TY  - JOUR
AU  - Stanković Petrović, Jelena
AU  - Danilović, Nataša
AU  - Kržanović, Nikola
AU  - Topalović, Dušan
AU  - Živanović, Miloš
AU  - Božović, Predrag
AU  - Todorović, Nataša
AU  - Nikolov, Jovana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11642
AB  - Individual monitoring service at the Department for Radiation and Environmental Protection of Vinca Institute of
Nuclear Sciences performs individual whole-body and extremities monitoring of exposed workers, using thermoluminescent dosimetry (TLD) method. The dosemeters for eye-lens personal dose equivalent measurements,
Hp(3), are not regularly used at the workplaces in Serbia, even though the individual monitoring method is
accredited and available at the dosimetry service. Type testing of Hp(3) dosemeters based on LiF: Mg,Ti, placed in
modified ring holders was done following the changes in ISO 4037:2019 and IEC 62387:2020. The type testing
was done by varying radiation-based influence quantities: photon energies ranging from 33.3 keV up to 1.25
MeV, angle of incidence values of 0◦, 45◦, 60◦, 75◦, dose range from 0.05 mSv to 10 Sv. The results show that the
passive dosimetry monitoring system satisfies IEC 62387:2020 requirements in the mandatory range of influence
quantities, except for the lowest tested energy of 33 keV, when incident radiation angle is ±60◦ and higher.
T2  - Radiation Measurements
T1  - Type-testing of the TLD system used for the assessing the eye lens doses due to ionising radiation
VL  - 168
SP  - 107014
DO  - 10.1016/j.radmeas.2023.107014
ER  - 

@article{
author = "Stanković Petrović, Jelena and Danilović, Nataša and Kržanović, Nikola and Topalović, Dušan and Živanović, Miloš and Božović, Predrag and Todorović, Nataša and Nikolov, Jovana",
year = "2023",
abstract = "Individual monitoring service at the Department for Radiation and Environmental Protection of Vinca Institute of
Nuclear Sciences performs individual whole-body and extremities monitoring of exposed workers, using thermoluminescent dosimetry (TLD) method. The dosemeters for eye-lens personal dose equivalent measurements,
Hp(3), are not regularly used at the workplaces in Serbia, even though the individual monitoring method is
accredited and available at the dosimetry service. Type testing of Hp(3) dosemeters based on LiF: Mg,Ti, placed in
modified ring holders was done following the changes in ISO 4037:2019 and IEC 62387:2020. The type testing
was done by varying radiation-based influence quantities: photon energies ranging from 33.3 keV up to 1.25
MeV, angle of incidence values of 0◦, 45◦, 60◦, 75◦, dose range from 0.05 mSv to 10 Sv. The results show that the
passive dosimetry monitoring system satisfies IEC 62387:2020 requirements in the mandatory range of influence
quantities, except for the lowest tested energy of 33 keV, when incident radiation angle is ±60◦ and higher.",
journal = "Radiation Measurements",
title = "Type-testing of the TLD system used for the assessing the eye lens doses due to ionising radiation",
volume = "168",
pages = "107014",
doi = "10.1016/j.radmeas.2023.107014"
}

Stanković Petrović, J., Danilović, N., Kržanović, N., Topalović, D., Živanović, M., Božović, P., Todorović, N.,& Nikolov, J.. (2023). Type-testing of the TLD system used for the assessing the eye lens doses due to ionising radiation. in Radiation Measurements, 168, 107014.
https://doi.org/10.1016/j.radmeas.2023.107014

Stanković Petrović J, Danilović N, Kržanović N, Topalović D, Živanović M, Božović P, Todorović N, Nikolov J. Type-testing of the TLD system used for the assessing the eye lens doses due to ionising radiation. in Radiation Measurements. 2023;168:107014.
doi:10.1016/j.radmeas.2023.107014 .

Stanković Petrović, Jelena, Danilović, Nataša, Kržanović, Nikola, Topalović, Dušan, Živanović, Miloš, Božović, Predrag, Todorović, Nataša, Nikolov, Jovana, "Type-testing of the TLD system used for the assessing the eye lens doses due to ionising radiation" in Radiation Measurements, 168 (2023):107014,
https://doi.org/10.1016/j.radmeas.2023.107014 . .

TY  - CONF
AU  - Topalović, Dušan
AU  - Krajinović, Marko
AU  - Vlahović, Jelena
AU  - Kržanović, Nikola
AU  - Božović, Predrag
AU  - Stanković Petrović, Jelena
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11913
AB  - Thermoluminescent dosimetry is a widely used passive dosimetry method for estimating protection quantities i.e. the effective or equivalent dose. When the thermoluminescent dosemeters (TLD) are irradiated, they store the dose information through the processes of ionisation and subsequent trapping of charge carriers. The charge carriers in TLD crystalline material move from the ground state to the higher energy states (trapping centres) that are partially stable at room temperature. By heating the material, charge carriers leave the metastable energy states and recombine at recombination centres, emitting light (glow). The heating procedure gives rise to a glow curve (GC) – the light intensity as a function of temperature and time. By calibrating the TLD reader, the area under the GC is converted to a dose value (e.g., personal dose equivalent, Hp(10)). The shape of the GC depends on the time-temperature profile (TTP) defined for each TLD material separately and may be regular or possess some anomalies. Inspecting the GC shape, as one of quality control measures, is usually conducted qualitatively and performed by trained TLD service staff. Hence, this paper presents the implementation of the machine learning Time Series Forest (TSF) method for the classification of anomalous GCs of LiF:Mg,Ti based TLD. TSF is a tree – ensemble method that combines entropy gain and distance measure for evaluating splits. This method shows significant computational efficiency compared to the well – known one – nearest – neighbour classifier. The dataset used for the TSF method consists of 201 normalized GCs exported by the software supplied with Harshaw 6600 Plus Automated Reader – WinREMS. The dataset is labelled into five different classes: (1) regular shape, (2) spikes at random positions, (3) TLD signal in the low – temperature region, (4) TLD signal in the high – temperature region, and (5) shift of the entire GC to higher temperatures. A random split of the dataset into training and testing in a 70/30 training/test ratio was performed, while the 10 – fold cross – validation was used for the hyperparameter tuning. The results showed that the TSF method can classify four different anomalies for GC with an accuracy of 96% and a macro average F1 score of 96%. According to the obtained results, it is possible to conclude that the TSF is a promising candidate method that could be implemented as a new software package for automated GC quality control within the TLD service
PB  - Niš : Sievert Association
C3  - RAP 2023 : International conference on radiation applications in Physics, Chemistry, Biology, Medical Sciences, Engineering and Environmental Sciences; Book of abstracts
T1  - A Time Series Forest Method for automatic classification of anomalous glow curves of LiF:Mg,Ti based thermoluminescent dosemeters
SP  - 31
EP  - 31
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11913
ER  - 

@conference{
author = "Topalović, Dušan and Krajinović, Marko and Vlahović, Jelena and Kržanović, Nikola and Božović, Predrag and Stanković Petrović, Jelena",
year = "2023",
abstract = "Thermoluminescent dosimetry is a widely used passive dosimetry method for estimating protection quantities i.e. the effective or equivalent dose. When the thermoluminescent dosemeters (TLD) are irradiated, they store the dose information through the processes of ionisation and subsequent trapping of charge carriers. The charge carriers in TLD crystalline material move from the ground state to the higher energy states (trapping centres) that are partially stable at room temperature. By heating the material, charge carriers leave the metastable energy states and recombine at recombination centres, emitting light (glow). The heating procedure gives rise to a glow curve (GC) – the light intensity as a function of temperature and time. By calibrating the TLD reader, the area under the GC is converted to a dose value (e.g., personal dose equivalent, Hp(10)). The shape of the GC depends on the time-temperature profile (TTP) defined for each TLD material separately and may be regular or possess some anomalies. Inspecting the GC shape, as one of quality control measures, is usually conducted qualitatively and performed by trained TLD service staff. Hence, this paper presents the implementation of the machine learning Time Series Forest (TSF) method for the classification of anomalous GCs of LiF:Mg,Ti based TLD. TSF is a tree – ensemble method that combines entropy gain and distance measure for evaluating splits. This method shows significant computational efficiency compared to the well – known one – nearest – neighbour classifier. The dataset used for the TSF method consists of 201 normalized GCs exported by the software supplied with Harshaw 6600 Plus Automated Reader – WinREMS. The dataset is labelled into five different classes: (1) regular shape, (2) spikes at random positions, (3) TLD signal in the low – temperature region, (4) TLD signal in the high – temperature region, and (5) shift of the entire GC to higher temperatures. A random split of the dataset into training and testing in a 70/30 training/test ratio was performed, while the 10 – fold cross – validation was used for the hyperparameter tuning. The results showed that the TSF method can classify four different anomalies for GC with an accuracy of 96% and a macro average F1 score of 96%. According to the obtained results, it is possible to conclude that the TSF is a promising candidate method that could be implemented as a new software package for automated GC quality control within the TLD service",
publisher = "Niš : Sievert Association",
journal = "RAP 2023 : International conference on radiation applications in Physics, Chemistry, Biology, Medical Sciences, Engineering and Environmental Sciences; Book of abstracts",
title = "A Time Series Forest Method for automatic classification of anomalous glow curves of LiF:Mg,Ti based thermoluminescent dosemeters",
pages = "31-31",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11913"
}

Topalović, D., Krajinović, M., Vlahović, J., Kržanović, N., Božović, P.,& Stanković Petrović, J.. (2023). A Time Series Forest Method for automatic classification of anomalous glow curves of LiF:Mg,Ti based thermoluminescent dosemeters. in RAP 2023 : International conference on radiation applications in Physics, Chemistry, Biology, Medical Sciences, Engineering and Environmental Sciences; Book of abstracts
Niš : Sievert Association., 31-31.
https://hdl.handle.net/21.15107/rcub_vinar_11913

Topalović D, Krajinović M, Vlahović J, Kržanović N, Božović P, Stanković Petrović J. A Time Series Forest Method for automatic classification of anomalous glow curves of LiF:Mg,Ti based thermoluminescent dosemeters. in RAP 2023 : International conference on radiation applications in Physics, Chemistry, Biology, Medical Sciences, Engineering and Environmental Sciences; Book of abstracts. 2023;:31-31.
https://hdl.handle.net/21.15107/rcub_vinar_11913 .

Topalović, Dušan, Krajinović, Marko, Vlahović, Jelena, Kržanović, Nikola, Božović, Predrag, Stanković Petrović, Jelena, "A Time Series Forest Method for automatic classification of anomalous glow curves of LiF:Mg,Ti based thermoluminescent dosemeters" in RAP 2023 : International conference on radiation applications in Physics, Chemistry, Biology, Medical Sciences, Engineering and Environmental Sciences; Book of abstracts (2023):31-31,
https://hdl.handle.net/21.15107/rcub_vinar_11913 .

TY  - JOUR
AU  - Kržanović, Nikola
AU  - Stanković-Petrović, Jelena S.
AU  - Živanović, Miloš
AU  - Krajinović, Marko
AU  - Božović, Predrag
AU  - Kojić, Andrea
AU  - Topalović, Dušan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11433
AB  - A need for detailed testing of individual monitoring systems used in accredited service at the Vinca Institute of Nuclear Sciences was recognized following changes in individual, workplace, and environmental monitoring passive dosimetry systems acceptability criteria stated in IEC 62387:2020 and changes related to reference fields used in radiation protection defined in ISO 4037:2019. Reliability and accuracy of dosimetry data acquired by passive dosimetry systems used for individual monitoring is assured by carrying out type tests. In this manner, the effects of different radiation influence quantities are examined. Passive dosimetry systems comprised of an LiF:Mg,Ti (TLD-100) detector card placed in two different holder models (8814 and 8850) and the Harshaw TLD Model 6600 Plus Automated Reader were tested. Type tests were done in an extended range of photon energies from 40 keV up to 1.25 MeV, angle of incidence values of ±45° and ± 60° for both vertical and horizontal dosimeter orientation, and in the dose range from 0.05 mSv to 1 Sv. Both dosimetry system configurations perform in line with IEC 62387:2020 within mandatory range for tested influence quantities. Dosimeters that use the 8850 holder type showed less pronounced energy and angular dependence of the response in the low-energy range.
T2  - Health Physics
T1  - Characterization of Thermoluminescent Dosimetry Systems According to the IEC 62387:2020 Standard
VL  - 125
IS  - 3
SP  - 186
EP  - 197
DO  - 10.1097/HP.0000000000001711
ER  - 

@article{
author = "Kržanović, Nikola and Stanković-Petrović, Jelena S. and Živanović, Miloš and Krajinović, Marko and Božović, Predrag and Kojić, Andrea and Topalović, Dušan",
year = "2023",
abstract = "A need for detailed testing of individual monitoring systems used in accredited service at the Vinca Institute of Nuclear Sciences was recognized following changes in individual, workplace, and environmental monitoring passive dosimetry systems acceptability criteria stated in IEC 62387:2020 and changes related to reference fields used in radiation protection defined in ISO 4037:2019. Reliability and accuracy of dosimetry data acquired by passive dosimetry systems used for individual monitoring is assured by carrying out type tests. In this manner, the effects of different radiation influence quantities are examined. Passive dosimetry systems comprised of an LiF:Mg,Ti (TLD-100) detector card placed in two different holder models (8814 and 8850) and the Harshaw TLD Model 6600 Plus Automated Reader were tested. Type tests were done in an extended range of photon energies from 40 keV up to 1.25 MeV, angle of incidence values of ±45° and ± 60° for both vertical and horizontal dosimeter orientation, and in the dose range from 0.05 mSv to 1 Sv. Both dosimetry system configurations perform in line with IEC 62387:2020 within mandatory range for tested influence quantities. Dosimeters that use the 8850 holder type showed less pronounced energy and angular dependence of the response in the low-energy range.",
journal = "Health Physics",
title = "Characterization of Thermoluminescent Dosimetry Systems According to the IEC 62387:2020 Standard",
volume = "125",
number = "3",
pages = "186-197",
doi = "10.1097/HP.0000000000001711"
}

Kržanović, N., Stanković-Petrović, J. S., Živanović, M., Krajinović, M., Božović, P., Kojić, A.,& Topalović, D.. (2023). Characterization of Thermoluminescent Dosimetry Systems According to the IEC 62387:2020 Standard. in Health Physics, 125(3), 186-197.
https://doi.org/10.1097/HP.0000000000001711

Kržanović N, Stanković-Petrović JS, Živanović M, Krajinović M, Božović P, Kojić A, Topalović D. Characterization of Thermoluminescent Dosimetry Systems According to the IEC 62387:2020 Standard. in Health Physics. 2023;125(3):186-197.
doi:10.1097/HP.0000000000001711 .

Kržanović, Nikola, Stanković-Petrović, Jelena S., Živanović, Miloš, Krajinović, Marko, Božović, Predrag, Kojić, Andrea, Topalović, Dušan, "Characterization of Thermoluminescent Dosimetry Systems According to the IEC 62387:2020 Standard" in Health Physics, 125, no. 3 (2023):186-197,
https://doi.org/10.1097/HP.0000000000001711 . .

TY  - CONF
AU  - Stanković-Petrović, Jelena S.
AU  - Kržanović, Nikola
AU  - Živanović, Miloš
AU  - Topalović, Dušan
AU  - Kojić, Andrea
AU  - Božović, Predrag
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11118
AB  - The regular participation of an accredited individual monitoring service (IMS) in the international and/or interlaboratory intercomparisons (IC) is required according to ISO/IEC 17025:2017 standard, General requirements for the competence of testing and calibration laboratories. By taking the part in an IC, IMS shows competence, reliability, and has an opportunity to learn further and improve its measurement method. The European Dosimetry Group (EURADOS) Working Group 2 (WG2) has acknowledged the value of the regular IC and also found that data and results from it are fundamental for the harmonization of the measurement process [1]. Thus, EURADOS started a self-sustained program of IC for IMS for external radiation on a biannual basis. The results of an accredited IMS at the Department of Radiation and Environmental Protection, “VINČA” Institute of Nuclear Sciences, Belgrade, Serbia (IMS VINS) in the EURADOS IC for the period 2010-2020 (excluding 2014) are presented. IMS VINS use thermoluminescent whole body dosemeters based on two TLD-100TM (Thermo Scientific™ Harshaw™, USA) detectors. The readouts are done on the Harshaw TLD™ Model 6600 Plus Automated Reader (Thermo Fisher Scientific, USA). The whole glow curve is used for dose estimation (all of 200 channels). The calibration of the dosimetric system is done twice a year in S-Cs (previously in S-Co) field at the secondary standard dosimetry laboratory (SSDL VINS), according to ISO 4037-3:2019. The IC had 40 different reference values of personal dose equivalent, Hp(10) in noted period ranging from 0.431 mSv to 501 mSv. There were 20, 16, 22, 22, 20 dosemeters irradiated in year 2010, 2012, 2016, 2018, 2020, respectively. The radiations were done in 12 different fields: N-60, S-Co, S-Cs, N-40, N-150, S-Cs+Sr90, S-Cs+N-40, W-110, S-Cs+W-250, W-60, S-Cs+W-80, and S-Cs+N-150. The relative response (R) range is from 0.23 to 2.26. Quantile values for R are: 0.23, 0.79, 0.90, 1.1, and 2.26, respectively for (0%, 25 %, 50 %, 75 % and 100 % of points). Mean and standard deviation of R are 0.97 and 0.30, respectively. The performance limits are established according to ISO 14146 trumpet-curve [1]. Due to trumpet-curve there were 6 outliers (2 in 2010, 4 in 2016). All of the outliers were for reference dose around 1 mSv and lower. One outlier from 2010 was irradiated in N-40 field and 30° of incident angle. The other outlier was irradiated in the S-Cs field, without any rotation, and thus should have had a satisfying response. The possible explanation is an insensitive TL detector. The outliers in 2016 were all for N-40 quality and ±60° angle. Thus, considering the low number of outliers (only one true outlier) and expected dosemeters faulty response for given irradiation parameters, we conclude that the IMS VINS dosimetry system had satisfactory behavior during IC from 2010-2020.
PB  - RAD Centre, Niš, Serbia
C3  - RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro
T1  - Results of IMS participation in international intercomparisons for whole body dosemeters – 10 years of study
SP  - 129
DO  - 10.21175/rad.spr.abstr.book.2022.28.3
ER  - 

@conference{
author = "Stanković-Petrović, Jelena S. and Kržanović, Nikola and Živanović, Miloš and Topalović, Dušan and Kojić, Andrea and Božović, Predrag",
year = "2022",
abstract = "The regular participation of an accredited individual monitoring service (IMS) in the international and/or interlaboratory intercomparisons (IC) is required according to ISO/IEC 17025:2017 standard, General requirements for the competence of testing and calibration laboratories. By taking the part in an IC, IMS shows competence, reliability, and has an opportunity to learn further and improve its measurement method. The European Dosimetry Group (EURADOS) Working Group 2 (WG2) has acknowledged the value of the regular IC and also found that data and results from it are fundamental for the harmonization of the measurement process [1]. Thus, EURADOS started a self-sustained program of IC for IMS for external radiation on a biannual basis. The results of an accredited IMS at the Department of Radiation and Environmental Protection, “VINČA” Institute of Nuclear Sciences, Belgrade, Serbia (IMS VINS) in the EURADOS IC for the period 2010-2020 (excluding 2014) are presented. IMS VINS use thermoluminescent whole body dosemeters based on two TLD-100TM (Thermo Scientific™ Harshaw™, USA) detectors. The readouts are done on the Harshaw TLD™ Model 6600 Plus Automated Reader (Thermo Fisher Scientific, USA). The whole glow curve is used for dose estimation (all of 200 channels). The calibration of the dosimetric system is done twice a year in S-Cs (previously in S-Co) field at the secondary standard dosimetry laboratory (SSDL VINS), according to ISO 4037-3:2019. The IC had 40 different reference values of personal dose equivalent, Hp(10) in noted period ranging from 0.431 mSv to 501 mSv. There were 20, 16, 22, 22, 20 dosemeters irradiated in year 2010, 2012, 2016, 2018, 2020, respectively. The radiations were done in 12 different fields: N-60, S-Co, S-Cs, N-40, N-150, S-Cs+Sr90, S-Cs+N-40, W-110, S-Cs+W-250, W-60, S-Cs+W-80, and S-Cs+N-150. The relative response (R) range is from 0.23 to 2.26. Quantile values for R are: 0.23, 0.79, 0.90, 1.1, and 2.26, respectively for (0%, 25 %, 50 %, 75 % and 100 % of points). Mean and standard deviation of R are 0.97 and 0.30, respectively. The performance limits are established according to ISO 14146 trumpet-curve [1]. Due to trumpet-curve there were 6 outliers (2 in 2010, 4 in 2016). All of the outliers were for reference dose around 1 mSv and lower. One outlier from 2010 was irradiated in N-40 field and 30° of incident angle. The other outlier was irradiated in the S-Cs field, without any rotation, and thus should have had a satisfying response. The possible explanation is an insensitive TL detector. The outliers in 2016 were all for N-40 quality and ±60° angle. Thus, considering the low number of outliers (only one true outlier) and expected dosemeters faulty response for given irradiation parameters, we conclude that the IMS VINS dosimetry system had satisfactory behavior during IC from 2010-2020.",
publisher = "RAD Centre, Niš, Serbia",
journal = "RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro",
title = "Results of IMS participation in international intercomparisons for whole body dosemeters – 10 years of study",
pages = "129",
doi = "10.21175/rad.spr.abstr.book.2022.28.3"
}

Stanković-Petrović, J. S., Kržanović, N., Živanović, M., Topalović, D., Kojić, A.,& Božović, P.. (2022). Results of IMS participation in international intercomparisons for whole body dosemeters – 10 years of study. in RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro
RAD Centre, Niš, Serbia., 129.
https://doi.org/10.21175/rad.spr.abstr.book.2022.28.3

Stanković-Petrović JS, Kržanović N, Živanović M, Topalović D, Kojić A, Božović P. Results of IMS participation in international intercomparisons for whole body dosemeters – 10 years of study. in RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro. 2022;:129.
doi:10.21175/rad.spr.abstr.book.2022.28.3 .

Stanković-Petrović, Jelena S., Kržanović, Nikola, Živanović, Miloš, Topalović, Dušan, Kojić, Andrea, Božović, Predrag, "Results of IMS participation in international intercomparisons for whole body dosemeters – 10 years of study" in RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro (2022):129,
https://doi.org/10.21175/rad.spr.abstr.book.2022.28.3 . .

TY  - CONF
AU  - Božović, Predrag
AU  - Kržanović, Nikola
AU  - Živanović, Miloš
AU  - Kojić, Andrea
AU  - Siiskonen, Teemu
AU  - Blideanu, Valentin
AU  - Reetta, Nylund
AU  - Schettino, Giuseppe
AU  - Toroi, Paula
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11115
AB  - Due to constant development in radiodiagnostic and radiotherapy procedures with increasing complexity, a need for high-level coordination of the ionizing radiation metrology community was recognized to better respond to the needs of end users. In order to facilitate knowledge dissemination and improve communication between stakeholders involved in medical applications of ionizing radiation, a Joint Network Project was started in 2020. One of the specific objectives of Work Package 2 of the project 19NET04 MIRA, “Support for a European Metrology Network on the medical use of ionizing radiation” is to support the developing states, ensuring that the planned EMN is inclusive through improvements in the medical use of ionizing radiation [1]. Czech Republic, Romania and Serbia were defined as countries of interest to conduct the survey and collect relevant data from stakeholders in the category of medical staff and professionals, so that the potential for improvement for medical applications of ionizing radiation can be evaluated. For the purpose of data collection, an online questionnaire was prepared and distributed to the stakeholders. The questionnaire was structured in such a way to allow easier collection of information regarding availability of (1) calibration services; (2) documented technical protocols; (3) standard documentation in the establishments for different ionizing radiation applications. Implementation of a Quality assurance (QA) programme was investigated, as well as the consistency in realization of proficiency testing (PT) or audits. The stakeholders were asked if additional workshops or training programmes are needed in their area of expertise. The radiodiagnostic modalities included in the questionnaire were the general radiography, mammography, computed tomography and interventional procedures, while radiotherapy modalities included external beam radiotherapy (teletherapy) and brachytherapy. Although nuclear medicine (therapy and diagnostic) procedures were part of the questionnaire, none of the respondents have capabilities for these applications. Based on the information collected via the online questionnaire, calibration services are available for most of the modalities, except for brachytherapy where traceability is not established. QA and PT are regularly performed in radiotherapy, while it is not the case in radiodiagnostic modalities. Improvement in knowledge transfer is needed for all of the applications investigated. Considering the acquired information, there is a clear need for EMN to support knowledge transfer, communication and technical exchange between the metrology community and the stakeholders involved in the medical applications of ionizing radiation. The forthcoming European Metrology Network will further elaborate the knowledge dissemination and stakeholder dialogue through its stakeholder panels and joint training efforts
PB  - RAD Centre, Niš, Serbia
C3  - RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro
T1  - Investigation on the potential of improvement in the field of medical applications of ionizing radiation via the future European Metrology Network
SP  - 78
DO  - 10.21175/rad.spr.abstr.book.2022.19.4
ER  - 

@conference{
author = "Božović, Predrag and Kržanović, Nikola and Živanović, Miloš and Kojić, Andrea and Siiskonen, Teemu and Blideanu, Valentin and Reetta, Nylund and Schettino, Giuseppe and Toroi, Paula",
year = "2022",
abstract = "Due to constant development in radiodiagnostic and radiotherapy procedures with increasing complexity, a need for high-level coordination of the ionizing radiation metrology community was recognized to better respond to the needs of end users. In order to facilitate knowledge dissemination and improve communication between stakeholders involved in medical applications of ionizing radiation, a Joint Network Project was started in 2020. One of the specific objectives of Work Package 2 of the project 19NET04 MIRA, “Support for a European Metrology Network on the medical use of ionizing radiation” is to support the developing states, ensuring that the planned EMN is inclusive through improvements in the medical use of ionizing radiation [1]. Czech Republic, Romania and Serbia were defined as countries of interest to conduct the survey and collect relevant data from stakeholders in the category of medical staff and professionals, so that the potential for improvement for medical applications of ionizing radiation can be evaluated. For the purpose of data collection, an online questionnaire was prepared and distributed to the stakeholders. The questionnaire was structured in such a way to allow easier collection of information regarding availability of (1) calibration services; (2) documented technical protocols; (3) standard documentation in the establishments for different ionizing radiation applications. Implementation of a Quality assurance (QA) programme was investigated, as well as the consistency in realization of proficiency testing (PT) or audits. The stakeholders were asked if additional workshops or training programmes are needed in their area of expertise. The radiodiagnostic modalities included in the questionnaire were the general radiography, mammography, computed tomography and interventional procedures, while radiotherapy modalities included external beam radiotherapy (teletherapy) and brachytherapy. Although nuclear medicine (therapy and diagnostic) procedures were part of the questionnaire, none of the respondents have capabilities for these applications. Based on the information collected via the online questionnaire, calibration services are available for most of the modalities, except for brachytherapy where traceability is not established. QA and PT are regularly performed in radiotherapy, while it is not the case in radiodiagnostic modalities. Improvement in knowledge transfer is needed for all of the applications investigated. Considering the acquired information, there is a clear need for EMN to support knowledge transfer, communication and technical exchange between the metrology community and the stakeholders involved in the medical applications of ionizing radiation. The forthcoming European Metrology Network will further elaborate the knowledge dissemination and stakeholder dialogue through its stakeholder panels and joint training efforts",
publisher = "RAD Centre, Niš, Serbia",
journal = "RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro",
title = "Investigation on the potential of improvement in the field of medical applications of ionizing radiation via the future European Metrology Network",
pages = "78",
doi = "10.21175/rad.spr.abstr.book.2022.19.4"
}

Božović, P., Kržanović, N., Živanović, M., Kojić, A., Siiskonen, T., Blideanu, V., Reetta, N., Schettino, G.,& Toroi, P.. (2022). Investigation on the potential of improvement in the field of medical applications of ionizing radiation via the future European Metrology Network. in RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro
RAD Centre, Niš, Serbia., 78.
https://doi.org/10.21175/rad.spr.abstr.book.2022.19.4

Božović P, Kržanović N, Živanović M, Kojić A, Siiskonen T, Blideanu V, Reetta N, Schettino G, Toroi P. Investigation on the potential of improvement in the field of medical applications of ionizing radiation via the future European Metrology Network. in RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro. 2022;:78.
doi:10.21175/rad.spr.abstr.book.2022.19.4 .

Božović, Predrag, Kržanović, Nikola, Živanović, Miloš, Kojić, Andrea, Siiskonen, Teemu, Blideanu, Valentin, Reetta, Nylund, Schettino, Giuseppe, Toroi, Paula, "Investigation on the potential of improvement in the field of medical applications of ionizing radiation via the future European Metrology Network" in RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro (2022):78,
https://doi.org/10.21175/rad.spr.abstr.book.2022.19.4 . .

TY  - CONF
AU  - Kržanović, Nikola
AU  - Božović, Predrag
AU  - Živanović, Miloš
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11119
AB  - In mammography clinical practice, various radiation fields are used, produced using different X-ray tube anode and filtration setups. It is important to calibrate diagnostic dosimeters in different radiation qualities as these dosimeters are used for quality control tests and most dosimeters have significant dependence of response on radiation spectra. TRS 457 Code of Practice [1] is an IAEA document which recommends calibration of diagnostic dosimeters in reference radiation fields established according to IEC 61267:2005 international standard [2], which considers the Mo/Mo anode-filter combination (abbreviated as the RQR-M series). Other, non-standard beam qualities are also used for calibration, such as the beams with W/Al anode-filter combination, used by Vinca Institute Secondary Standard Dosimetry Laboratory. Traceability is established to IAEA Dosimetry Laboratory, and radiation qualities are established by adding 0.5 mm Al additional filtration, following the IAEA procedure [3]. Mammography radiation qualities can be validated by determining the half-value layer (HVL) of the radiation beam. To determine HVL we measured incident air kerma at 1 m distance using a 1 cm3 plane parallel ionization chamber, by successively adding Al attenuators of different thickness. The Al attenuators have been placed at 0.5 m distance, equidistantly from the radiation source and the ionization chamber. HVL was obtained using a linear regression for the additional filtration values near the expected HVL value. Calculated HVL was 0.326 mm Al, 0.367 mm Al, 0.395 mm Al, 0.456 mm Al for tube voltages 25 kV, 28 kV, 30 kV and 35 kV, respectively. The results were compared with the values given by IAEA SSDL [3] (deviation for all qualities was less than 5%) and PTB Primary Standard Dosimetry Laboratory (PSDL) [4]. Radiation qualities established in this manner allow proper calibration and traceability of diagnostic dosimeters in W/Al radiation qualities to be used for routine QC tests in mammography.
PB  - RAD Centre, Niš, Serbia
C3  - RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro
T1  - Establishing W/Al mammography radiation qualities in Secondary Standard Dosimetry Laboratory
SP  - 142
DO  - 10.21175/rad.spr.abstr.book.2022.28.16
ER  - 

@conference{
author = "Kržanović, Nikola and Božović, Predrag and Živanović, Miloš",
year = "2022",
abstract = "In mammography clinical practice, various radiation fields are used, produced using different X-ray tube anode and filtration setups. It is important to calibrate diagnostic dosimeters in different radiation qualities as these dosimeters are used for quality control tests and most dosimeters have significant dependence of response on radiation spectra. TRS 457 Code of Practice [1] is an IAEA document which recommends calibration of diagnostic dosimeters in reference radiation fields established according to IEC 61267:2005 international standard [2], which considers the Mo/Mo anode-filter combination (abbreviated as the RQR-M series). Other, non-standard beam qualities are also used for calibration, such as the beams with W/Al anode-filter combination, used by Vinca Institute Secondary Standard Dosimetry Laboratory. Traceability is established to IAEA Dosimetry Laboratory, and radiation qualities are established by adding 0.5 mm Al additional filtration, following the IAEA procedure [3]. Mammography radiation qualities can be validated by determining the half-value layer (HVL) of the radiation beam. To determine HVL we measured incident air kerma at 1 m distance using a 1 cm3 plane parallel ionization chamber, by successively adding Al attenuators of different thickness. The Al attenuators have been placed at 0.5 m distance, equidistantly from the radiation source and the ionization chamber. HVL was obtained using a linear regression for the additional filtration values near the expected HVL value. Calculated HVL was 0.326 mm Al, 0.367 mm Al, 0.395 mm Al, 0.456 mm Al for tube voltages 25 kV, 28 kV, 30 kV and 35 kV, respectively. The results were compared with the values given by IAEA SSDL [3] (deviation for all qualities was less than 5%) and PTB Primary Standard Dosimetry Laboratory (PSDL) [4]. Radiation qualities established in this manner allow proper calibration and traceability of diagnostic dosimeters in W/Al radiation qualities to be used for routine QC tests in mammography.",
publisher = "RAD Centre, Niš, Serbia",
journal = "RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro",
title = "Establishing W/Al mammography radiation qualities in Secondary Standard Dosimetry Laboratory",
pages = "142",
doi = "10.21175/rad.spr.abstr.book.2022.28.16"
}

Kržanović, N., Božović, P.,& Živanović, M.. (2022). Establishing W/Al mammography radiation qualities in Secondary Standard Dosimetry Laboratory. in RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro
RAD Centre, Niš, Serbia., 142.
https://doi.org/10.21175/rad.spr.abstr.book.2022.28.16

Kržanović N, Božović P, Živanović M. Establishing W/Al mammography radiation qualities in Secondary Standard Dosimetry Laboratory. in RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro. 2022;:142.
doi:10.21175/rad.spr.abstr.book.2022.28.16 .

Kržanović, Nikola, Božović, Predrag, Živanović, Miloš, "Establishing W/Al mammography radiation qualities in Secondary Standard Dosimetry Laboratory" in RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro (2022):142,
https://doi.org/10.21175/rad.spr.abstr.book.2022.28.16 . .

TY  - CONF
AU  - Molnar, Una
AU  - Hornjak, Dejana
AU  - Nikolov, Jovana
AU  - Božović, Predrag
AU  - Todorović, Nataša
AU  - Stojanović, Sanja
AU  - Till, Viktor
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11114
AB  - Quality control (QC) guidelines published by the IAEA, American College of Radiology, European Commission, and other authorities have demonstrated that regular QC testing of radiographic facilities, involving daily or weekly tests, effectively contributes to patient radiation exposure reduction and improvement of image quality. Often lack of staff qualified to effectively perform and analyze testing results, and needed resources (phantoms, measuring equipment) leads to poor QC practice and detection in system performance deficiencies only after they become clinically significant. New IAEA publication offers a solution with simple, inexpensive test objects which, using the advantages of computer networking, can allow the collection of data in a harmonized manner. The creation of a centralized data system should ensure consistency, easier evaluation, and comparison between different systems. The aim of this study was to implement the newly proposed QC program and test the available radiographic equipment for short-term fluctuations of some critical components of the imaging chain to ensure consistent system performance, clinically adequate image quality, and increase patient safety. The measurement was performed at the University Clinical Center of Vojvodina on a “home-made” phantom. The consistency of acquisition technical parameters and image quality indicators, metrics, and artifacts were assessed by generating images of the test phantom. Test phantom was formed by a uniform attenuator plate made of 10 cm × 10 cm, 2 mm thick square sheet of copper, and target plate consisted of a 5mm thick polymethyl methacrylate (PMMA) carrier, and 4mm thick aluminum and 2mm thick copper inserts, as proposed by the IAEA. Generated images were analyzed using the ATIA software available for download for all Member States via the IAEA Human Health Campus. This paper presents preliminary results of the performed QC testing with the use of a “simple” phantom designed in accordance with the IAEA Human Health Series No.39 (2021).
PB  - RAD Centre, Niš, Serbia
C3  - RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro
T1  - Implementation of a new IAEA remote and automated quality control program for radiography equipment
SP  - 77
DO  - 10.21175/rad.spr.abstr.book.2022.0.1
ER  - 

@conference{
author = "Molnar, Una and Hornjak, Dejana and Nikolov, Jovana and Božović, Predrag and Todorović, Nataša and Stojanović, Sanja and Till, Viktor",
year = "2022",
abstract = "Quality control (QC) guidelines published by the IAEA, American College of Radiology, European Commission, and other authorities have demonstrated that regular QC testing of radiographic facilities, involving daily or weekly tests, effectively contributes to patient radiation exposure reduction and improvement of image quality. Often lack of staff qualified to effectively perform and analyze testing results, and needed resources (phantoms, measuring equipment) leads to poor QC practice and detection in system performance deficiencies only after they become clinically significant. New IAEA publication offers a solution with simple, inexpensive test objects which, using the advantages of computer networking, can allow the collection of data in a harmonized manner. The creation of a centralized data system should ensure consistency, easier evaluation, and comparison between different systems. The aim of this study was to implement the newly proposed QC program and test the available radiographic equipment for short-term fluctuations of some critical components of the imaging chain to ensure consistent system performance, clinically adequate image quality, and increase patient safety. The measurement was performed at the University Clinical Center of Vojvodina on a “home-made” phantom. The consistency of acquisition technical parameters and image quality indicators, metrics, and artifacts were assessed by generating images of the test phantom. Test phantom was formed by a uniform attenuator plate made of 10 cm × 10 cm, 2 mm thick square sheet of copper, and target plate consisted of a 5mm thick polymethyl methacrylate (PMMA) carrier, and 4mm thick aluminum and 2mm thick copper inserts, as proposed by the IAEA. Generated images were analyzed using the ATIA software available for download for all Member States via the IAEA Human Health Campus. This paper presents preliminary results of the performed QC testing with the use of a “simple” phantom designed in accordance with the IAEA Human Health Series No.39 (2021).",
publisher = "RAD Centre, Niš, Serbia",
journal = "RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro",
title = "Implementation of a new IAEA remote and automated quality control program for radiography equipment",
pages = "77",
doi = "10.21175/rad.spr.abstr.book.2022.0.1"
}

Molnar, U., Hornjak, D., Nikolov, J., Božović, P., Todorović, N., Stojanović, S.,& Till, V.. (2022). Implementation of a new IAEA remote and automated quality control program for radiography equipment. in RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro
RAD Centre, Niš, Serbia., 77.
https://doi.org/10.21175/rad.spr.abstr.book.2022.0.1

Molnar U, Hornjak D, Nikolov J, Božović P, Todorović N, Stojanović S, Till V. Implementation of a new IAEA remote and automated quality control program for radiography equipment. in RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro. 2022;:77.
doi:10.21175/rad.spr.abstr.book.2022.0.1 .

Molnar, Una, Hornjak, Dejana, Nikolov, Jovana, Božović, Predrag, Todorović, Nataša, Stojanović, Sanja, Till, Viktor, "Implementation of a new IAEA remote and automated quality control program for radiography equipment" in RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; June 13-17; Herceg Novi, Montenegro (2022):77,
https://doi.org/10.21175/rad.spr.abstr.book.2022.0.1 . .

TY  - CONF
AU  - Kojić, Andrea
AU  - Božović, Predrag
AU  - Kržanović, Nikola
AU  - Stanković-Petrović, Jelena S.
AU  - Živanović, Miloš Z.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10089
AB  - Primena jonizujućeg zračenja u medicini je neizbežan deo moderne medicinske dijagnostike. S obzirom na globalni porast izlaganja zračenju u medicinske svrhe raste i potreba za optimizacijom doza koje se isporučuju pacijentu. U dijagnostičkoj radiologiji doza koja se isporučuje pacijentu može se proceniti ulaznom dozom na površini kože (Entrance Surface Air Kerma) i jedan od metoda za dobijanje ESAK jeste proračun na osnovu vrednosti radijacionog izlaza. Radijacioni izlaz može se izmeriti ili dobiti proračunom pomoću matematičkih formula ili Monte Karlo simulacijama. U ovom radu izmeren je radijacioni izlaz za 15 različitih rendgen-aparata i izračunati su parametri u matematičkoj formuli kako bi se dobio precizniji model za radijacioni izlaz. Rezultati su upoređeni sa rezultatima Monte Karlo simulacija, kao i sa rezultatima dobijenim u sličnim studijama.
AB  - Application of ionizing radiation in medicine is an inseparable part of modern medical diagnostics. With increasing number of medical exposures in the world the need for optimization of doses delivered to patients arises. Doses delivered to the patient in diagnostic radiology can be estimated with Entrance Surface Air Kerma, where one of the methods for obtaining ESAK is the calculation based on radiation output. Furthermore, radiation output can be measured or calculated using mathematical formulas or Monte Carlo simulations. In this paper we measured radiation output for 15 different x-ray devices and calculated parameters for mathematical formula to obtain a more accurate model for radiation output. These results were compared with the results of Monte Carlo simulations and the results obtained in similar studies.
PB  - Institut za nuklearne nauke "Vinča"
PB  - Društvo za zaštitu od zračenja Srbije i Crne Gore
C3  - 31. симпозијум ДЗЗСЦГ : зборник радова
T1  - Procena vrednosti parametara matematičkog modela za radijacioni izlaz rendgen-aparata u dijagnostičkoj radiologiji
T1  - Optimization of Radiation Output Mathematical Model Parameters for X-Ray Devices Used in Diagnostic Radiology
SP  - 229
EP  - 234
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10089
ER  - 

@conference{
author = "Kojić, Andrea and Božović, Predrag and Kržanović, Nikola and Stanković-Petrović, Jelena S. and Živanović, Miloš Z.",
year = "2021",
abstract = "Primena jonizujućeg zračenja u medicini je neizbežan deo moderne medicinske dijagnostike. S obzirom na globalni porast izlaganja zračenju u medicinske svrhe raste i potreba za optimizacijom doza koje se isporučuju pacijentu. U dijagnostičkoj radiologiji doza koja se isporučuje pacijentu može se proceniti ulaznom dozom na površini kože (Entrance Surface Air Kerma) i jedan od metoda za dobijanje ESAK jeste proračun na osnovu vrednosti radijacionog izlaza. Radijacioni izlaz može se izmeriti ili dobiti proračunom pomoću matematičkih formula ili Monte Karlo simulacijama. U ovom radu izmeren je radijacioni izlaz za 15 različitih rendgen-aparata i izračunati su parametri u matematičkoj formuli kako bi se dobio precizniji model za radijacioni izlaz. Rezultati su upoređeni sa rezultatima Monte Karlo simulacija, kao i sa rezultatima dobijenim u sličnim studijama., Application of ionizing radiation in medicine is an inseparable part of modern medical diagnostics. With increasing number of medical exposures in the world the need for optimization of doses delivered to patients arises. Doses delivered to the patient in diagnostic radiology can be estimated with Entrance Surface Air Kerma, where one of the methods for obtaining ESAK is the calculation based on radiation output. Furthermore, radiation output can be measured or calculated using mathematical formulas or Monte Carlo simulations. In this paper we measured radiation output for 15 different x-ray devices and calculated parameters for mathematical formula to obtain a more accurate model for radiation output. These results were compared with the results of Monte Carlo simulations and the results obtained in similar studies.",
publisher = "Institut za nuklearne nauke "Vinča", Društvo za zaštitu od zračenja Srbije i Crne Gore",
journal = "31. симпозијум ДЗЗСЦГ : зборник радова",
title = "Procena vrednosti parametara matematičkog modela za radijacioni izlaz rendgen-aparata u dijagnostičkoj radiologiji, Optimization of Radiation Output Mathematical Model Parameters for X-Ray Devices Used in Diagnostic Radiology",
pages = "229-234",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10089"
}

Kojić, A., Božović, P., Kržanović, N., Stanković-Petrović, J. S.,& Živanović, M. Z.. (2021). Procena vrednosti parametara matematičkog modela za radijacioni izlaz rendgen-aparata u dijagnostičkoj radiologiji. in 31. симпозијум ДЗЗСЦГ : зборник радова
Institut za nuklearne nauke "Vinča"., 229-234.
https://hdl.handle.net/21.15107/rcub_vinar_10089

Kojić A, Božović P, Kržanović N, Stanković-Petrović JS, Živanović MZ. Procena vrednosti parametara matematičkog modela za radijacioni izlaz rendgen-aparata u dijagnostičkoj radiologiji. in 31. симпозијум ДЗЗСЦГ : зборник радова. 2021;:229-234.
https://hdl.handle.net/21.15107/rcub_vinar_10089 .

Kojić, Andrea, Božović, Predrag, Kržanović, Nikola, Stanković-Petrović, Jelena S., Živanović, Miloš Z., "Procena vrednosti parametara matematičkog modela za radijacioni izlaz rendgen-aparata u dijagnostičkoj radiologiji" in 31. симпозијум ДЗЗСЦГ : зборник радова (2021):229-234,
https://hdl.handle.net/21.15107/rcub_vinar_10089 .

TY  - CONF
AU  - Jović, Mihajlo D.
AU  - Smičiklas, Ivana D.
AU  - Šipka, Nenad
AU  - Stojanović, Živojin
AU  - Božović, Predrag
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10120
AB  - Naftna industrija je jedan od najvećih proizvođača TENORM materijala u Srbiji, kao i u svetu. Usled značajnih promena temperature i pritiska, transport nafte i gasa iz geoloških rezervoara izaziva taloženje primordijalnih radionuklida i drugih materija unutar transportnih cevi do nivoa povećane radioaktivnosti, koja zahteva sprovođenje mera bezbednosti i zaštite od zračenja. Najveća aktivnost u depozitu-kamencu i mulju potiče od 226Ra, sa vremenom poluraspada od 1600 godina. U ovom radu razmatrane su prednosti i nedostaci postojećih hemijskih i fizičko/mehaničkih metoda dekontaminacije, u svetlu iskustava iz prakse. Unapređenje tehnologija za dekontaminaciju cevnih materijala sa povišenom radioaktivnošću i dalje predstavlja izazov, a glavni cilj je razvoj efikasnih, ekonomičnih i ekološki prihvatljivih rešenja, bez ili sa generisanjem što manje količine sekundarnog otpada. U tom smislu, razvoj i optimizacija metoda baziraih na primeni peleta suvog leda u kombinaciji sa komprimovanim vazduhom, zaslužuju posebnu pažnju.
AB  - The oil industry is one of the largest producers of TENORM materials in Serbia and on a global level. Due to significant changes in temperature and pressure, the transport of oil and gas from geological reservoirs causes the deposition of primordial radionuclides and other substances within the transport pipes to the level of increased radioactivity that requires the implementation of safety and radiation protection measures. The highest activity in scale and sludge deposits originates from 226Ra, with a half-life of 1600 years. This paper discusses the advantages and disadvantages of existing chemical and physical/mechanical decontamination methods in the light of practical experience. Improving technologies for decontamination of pipe materials with increased radioactivity remains a challenge, and the main goal is to develop efficient, economical, and environmentally friendly solutions without or with the generation of as little secondary waste as possible. In this sense, the development and optimization of methods based on the application of dry ice pellets in combination with compressed air deserve special attention.
PB  - Institut za nuklearne nauke "Vinča"
PB  - Društvo za zaštitu od zračenja Srbije i Crne Gore
C3  - 31. симпозијум ДЗЗСЦГ : зборник радова
T1  - Dekontaminacija cevnog materijala tehnološki obogaćenog primordijalnim radionuklidima
T1  - Decontamination of Pipe Material Technologically Enriched with Primordial Radionuclides
SP  - 262
EP  - 268
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10120
ER  - 

@conference{
author = "Jović, Mihajlo D. and Smičiklas, Ivana D. and Šipka, Nenad and Stojanović, Živojin and Božović, Predrag",
year = "2021",
abstract = "Naftna industrija je jedan od najvećih proizvođača TENORM materijala u Srbiji, kao i u svetu. Usled značajnih promena temperature i pritiska, transport nafte i gasa iz geoloških rezervoara izaziva taloženje primordijalnih radionuklida i drugih materija unutar transportnih cevi do nivoa povećane radioaktivnosti, koja zahteva sprovođenje mera bezbednosti i zaštite od zračenja. Najveća aktivnost u depozitu-kamencu i mulju potiče od 226Ra, sa vremenom poluraspada od 1600 godina. U ovom radu razmatrane su prednosti i nedostaci postojećih hemijskih i fizičko/mehaničkih metoda dekontaminacije, u svetlu iskustava iz prakse. Unapređenje tehnologija za dekontaminaciju cevnih materijala sa povišenom radioaktivnošću i dalje predstavlja izazov, a glavni cilj je razvoj efikasnih, ekonomičnih i ekološki prihvatljivih rešenja, bez ili sa generisanjem što manje količine sekundarnog otpada. U tom smislu, razvoj i optimizacija metoda baziraih na primeni peleta suvog leda u kombinaciji sa komprimovanim vazduhom, zaslužuju posebnu pažnju., The oil industry is one of the largest producers of TENORM materials in Serbia and on a global level. Due to significant changes in temperature and pressure, the transport of oil and gas from geological reservoirs causes the deposition of primordial radionuclides and other substances within the transport pipes to the level of increased radioactivity that requires the implementation of safety and radiation protection measures. The highest activity in scale and sludge deposits originates from 226Ra, with a half-life of 1600 years. This paper discusses the advantages and disadvantages of existing chemical and physical/mechanical decontamination methods in the light of practical experience. Improving technologies for decontamination of pipe materials with increased radioactivity remains a challenge, and the main goal is to develop efficient, economical, and environmentally friendly solutions without or with the generation of as little secondary waste as possible. In this sense, the development and optimization of methods based on the application of dry ice pellets in combination with compressed air deserve special attention.",
publisher = "Institut za nuklearne nauke "Vinča", Društvo za zaštitu od zračenja Srbije i Crne Gore",
journal = "31. симпозијум ДЗЗСЦГ : зборник радова",
title = "Dekontaminacija cevnog materijala tehnološki obogaćenog primordijalnim radionuklidima, Decontamination of Pipe Material Technologically Enriched with Primordial Radionuclides",
pages = "262-268",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10120"
}

Jović, M. D., Smičiklas, I. D., Šipka, N., Stojanović, Ž.,& Božović, P.. (2021). Dekontaminacija cevnog materijala tehnološki obogaćenog primordijalnim radionuklidima. in 31. симпозијум ДЗЗСЦГ : зборник радова
Institut za nuklearne nauke "Vinča"., 262-268.
https://hdl.handle.net/21.15107/rcub_vinar_10120

Jović MD, Smičiklas ID, Šipka N, Stojanović Ž, Božović P. Dekontaminacija cevnog materijala tehnološki obogaćenog primordijalnim radionuklidima. in 31. симпозијум ДЗЗСЦГ : зборник радова. 2021;:262-268.
https://hdl.handle.net/21.15107/rcub_vinar_10120 .

Jović, Mihajlo D., Smičiklas, Ivana D., Šipka, Nenad, Stojanović, Živojin, Božović, Predrag, "Dekontaminacija cevnog materijala tehnološki obogaćenog primordijalnim radionuklidima" in 31. симпозијум ДЗЗСЦГ : зборник радова (2021):262-268,
https://hdl.handle.net/21.15107/rcub_vinar_10120 .

TY  - CONF
AU  - Topalović, Dušan
AU  - Radenković, Mirjana
AU  - Tasić, Viša
AU  - Stanić, Vojislav
AU  - Božović, Predrag
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11124
AB  - Positive matrix factorization (PMF) is a dimension reduction method used to model the covariance structures of observable variables in order to impel a smaller number of latent nonnegative factors. It resolves receptor modeling problem, which is based on the chemical mass balance equation (CMB) and may discover hidden patterns in the environmental data, where each extracted factor is accompanied by an actual source of emission. In this paper, PMF source apportionment analyses of fine aerosol fraction (PM2.5 mode) at Belgrade suburban background site, in 2016/17 year, have been performed by processing a data set of 130 PM2.5 mass concentrations and twenty-one elemental concentrations and soot concentrations in each PM2.5 sample (mode). The PM2.5 mass concentrations in collected samples have been determined following SRPS EN 12341:201 procedure, elemental concentrations were obtained by PIXE alanytical technique in the frame of the regional IAEA project, in the Institute of Nuclear Research, Hungarian Academy of Sciences, and soot concentrations were analyzed by smoke stain reflectometry in accordance with ISO 9835:1993 (E). The EPA PMF program ver 5.0, was used to solve the PMF model. Since the determination of an optimal PMF solution is a strongly heuristic procedure, there is a necessity of finding a more quantitative ways to reduce the arbitrariness of this technique. In order to reduce the range of possible solutions, we have analyzed how the values of model parameters changes as a function of the number of factors. PMF modeling was performed in a robust mode. For the purpose of finding the best fit solution wich minimize the object function Q, we varied the number of factors in the range from 4 to 8. Additionally, influence of rotations are also analyzed in iterative steps by varying FPEAK function in the range -1 to +1 with an increment of 0.5. Obtained results indicated significant role of Q/Qexp ratio analysis for optimal solution choice. In optimization process, number of factors with Q/Qexp ratio less than 1, were rejected as a possible solutions. This paper shows that optimization procedure should include examination of rotational matrix in which the rotational degree of freedom of solution is considered. Solutions with a steep change in their rotational degree of freedom were rejected. Finally, the additional improvement can be done by optimizing the parameters representing the scaled mean value (IM) and the scaled standard deviation (IS) of the each individual column in scaled residual matrix.
PB  - RAD Centre, Niš, Serbia
C3  - RAD 2021 : 9th International Conference on Radiation in Various Fields of Research : book of abstracts; June 14-18; Herceg Novi, Montenegro
T1  - Optimization of the source apportionment solution using the rotational tools in US EPA PMF 5.0 software
SP  - 68
DO  - 10.21175/rad.abstr.book.2021.12.3
ER  - 

@conference{
author = "Topalović, Dušan and Radenković, Mirjana and Tasić, Viša and Stanić, Vojislav and Božović, Predrag",
year = "2021",
abstract = "Positive matrix factorization (PMF) is a dimension reduction method used to model the covariance structures of observable variables in order to impel a smaller number of latent nonnegative factors. It resolves receptor modeling problem, which is based on the chemical mass balance equation (CMB) and may discover hidden patterns in the environmental data, where each extracted factor is accompanied by an actual source of emission. In this paper, PMF source apportionment analyses of fine aerosol fraction (PM2.5 mode) at Belgrade suburban background site, in 2016/17 year, have been performed by processing a data set of 130 PM2.5 mass concentrations and twenty-one elemental concentrations and soot concentrations in each PM2.5 sample (mode). The PM2.5 mass concentrations in collected samples have been determined following SRPS EN 12341:201 procedure, elemental concentrations were obtained by PIXE alanytical technique in the frame of the regional IAEA project, in the Institute of Nuclear Research, Hungarian Academy of Sciences, and soot concentrations were analyzed by smoke stain reflectometry in accordance with ISO 9835:1993 (E). The EPA PMF program ver 5.0, was used to solve the PMF model. Since the determination of an optimal PMF solution is a strongly heuristic procedure, there is a necessity of finding a more quantitative ways to reduce the arbitrariness of this technique. In order to reduce the range of possible solutions, we have analyzed how the values of model parameters changes as a function of the number of factors. PMF modeling was performed in a robust mode. For the purpose of finding the best fit solution wich minimize the object function Q, we varied the number of factors in the range from 4 to 8. Additionally, influence of rotations are also analyzed in iterative steps by varying FPEAK function in the range -1 to +1 with an increment of 0.5. Obtained results indicated significant role of Q/Qexp ratio analysis for optimal solution choice. In optimization process, number of factors with Q/Qexp ratio less than 1, were rejected as a possible solutions. This paper shows that optimization procedure should include examination of rotational matrix in which the rotational degree of freedom of solution is considered. Solutions with a steep change in their rotational degree of freedom were rejected. Finally, the additional improvement can be done by optimizing the parameters representing the scaled mean value (IM) and the scaled standard deviation (IS) of the each individual column in scaled residual matrix.",
publisher = "RAD Centre, Niš, Serbia",
journal = "RAD 2021 : 9th International Conference on Radiation in Various Fields of Research : book of abstracts; June 14-18; Herceg Novi, Montenegro",
title = "Optimization of the source apportionment solution using the rotational tools in US EPA PMF 5.0 software",
pages = "68",
doi = "10.21175/rad.abstr.book.2021.12.3"
}

Topalović, D., Radenković, M., Tasić, V., Stanić, V.,& Božović, P.. (2021). Optimization of the source apportionment solution using the rotational tools in US EPA PMF 5.0 software. in RAD 2021 : 9th International Conference on Radiation in Various Fields of Research : book of abstracts; June 14-18; Herceg Novi, Montenegro
RAD Centre, Niš, Serbia., 68.
https://doi.org/10.21175/rad.abstr.book.2021.12.3

Topalović D, Radenković M, Tasić V, Stanić V, Božović P. Optimization of the source apportionment solution using the rotational tools in US EPA PMF 5.0 software. in RAD 2021 : 9th International Conference on Radiation in Various Fields of Research : book of abstracts; June 14-18; Herceg Novi, Montenegro. 2021;:68.
doi:10.21175/rad.abstr.book.2021.12.3 .

Topalović, Dušan, Radenković, Mirjana, Tasić, Viša, Stanić, Vojislav, Božović, Predrag, "Optimization of the source apportionment solution using the rotational tools in US EPA PMF 5.0 software" in RAD 2021 : 9th International Conference on Radiation in Various Fields of Research : book of abstracts; June 14-18; Herceg Novi, Montenegro (2021):68,
https://doi.org/10.21175/rad.abstr.book.2021.12.3 . .

TY  - JOUR
AU  - Apostolakopoulos, Filip Haralambos
AU  - Kržanović, Nikola
AU  - Božović, Predrag
AU  - Stanković, Koviljka
AU  - Perazić, Luka
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10275
AB  - The aim of this paper is to examine the energy and angular responses of thermoluminescent (LiF:Mg,Ti and LiF:Mg,Cu,P) and optically stimulated luminescent (Al2O3:C) dosimeters with experimental measurements and Monte Carlo simulations. Nine radiation qualities, with mean energies ranging from 33 keV to 1.25 MeV, and five angles of incidence, between 0° and 80°, were used to conduct this analysis. The IEC 62387:2020 international radiation protection standard was used as the dosimeter response measure of quality. The experimental and simulated data exhibit that the dosimeter responses meet the standard's criteria, with certain exceptions on lower energies.
T2  - Nuclear Technology and Radiation Protection
T1  - Comparison of experimental and simulated responses of TL and OSL dosimeters in poly-energetic and multi-directional photon radiation fields
VL  - 36
IS  - 4
SP  - 329
EP  - 337
DO  - 10.2298/NTRP2104329A
ER  - 

@article{
author = "Apostolakopoulos, Filip Haralambos and Kržanović, Nikola and Božović, Predrag and Stanković, Koviljka and Perazić, Luka",
year = "2021",
abstract = "The aim of this paper is to examine the energy and angular responses of thermoluminescent (LiF:Mg,Ti and LiF:Mg,Cu,P) and optically stimulated luminescent (Al2O3:C) dosimeters with experimental measurements and Monte Carlo simulations. Nine radiation qualities, with mean energies ranging from 33 keV to 1.25 MeV, and five angles of incidence, between 0° and 80°, were used to conduct this analysis. The IEC 62387:2020 international radiation protection standard was used as the dosimeter response measure of quality. The experimental and simulated data exhibit that the dosimeter responses meet the standard's criteria, with certain exceptions on lower energies.",
journal = "Nuclear Technology and Radiation Protection",
title = "Comparison of experimental and simulated responses of TL and OSL dosimeters in poly-energetic and multi-directional photon radiation fields",
volume = "36",
number = "4",
pages = "329-337",
doi = "10.2298/NTRP2104329A"
}

Apostolakopoulos, F. H., Kržanović, N., Božović, P., Stanković, K.,& Perazić, L.. (2021). Comparison of experimental and simulated responses of TL and OSL dosimeters in poly-energetic and multi-directional photon radiation fields. in Nuclear Technology and Radiation Protection, 36(4), 329-337.
https://doi.org/10.2298/NTRP2104329A

Apostolakopoulos FH, Kržanović N, Božović P, Stanković K, Perazić L. Comparison of experimental and simulated responses of TL and OSL dosimeters in poly-energetic and multi-directional photon radiation fields. in Nuclear Technology and Radiation Protection. 2021;36(4):329-337.
doi:10.2298/NTRP2104329A .

Apostolakopoulos, Filip Haralambos, Kržanović, Nikola, Božović, Predrag, Stanković, Koviljka, Perazić, Luka, "Comparison of experimental and simulated responses of TL and OSL dosimeters in poly-energetic and multi-directional photon radiation fields" in Nuclear Technology and Radiation Protection, 36, no. 4 (2021):329-337,
https://doi.org/10.2298/NTRP2104329A . .

TY  - CONF
AU  - Topalović, Dušan
AU  - Arsoski, V. V.
AU  - Tadić, M. Ž.
AU  - Radenković, M.
AU  - Božović, Predrag
AU  - Peeters, F. M.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10903
AB  - HgTe is a II-VI compound semi-metal with inverted band ordering, low effective mass and high electron mobility [1]. Nanostructures based on this compound are intensively studied due to their specific topological properties [2]. In HgTe based nanostructures an inversion in the band ordering is accompanied by a quantum phase transition from a normal insulator to the phase of a nontrivial twodimensional (2D) topological insulator or the Quantum Spin Hall insulator [3]. A good dynamic stability of HgTe monolayer is predicted from first-principles methods [4], which opened the possibility to use this material in thin-layer electronic devices. Even before these theoretical findings, HgTe nanoribbons have been experimentally realized [5], and a topological field effect quantum transistor was proposed [6]. We investigate the electronic and transport properties of low-buckled 2D HgTe zig-zag and armchair nanoribbons. Modeling of electronic states was performed by using a single-particle tight-binding model in the nearest-neighbour approximation [7]. The sp3d 5 s * basis set in the Slater-Koster notation was used. The spin-orbit interaction was included in the model by using the Chadi formalism [8]. We found specific edge states in the range of energies that define the fundamental band gap of 2D HgTe monolayer. Moreover, we show that the electronic and transport properties of these states depend strongly on nanoribbon width and type of edge, and we demonstrate how external fields can be employed to control them.
PB  - Belgrade : Institute of Physics Belgrade
C3  - PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade
T1  - Influence of boundary conditions on electronic and transport properties in monolayer low – buckled HgTe nanoribbons
SP  - 77
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10903
ER  - 

@conference{
author = "Topalović, Dušan and Arsoski, V. V. and Tadić, M. Ž. and Radenković, M. and Božović, Predrag and Peeters, F. M.",
year = "2021",
abstract = "HgTe is a II-VI compound semi-metal with inverted band ordering, low effective mass and high electron mobility [1]. Nanostructures based on this compound are intensively studied due to their specific topological properties [2]. In HgTe based nanostructures an inversion in the band ordering is accompanied by a quantum phase transition from a normal insulator to the phase of a nontrivial twodimensional (2D) topological insulator or the Quantum Spin Hall insulator [3]. A good dynamic stability of HgTe monolayer is predicted from first-principles methods [4], which opened the possibility to use this material in thin-layer electronic devices. Even before these theoretical findings, HgTe nanoribbons have been experimentally realized [5], and a topological field effect quantum transistor was proposed [6]. We investigate the electronic and transport properties of low-buckled 2D HgTe zig-zag and armchair nanoribbons. Modeling of electronic states was performed by using a single-particle tight-binding model in the nearest-neighbour approximation [7]. The sp3d 5 s * basis set in the Slater-Koster notation was used. The spin-orbit interaction was included in the model by using the Chadi formalism [8]. We found specific edge states in the range of energies that define the fundamental band gap of 2D HgTe monolayer. Moreover, we show that the electronic and transport properties of these states depend strongly on nanoribbon width and type of edge, and we demonstrate how external fields can be employed to control them.",
publisher = "Belgrade : Institute of Physics Belgrade",
journal = "PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade",
title = "Influence of boundary conditions on electronic and transport properties in monolayer low – buckled HgTe nanoribbons",
pages = "77",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10903"
}

Topalović, D., Arsoski, V. V., Tadić, M. Ž., Radenković, M., Božović, P.,& Peeters, F. M.. (2021). Influence of boundary conditions on electronic and transport properties in monolayer low – buckled HgTe nanoribbons. in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade
Belgrade : Institute of Physics Belgrade., 77.
https://hdl.handle.net/21.15107/rcub_vinar_10903

Topalović D, Arsoski VV, Tadić MŽ, Radenković M, Božović P, Peeters FM. Influence of boundary conditions on electronic and transport properties in monolayer low – buckled HgTe nanoribbons. in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade. 2021;:77.
https://hdl.handle.net/21.15107/rcub_vinar_10903 .

Topalović, Dušan, Arsoski, V. V., Tadić, M. Ž., Radenković, M., Božović, Predrag, Peeters, F. M., "Influence of boundary conditions on electronic and transport properties in monolayer low – buckled HgTe nanoribbons" in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade (2021):77,
https://hdl.handle.net/21.15107/rcub_vinar_10903 .

TY  - CONF
AU  - Kržanović, Nikola
AU  - Blideanu, Valentin
AU  - Kojić, Andrea
AU  - Božović, Predrag
AU  - Živanović, Miloš Z.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10090
AB  - The 19NET04 MIRA Joint Network Project is a project within the EMPIR 2019 call. The main objectives of the project are to establish stakeholder dialogue, to develop the Strategic Research Agenda for the medical use of ionising radiation, to define how current European metrological services meet regulatory and stakeholder needs, to set up a knowledge-sharing programme for the stakeholders and to develop a plan for the European metrology research infrastructure via the European Metrology Network. The project addresses the strong need for a coordinated action on an international level in the different fields of ionising radiation which include medical applications, radiobiology and radiation protection.
AB  - Projekat za uspostavljanje metrološke mreže 19NET04 MIRA predstavlja međunarodni projekat u okviru EMPIR 2019 poziva. Glavni ciljevi projekta jesu uspostavljanje dijaloga interesenata (stejkholdera), stvaranje strateškog plana razvoja za medicinske primene jonizujućeg zračenja, ispitivanje u kojoj meri trenutne metrološke mogućnosti evropskih instituta zadovoljavaju potrebe regulatornih tela i interesanata, postavljanje programa razmene znanja i razvoj plana za evropsku metrološku infrastrukturu putem evropske metrološke mreže. Projekat će dati odgovor na potrebu za koordiniranim aktivnostima na međunarodnom nivou u različitim oblastima primene jonizujućeg zračenja u medicini, radiobiologiji i zaštiti od zračenja.
PB  - Institut za nuklearne nauke "Vinča"
PB  - Društvo za zaštitu od zračenja Srbije i Crne Gore
C3  - 31. симпозијум ДЗЗСЦГ : зборник радова
T1  - EMPIR Project 19NET04 MIRA – Joint Network Project Significance
T1  - EMPIR projekat 19NET04 MIRA – značaj projekta za uspostavljanje metrološke mreže
SP  - 236
EP  - 239
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10090
ER  - 

@conference{
author = "Kržanović, Nikola and Blideanu, Valentin and Kojić, Andrea and Božović, Predrag and Živanović, Miloš Z.",
year = "2021",
abstract = "The 19NET04 MIRA Joint Network Project is a project within the EMPIR 2019 call. The main objectives of the project are to establish stakeholder dialogue, to develop the Strategic Research Agenda for the medical use of ionising radiation, to define how current European metrological services meet regulatory and stakeholder needs, to set up a knowledge-sharing programme for the stakeholders and to develop a plan for the European metrology research infrastructure via the European Metrology Network. The project addresses the strong need for a coordinated action on an international level in the different fields of ionising radiation which include medical applications, radiobiology and radiation protection., Projekat za uspostavljanje metrološke mreže 19NET04 MIRA predstavlja međunarodni projekat u okviru EMPIR 2019 poziva. Glavni ciljevi projekta jesu uspostavljanje dijaloga interesenata (stejkholdera), stvaranje strateškog plana razvoja za medicinske primene jonizujućeg zračenja, ispitivanje u kojoj meri trenutne metrološke mogućnosti evropskih instituta zadovoljavaju potrebe regulatornih tela i interesanata, postavljanje programa razmene znanja i razvoj plana za evropsku metrološku infrastrukturu putem evropske metrološke mreže. Projekat će dati odgovor na potrebu za koordiniranim aktivnostima na međunarodnom nivou u različitim oblastima primene jonizujućeg zračenja u medicini, radiobiologiji i zaštiti od zračenja.",
publisher = "Institut za nuklearne nauke "Vinča", Društvo za zaštitu od zračenja Srbije i Crne Gore",
journal = "31. симпозијум ДЗЗСЦГ : зборник радова",
title = "EMPIR Project 19NET04 MIRA – Joint Network Project Significance, EMPIR projekat 19NET04 MIRA – značaj projekta za uspostavljanje metrološke mreže",
pages = "236-239",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10090"
}

Kržanović, N., Blideanu, V., Kojić, A., Božović, P.,& Živanović, M. Z.. (2021). EMPIR Project 19NET04 MIRA – Joint Network Project Significance. in 31. симпозијум ДЗЗСЦГ : зборник радова
Institut za nuklearne nauke "Vinča"., 236-239.
https://hdl.handle.net/21.15107/rcub_vinar_10090

Kržanović N, Blideanu V, Kojić A, Božović P, Živanović MZ. EMPIR Project 19NET04 MIRA – Joint Network Project Significance. in 31. симпозијум ДЗЗСЦГ : зборник радова. 2021;:236-239.
https://hdl.handle.net/21.15107/rcub_vinar_10090 .

Kržanović, Nikola, Blideanu, Valentin, Kojić, Andrea, Božović, Predrag, Živanović, Miloš Z., "EMPIR Project 19NET04 MIRA – Joint Network Project Significance" in 31. симпозијум ДЗЗСЦГ : зборник радова (2021):236-239,
https://hdl.handle.net/21.15107/rcub_vinar_10090 .

TY  - CONF
AU  - Stanković-Petrović, Jelena S.
AU  - Krajinović, Marko
AU  - Kržanović, Nikola
AU  - Živanović, Miloš
AU  - Kojić, Andrea
AU  - Božović, Predrag
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11129
AB  - The results of the post-irradiation fading of whole body dosemeters based on two TLD-100TM (Thermo Scientific™ Harshaw™, USA) detectors are presented. The dosemeters are regularly used by accredited individual monitoring service (IMS) at Vinca Institute of Nuclear Science (VINS), Belgrade, Serbia. The testing of post-irradiation fading was carried out according to International Electrotechnical Commission (IEC) 62387:2020 standard. The irradiations are done in S-Cs137 field at secondary standard dosimetry laboratory (SSDL) at VINS, according to International Organization for Standardization document ISO 4037-3:2019. The chosen reference personal dose equivalent value was 3 mSv. The research was carried out in the period from October 2020 to February 2021, and it lasted 128 days. The frequency of irradiations was approximately 7 days, while 3 periods between irradiations were longer than 10 days, due to COVID-19 pandemic. The irradiations were performed at different dates; thus, all dose readouts were done on the same day to prevent influence of reader’s instabilities. The irradiated dosemeters were stored at the same room where the average temperature was nearly 20°C. There were 14 groups with 6 dosemeters for irradiation and 2 dosemeters for natural background radiation level correction. The reader was Harshaw TLD™ Model 6600 Plus Automated Reader (Thermo Fisher Scientific, USA). The whole glow curve was used for dose estimation (all of 200 channels). The time as influence quantity was considered to be of type F, thus the range of relative response was limiting factor in the analysis. The results showed that the maximum measurement time tmax is 72 days for deep dose (Hp(10)) detector, and 85 days for shallow dose (Hp(0.07)) detector. Thus, the standard’s requirement is satisfied, as it is required minimum of 30 days. The relative response range for all of the 14 groups was from 0.82 to 1.14 and from 0.83 to 1.17, for deep and shallow dose, respectively. The research has limitation as the irradiations were organized aligned to COVID-19 working schedule. One of the consequences of this timetable is lack of 7 days’ time point, thus the values from 16 days’ time point was used as referential.
PB  - RAD Centre, Niš, Serbia
C3  - RAD 2021 : 9th International Conference on Radiation in Various Fields of Research : book of abstracts; June 14-18; Herceg Novi, Montenegro
T1  - TLD-100 post-irradiation fading characteristics according to IEC 62387:2020 standard
SP  - 219
DO  - 10.21175/rad.abstr.book.2021.31.12
ER  - 

@conference{
author = "Stanković-Petrović, Jelena S. and Krajinović, Marko and Kržanović, Nikola and Živanović, Miloš and Kojić, Andrea and Božović, Predrag",
year = "2021",
abstract = "The results of the post-irradiation fading of whole body dosemeters based on two TLD-100TM (Thermo Scientific™ Harshaw™, USA) detectors are presented. The dosemeters are regularly used by accredited individual monitoring service (IMS) at Vinca Institute of Nuclear Science (VINS), Belgrade, Serbia. The testing of post-irradiation fading was carried out according to International Electrotechnical Commission (IEC) 62387:2020 standard. The irradiations are done in S-Cs137 field at secondary standard dosimetry laboratory (SSDL) at VINS, according to International Organization for Standardization document ISO 4037-3:2019. The chosen reference personal dose equivalent value was 3 mSv. The research was carried out in the period from October 2020 to February 2021, and it lasted 128 days. The frequency of irradiations was approximately 7 days, while 3 periods between irradiations were longer than 10 days, due to COVID-19 pandemic. The irradiations were performed at different dates; thus, all dose readouts were done on the same day to prevent influence of reader’s instabilities. The irradiated dosemeters were stored at the same room where the average temperature was nearly 20°C. There were 14 groups with 6 dosemeters for irradiation and 2 dosemeters for natural background radiation level correction. The reader was Harshaw TLD™ Model 6600 Plus Automated Reader (Thermo Fisher Scientific, USA). The whole glow curve was used for dose estimation (all of 200 channels). The time as influence quantity was considered to be of type F, thus the range of relative response was limiting factor in the analysis. The results showed that the maximum measurement time tmax is 72 days for deep dose (Hp(10)) detector, and 85 days for shallow dose (Hp(0.07)) detector. Thus, the standard’s requirement is satisfied, as it is required minimum of 30 days. The relative response range for all of the 14 groups was from 0.82 to 1.14 and from 0.83 to 1.17, for deep and shallow dose, respectively. The research has limitation as the irradiations were organized aligned to COVID-19 working schedule. One of the consequences of this timetable is lack of 7 days’ time point, thus the values from 16 days’ time point was used as referential.",
publisher = "RAD Centre, Niš, Serbia",
journal = "RAD 2021 : 9th International Conference on Radiation in Various Fields of Research : book of abstracts; June 14-18; Herceg Novi, Montenegro",
title = "TLD-100 post-irradiation fading characteristics according to IEC 62387:2020 standard",
pages = "219",
doi = "10.21175/rad.abstr.book.2021.31.12"
}

Stanković-Petrović, J. S., Krajinović, M., Kržanović, N., Živanović, M., Kojić, A.,& Božović, P.. (2021). TLD-100 post-irradiation fading characteristics according to IEC 62387:2020 standard. in RAD 2021 : 9th International Conference on Radiation in Various Fields of Research : book of abstracts; June 14-18; Herceg Novi, Montenegro
RAD Centre, Niš, Serbia., 219.
https://doi.org/10.21175/rad.abstr.book.2021.31.12

Stanković-Petrović JS, Krajinović M, Kržanović N, Živanović M, Kojić A, Božović P. TLD-100 post-irradiation fading characteristics according to IEC 62387:2020 standard. in RAD 2021 : 9th International Conference on Radiation in Various Fields of Research : book of abstracts; June 14-18; Herceg Novi, Montenegro. 2021;:219.
doi:10.21175/rad.abstr.book.2021.31.12 .

Stanković-Petrović, Jelena S., Krajinović, Marko, Kržanović, Nikola, Živanović, Miloš, Kojić, Andrea, Božović, Predrag, "TLD-100 post-irradiation fading characteristics according to IEC 62387:2020 standard" in RAD 2021 : 9th International Conference on Radiation in Various Fields of Research : book of abstracts; June 14-18; Herceg Novi, Montenegro (2021):219,
https://doi.org/10.21175/rad.abstr.book.2021.31.12 . .

TY  - JOUR
AU  - Rafajlović, Stefan
AU  - Ciraj-Bjelac, Olivera
AU  - Božović, Predrag
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9182
AB  - The objective of this work is to investigate the possibility to set a national diagnostic reference levels (nDRLs) for diagnostic and screening mammography in Serbia based on local practice and available resources. This study included all types of mammography systems that are currently used in Serbia, namely screen-film mammography (SFM), computed radiography (CR) and full-field digital mammography (FFDM). The nDRLs are provided in terms of mean glandular dose (MGD) for different breast thicknesses simulated by polymethyl methacrylate (PMMA) phantom. For each breast thickness, MGD was calculated for the X-ray tube output, using clinically used exposure parameters. DRLs were chosen as the 75th percentile of MGD distribution for 20-, 40-, 45-, 60- and 70-mm phantom thicknesses. For SFM units proposed nDRL values are 0.7, 2.1, 2.7, 4.6 and 6.8 mGy; for CR units proposed nDRL values are 0.7, 1.8, 2.4, 4.5 and 5.6 mGy; and corresponding values for FFDM units are 0.8, 1.7, 2, 2. and 3.2 mGy for 20-, 40-, 45-, 60- and 70-mm PMMA thickness, respectively.
T2  - Radiation Protection Dosimetry
T1  - Towards national diagnostic reference levels for mammography in Serbia
VL  - 191
IS  - 4
SP  - 477
EP  - 486
DO  - 10.1093/rpd/ncaa173
ER  - 

@article{
author = "Rafajlović, Stefan and Ciraj-Bjelac, Olivera and Božović, Predrag",
year = "2020",
abstract = "The objective of this work is to investigate the possibility to set a national diagnostic reference levels (nDRLs) for diagnostic and screening mammography in Serbia based on local practice and available resources. This study included all types of mammography systems that are currently used in Serbia, namely screen-film mammography (SFM), computed radiography (CR) and full-field digital mammography (FFDM). The nDRLs are provided in terms of mean glandular dose (MGD) for different breast thicknesses simulated by polymethyl methacrylate (PMMA) phantom. For each breast thickness, MGD was calculated for the X-ray tube output, using clinically used exposure parameters. DRLs were chosen as the 75th percentile of MGD distribution for 20-, 40-, 45-, 60- and 70-mm phantom thicknesses. For SFM units proposed nDRL values are 0.7, 2.1, 2.7, 4.6 and 6.8 mGy; for CR units proposed nDRL values are 0.7, 1.8, 2.4, 4.5 and 5.6 mGy; and corresponding values for FFDM units are 0.8, 1.7, 2, 2. and 3.2 mGy for 20-, 40-, 45-, 60- and 70-mm PMMA thickness, respectively.",
journal = "Radiation Protection Dosimetry",
title = "Towards national diagnostic reference levels for mammography in Serbia",
volume = "191",
number = "4",
pages = "477-486",
doi = "10.1093/rpd/ncaa173"
}

Rafajlović, S., Ciraj-Bjelac, O.,& Božović, P.. (2020). Towards national diagnostic reference levels for mammography in Serbia. in Radiation Protection Dosimetry, 191(4), 477-486.
https://doi.org/10.1093/rpd/ncaa173

Rafajlović S, Ciraj-Bjelac O, Božović P. Towards national diagnostic reference levels for mammography in Serbia. in Radiation Protection Dosimetry. 2020;191(4):477-486.
doi:10.1093/rpd/ncaa173 .

Rafajlović, Stefan, Ciraj-Bjelac, Olivera, Božović, Predrag, "Towards national diagnostic reference levels for mammography in Serbia" in Radiation Protection Dosimetry, 191, no. 4 (2020):477-486,
https://doi.org/10.1093/rpd/ncaa173 . .

TY  - JOUR
AU  - Božović, Predrag
AU  - Ciraj-Bjelac, Olivera
AU  - Stanković-Petrović, Jelena S.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8786
AB  - Medical personnel performing interventional procedures in cardiology and radiology is considered to be a professional group exposed to high doses of ionizing radiation. Reduction of the eye lens dose limit made its assessment in the interventional procedures one of the most challenging topics. The objective of this work is to assess eye lens doses based on the whole-body doses using methods of computational dosimetry. Assessment included different C-arm orientations (PA, LAO and RAO), tube voltages (80 –110 kV) and efficiency of different combinations of protective equipment used in interventional procedures. Center position at the height of the thyroid gives best estimate of eye lens dose, with spreads of 11% (13%), 13% (17%) and 14% (13%) for the left (right) eye lens. The conversion factors of 1.03 (0.83), 1.28 (1.06) and 1.36 (1.06) to convert whole body to eye lens dose were derived for positions of first operator, nurse and radiographer, respectively. The eye lens dose reduction factors for different combinations of applied protective equipment are 178, 5 and 6, respectively.
T2  - Radiation Protection Dosimetry
T1  - Occupational Eye Lens Dose Estimated Using Whole-Body Dosemeter In Interventional Cardiology And Radiology: A Monte Carlo Study
VL  - 185
IS  - 2
SP  - 135
EP  - 142
DO  - 10.1093/rpd/ncy283
ER  - 

@article{
author = "Božović, Predrag and Ciraj-Bjelac, Olivera and Stanković-Petrović, Jelena S.",
year = "2019",
abstract = "Medical personnel performing interventional procedures in cardiology and radiology is considered to be a professional group exposed to high doses of ionizing radiation. Reduction of the eye lens dose limit made its assessment in the interventional procedures one of the most challenging topics. The objective of this work is to assess eye lens doses based on the whole-body doses using methods of computational dosimetry. Assessment included different C-arm orientations (PA, LAO and RAO), tube voltages (80 –110 kV) and efficiency of different combinations of protective equipment used in interventional procedures. Center position at the height of the thyroid gives best estimate of eye lens dose, with spreads of 11% (13%), 13% (17%) and 14% (13%) for the left (right) eye lens. The conversion factors of 1.03 (0.83), 1.28 (1.06) and 1.36 (1.06) to convert whole body to eye lens dose were derived for positions of first operator, nurse and radiographer, respectively. The eye lens dose reduction factors for different combinations of applied protective equipment are 178, 5 and 6, respectively.",
journal = "Radiation Protection Dosimetry",
title = "Occupational Eye Lens Dose Estimated Using Whole-Body Dosemeter In Interventional Cardiology And Radiology: A Monte Carlo Study",
volume = "185",
number = "2",
pages = "135-142",
doi = "10.1093/rpd/ncy283"
}

Božović, P., Ciraj-Bjelac, O.,& Stanković-Petrović, J. S.. (2019). Occupational Eye Lens Dose Estimated Using Whole-Body Dosemeter In Interventional Cardiology And Radiology: A Monte Carlo Study. in Radiation Protection Dosimetry, 185(2), 135-142.
https://doi.org/10.1093/rpd/ncy283

Božović P, Ciraj-Bjelac O, Stanković-Petrović JS. Occupational Eye Lens Dose Estimated Using Whole-Body Dosemeter In Interventional Cardiology And Radiology: A Monte Carlo Study. in Radiation Protection Dosimetry. 2019;185(2):135-142.
doi:10.1093/rpd/ncy283 .

Božović, Predrag, Ciraj-Bjelac, Olivera, Stanković-Petrović, Jelena S., "Occupational Eye Lens Dose Estimated Using Whole-Body Dosemeter In Interventional Cardiology And Radiology: A Monte Carlo Study" in Radiation Protection Dosimetry, 185, no. 2 (2019):135-142,
https://doi.org/10.1093/rpd/ncy283 . .

TY  - CONF
AU  - Kržanović, Nikola
AU  - Živanović, Miloš Z.
AU  - Božović, Predrag
AU  - Stanković, Srboljub
PY  - 2019
UR  - https://plus.sr.cobiss.net/opac7/bib/279687436
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8715
AB  - Kontrola kvaliteta u radioterapiji je od velike vaţnosti za poboljšanje preciznosti i pouzdanosti radioterapijskih procedura. Minimizacija negativnih posledica po pacijente se postiţe smanjenjem verovatnoće pojavljivanja slučajnih i sistematskih grešaka identifikovanjem problema u postojećim standardnim procedurama u bolnicama. Značajna metoda kontrole kvaliteta rada radioterapijskih centara jeste program poštanske termoluminiscentne dozimetrije, zajednički organizovan od strane Međunarodne agencije za atomsku energiju i Svetske zdravstvene organizacije, a u kojem učestvuje oko 1700 bolnica širom sveta. Radioterapijski centri u Srbiji takođe učestvuju u ovom programu. Program poređenja apsorbovanih doza u vodi u radioterapijskim centrima u Srbiji je sproveden i tokom 2017, 2018. i 2019. godine. U tom periodu, broj obuhvaćenih centara je porastao sa šest na osam. Radiofotoluminiscentni dozimetri su ozračivani u visokoenergetskim poljima X-fotona generisanim pomoću linearnih akceleratora.
AB  - Quality control in radiotherapy is of great importance in order to improve accuracy and reliability of radiotherapy procedures in hospitals. Minimization of the possible negative consequences of these procedures is achieved by reducing the probability of any random or systematic errors appearing, by determining the existing problems in the standard hospital procedures. One of the important methods for the radiotherapy facilities quality control is the postal thermoluminiscent dosimetry programme, co-organized by International Atomic Energy Agency and the World Health Organization, in which approximately 1700 hospitals throughout the world are participating. Radiotherapy centers in Serbia also participate in this programme, which has been executed during 2017, 2018 and 2019. During this period the number of participating radiotherapy centers in Serbia has increased from six to eight. Radiophotoluminiscent dosimeters have been irradiated in the high-energy X-ray fields generated by using linear accelerators.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 30. симпозијум ДЗЗСЦГ : зборник радова
T1  - Provera apsorbovanih doza u vodi u radioterapijskim ustanovama Srbije od 2017. do 2019. godine
T1  - Dosimetry audit in radiotherapy centers in Serbia in period from 2017 to 2019
SP  - 447
EP  - 452
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8715
ER  - 

@conference{
author = "Kržanović, Nikola and Živanović, Miloš Z. and Božović, Predrag and Stanković, Srboljub",
year = "2019",
abstract = "Kontrola kvaliteta u radioterapiji je od velike vaţnosti za poboljšanje preciznosti i pouzdanosti radioterapijskih procedura. Minimizacija negativnih posledica po pacijente se postiţe smanjenjem verovatnoće pojavljivanja slučajnih i sistematskih grešaka identifikovanjem problema u postojećim standardnim procedurama u bolnicama. Značajna metoda kontrole kvaliteta rada radioterapijskih centara jeste program poštanske termoluminiscentne dozimetrije, zajednički organizovan od strane Međunarodne agencije za atomsku energiju i Svetske zdravstvene organizacije, a u kojem učestvuje oko 1700 bolnica širom sveta. Radioterapijski centri u Srbiji takođe učestvuju u ovom programu. Program poređenja apsorbovanih doza u vodi u radioterapijskim centrima u Srbiji je sproveden i tokom 2017, 2018. i 2019. godine. U tom periodu, broj obuhvaćenih centara je porastao sa šest na osam. Radiofotoluminiscentni dozimetri su ozračivani u visokoenergetskim poljima X-fotona generisanim pomoću linearnih akceleratora., Quality control in radiotherapy is of great importance in order to improve accuracy and reliability of radiotherapy procedures in hospitals. Minimization of the possible negative consequences of these procedures is achieved by reducing the probability of any random or systematic errors appearing, by determining the existing problems in the standard hospital procedures. One of the important methods for the radiotherapy facilities quality control is the postal thermoluminiscent dosimetry programme, co-organized by International Atomic Energy Agency and the World Health Organization, in which approximately 1700 hospitals throughout the world are participating. Radiotherapy centers in Serbia also participate in this programme, which has been executed during 2017, 2018 and 2019. During this period the number of participating radiotherapy centers in Serbia has increased from six to eight. Radiophotoluminiscent dosimeters have been irradiated in the high-energy X-ray fields generated by using linear accelerators.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "30. симпозијум ДЗЗСЦГ : зборник радова",
title = "Provera apsorbovanih doza u vodi u radioterapijskim ustanovama Srbije od 2017. do 2019. godine, Dosimetry audit in radiotherapy centers in Serbia in period from 2017 to 2019",
pages = "447-452",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8715"
}

Kržanović, N., Živanović, M. Z., Božović, P.,& Stanković, S.. (2019). Provera apsorbovanih doza u vodi u radioterapijskim ustanovama Srbije od 2017. do 2019. godine. in 30. симпозијум ДЗЗСЦГ : зборник радова
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 447-452.
https://hdl.handle.net/21.15107/rcub_vinar_8715

Kržanović N, Živanović MZ, Božović P, Stanković S. Provera apsorbovanih doza u vodi u radioterapijskim ustanovama Srbije od 2017. do 2019. godine. in 30. симпозијум ДЗЗСЦГ : зборник радова. 2019;:447-452.
https://hdl.handle.net/21.15107/rcub_vinar_8715 .

Kržanović, Nikola, Živanović, Miloš Z., Božović, Predrag, Stanković, Srboljub, "Provera apsorbovanih doza u vodi u radioterapijskim ustanovama Srbije od 2017. do 2019. godine" in 30. симпозијум ДЗЗСЦГ : зборник радова (2019):447-452,
https://hdl.handle.net/21.15107/rcub_vinar_8715 .

TY  - CONF
AU  - Antić, Vojislav
AU  - Ciraj-Bjelac, Olivera
AU  - Božović, Predrag
AU  - Durutović, Otaš
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11154
PB  - RAD Centre, Niš, Serbia
C3  - RAD 2019 : 7th International Conference on Radiation in Various Fields of Research : book of abstracts; June 10-14, 2019; Herceg Novi, Montenegro
T1  - Assessment of the occupational exposure of urologists during percutaneous nephrolithotomy surgical interventions
SP  - 284
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11154
ER  - 

@conference{
author = "Antić, Vojislav and Ciraj-Bjelac, Olivera and Božović, Predrag and Durutović, Otaš",
year = "2019",
publisher = "RAD Centre, Niš, Serbia",
journal = "RAD 2019 : 7th International Conference on Radiation in Various Fields of Research : book of abstracts; June 10-14, 2019; Herceg Novi, Montenegro",
title = "Assessment of the occupational exposure of urologists during percutaneous nephrolithotomy surgical interventions",
pages = "284",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11154"
}

Antić, V., Ciraj-Bjelac, O., Božović, P.,& Durutović, O.. (2019). Assessment of the occupational exposure of urologists during percutaneous nephrolithotomy surgical interventions. in RAD 2019 : 7th International Conference on Radiation in Various Fields of Research : book of abstracts; June 10-14, 2019; Herceg Novi, Montenegro
RAD Centre, Niš, Serbia., 284.
https://hdl.handle.net/21.15107/rcub_vinar_11154

Antić V, Ciraj-Bjelac O, Božović P, Durutović O. Assessment of the occupational exposure of urologists during percutaneous nephrolithotomy surgical interventions. in RAD 2019 : 7th International Conference on Radiation in Various Fields of Research : book of abstracts; June 10-14, 2019; Herceg Novi, Montenegro. 2019;:284.
https://hdl.handle.net/21.15107/rcub_vinar_11154 .

Antić, Vojislav, Ciraj-Bjelac, Olivera, Božović, Predrag, Durutović, Otaš, "Assessment of the occupational exposure of urologists during percutaneous nephrolithotomy surgical interventions" in RAD 2019 : 7th International Conference on Radiation in Various Fields of Research : book of abstracts; June 10-14, 2019; Herceg Novi, Montenegro (2019):284,
https://hdl.handle.net/21.15107/rcub_vinar_11154 .

TY  - JOUR
AU  - Božović, Predrag
AU  - Ciraj-Bjelac, Olivera
AU  - Stanković-Petrović, Jelena S.
AU  - Aranđić, Danijela
AU  - Čeklić, Sandra
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8120
AB  - Medical staff performing interventional procedures in cardiology and radiology is considered to be a professional group exposed to high doses of ionizing radiation. With new epidemiological evidences and recently reduced eye lens dose limit, dose assessment to the lens of the eye, in the interventional cardiology, has become one of the most challenging research topics. This paper presents results of the eye lens dose assessment in interventional cardiology obtained by means of the computational dosimetry. Since placing and wearing the dedicated eye lens dosimeter is encumbering for the staff, Monte Carlo simulation provides an accurate and efficient method for obtaining an indication of doses to the eye lenses. Eye lens doses were estimated for three typical beam projections (PA, LAO, and RAO) and tube voltages ranging from 80 kV to 110 kV, with different protective equipment setups, for the first operator position. Simulations were carried out using MCNPX code. Results revealed that a whole body dosimeter worn at the thyroid center position gives the best estimate of the eye lens dose with a spread from 11 % to 18 % for the left eye. Corresponding average conversion coefficient from whole body lo the eye lens dose is estimated to be 0.18. © 2018; Vinca Inst Nuclear Sci. All rights reserved.
T2  - Nuclear Technology and Radiation Protection
T1  - Utilizing Monte Carlo simulations in estimation of occupational eye lens dose based on whole body dosemeter in interventional cardiology and radiology
VL  - 33
IS  - 4
SP  - 375
EP  - 379
DO  - 10.2298/NTRP180730005B
ER  - 

@article{
author = "Božović, Predrag and Ciraj-Bjelac, Olivera and Stanković-Petrović, Jelena S. and Aranđić, Danijela and Čeklić, Sandra",
year = "2018",
abstract = "Medical staff performing interventional procedures in cardiology and radiology is considered to be a professional group exposed to high doses of ionizing radiation. With new epidemiological evidences and recently reduced eye lens dose limit, dose assessment to the lens of the eye, in the interventional cardiology, has become one of the most challenging research topics. This paper presents results of the eye lens dose assessment in interventional cardiology obtained by means of the computational dosimetry. Since placing and wearing the dedicated eye lens dosimeter is encumbering for the staff, Monte Carlo simulation provides an accurate and efficient method for obtaining an indication of doses to the eye lenses. Eye lens doses were estimated for three typical beam projections (PA, LAO, and RAO) and tube voltages ranging from 80 kV to 110 kV, with different protective equipment setups, for the first operator position. Simulations were carried out using MCNPX code. Results revealed that a whole body dosimeter worn at the thyroid center position gives the best estimate of the eye lens dose with a spread from 11 % to 18 % for the left eye. Corresponding average conversion coefficient from whole body lo the eye lens dose is estimated to be 0.18. © 2018; Vinca Inst Nuclear Sci. All rights reserved.",
journal = "Nuclear Technology and Radiation Protection",
title = "Utilizing Monte Carlo simulations in estimation of occupational eye lens dose based on whole body dosemeter in interventional cardiology and radiology",
volume = "33",
number = "4",
pages = "375-379",
doi = "10.2298/NTRP180730005B"
}

Božović, P., Ciraj-Bjelac, O., Stanković-Petrović, J. S., Aranđić, D.,& Čeklić, S.. (2018). Utilizing Monte Carlo simulations in estimation of occupational eye lens dose based on whole body dosemeter in interventional cardiology and radiology. in Nuclear Technology and Radiation Protection, 33(4), 375-379.
https://doi.org/10.2298/NTRP180730005B

Božović P, Ciraj-Bjelac O, Stanković-Petrović JS, Aranđić D, Čeklić S. Utilizing Monte Carlo simulations in estimation of occupational eye lens dose based on whole body dosemeter in interventional cardiology and radiology. in Nuclear Technology and Radiation Protection. 2018;33(4):375-379.
doi:10.2298/NTRP180730005B .

Božović, Predrag, Ciraj-Bjelac, Olivera, Stanković-Petrović, Jelena S., Aranđić, Danijela, Čeklić, Sandra, "Utilizing Monte Carlo simulations in estimation of occupational eye lens dose based on whole body dosemeter in interventional cardiology and radiology" in Nuclear Technology and Radiation Protection, 33, no. 4 (2018):375-379,
https://doi.org/10.2298/NTRP180730005B . .

TY  - CONF
AU  - Ciraj-Bjelac, Olivera
AU  - Aranđić, Danijela
AU  - Božović, Predrag
AU  - Ćeklić, Sandra
AU  - Stanković-Petrović, Jelena S.
AU  - Kaljević, Jelica
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8280
UR  - https://plus.sr.cobiss.net/opac7/bib/245691404
UR  - http://dzz.org.rs/wp-content/uploads/2013/06/Zbornik_XXIX_Simpozijum_DZZ_SCG_Srebrno_jezero_2.pdf
AB  - Sledeći rezultate epidemioloških studija o efektu jonizujućih zračenja na očno stočivo,
Međunarodna komisija za zaštitu od zračenja revidirala je granicu izlaganja za očno
sočivo, imajući u vidu da u slučaju dugotrajnog izlaganja malim dozama i malim
jačinama doza na radnom mestu, katarakta može nastati na nivou doze daleko manjim
od ranije utvrđenog praga. Ovakve situacije su tipične za profesionalna izlaganja u
interventnoj kardiologiji i radiologiji. Cilj ovog rada je prikaz metodologije za
donošenje odluke o potrebi za individualnim monitringom za očno sočivo i prikaz
rezultata pilot monitoringa u interventnoj kardiologiji pomoću namenskih dozimetara
za očno sočivo kalibrisanim u dozimetrijskoj veličini lični dozni ekvivalent Hp(3).
AB  - Following recent epidemiological evidences on effects of ionizing radiation to the eye
lens, International Commission on Radiological Protection has re-evaluated dose limit
to the lens of the eye, owing that protracted exposure to the relatively small doses and
dose rates may lead to the cataract at dose levels much lower than previously set dose
thresholds. Such satiations are typical for occupational exposure in interventional
cardiology and radiology. Occupational exposure from interventional x-ray procedures
is an area in which increased eye lens exposure may occur. Accurate dosimetry is an
important element to investigate the correlation of observed radiation effects with
radiation dose, to verify the compliance with regulatory dose limits, and to optimize
radiation protection practice. The papers presents the overview of practical methods for
eye lens doses assessment as well as typical occupational eye lens dose levels in
interventional procedures in cardiology and radiology. In addition, a methodology to
assist decision making about need for specific eye lens individual monitoring using a
dedicated passive dosimeters calibrated in terms of Hp(3) is presented in this paper.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 29. симпозијум ДЗЗСЦГ : зборник радова
T1  - Monitoring doze za očno sočivo u interventnoj radiologiji i kardiologiji
T1  - Eye lens monitoring in interventional cardiology and radiology
SP  - 241
EP  - 248
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8280
ER  - 

@conference{
author = "Ciraj-Bjelac, Olivera and Aranđić, Danijela and Božović, Predrag and Ćeklić, Sandra and Stanković-Petrović, Jelena S. and Kaljević, Jelica",
year = "2017",
abstract = "Sledeći rezultate epidemioloških studija o efektu jonizujućih zračenja na očno stočivo,
Međunarodna komisija za zaštitu od zračenja revidirala je granicu izlaganja za očno
sočivo, imajući u vidu da u slučaju dugotrajnog izlaganja malim dozama i malim
jačinama doza na radnom mestu, katarakta može nastati na nivou doze daleko manjim
od ranije utvrđenog praga. Ovakve situacije su tipične za profesionalna izlaganja u
interventnoj kardiologiji i radiologiji. Cilj ovog rada je prikaz metodologije za
donošenje odluke o potrebi za individualnim monitringom za očno sočivo i prikaz
rezultata pilot monitoringa u interventnoj kardiologiji pomoću namenskih dozimetara
za očno sočivo kalibrisanim u dozimetrijskoj veličini lični dozni ekvivalent Hp(3)., Following recent epidemiological evidences on effects of ionizing radiation to the eye
lens, International Commission on Radiological Protection has re-evaluated dose limit
to the lens of the eye, owing that protracted exposure to the relatively small doses and
dose rates may lead to the cataract at dose levels much lower than previously set dose
thresholds. Such satiations are typical for occupational exposure in interventional
cardiology and radiology. Occupational exposure from interventional x-ray procedures
is an area in which increased eye lens exposure may occur. Accurate dosimetry is an
important element to investigate the correlation of observed radiation effects with
radiation dose, to verify the compliance with regulatory dose limits, and to optimize
radiation protection practice. The papers presents the overview of practical methods for
eye lens doses assessment as well as typical occupational eye lens dose levels in
interventional procedures in cardiology and radiology. In addition, a methodology to
assist decision making about need for specific eye lens individual monitoring using a
dedicated passive dosimeters calibrated in terms of Hp(3) is presented in this paper.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "29. симпозијум ДЗЗСЦГ : зборник радова",
title = "Monitoring doze za očno sočivo u interventnoj radiologiji i kardiologiji, Eye lens monitoring in interventional cardiology and radiology",
pages = "241-248",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8280"
}

Ciraj-Bjelac, O., Aranđić, D., Božović, P., Ćeklić, S., Stanković-Petrović, J. S.,& Kaljević, J.. (2017). Monitoring doze za očno sočivo u interventnoj radiologiji i kardiologiji. in 29. симпозијум ДЗЗСЦГ : зборник радова
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 241-248.
https://hdl.handle.net/21.15107/rcub_vinar_8280

Ciraj-Bjelac O, Aranđić D, Božović P, Ćeklić S, Stanković-Petrović JS, Kaljević J. Monitoring doze za očno sočivo u interventnoj radiologiji i kardiologiji. in 29. симпозијум ДЗЗСЦГ : зборник радова. 2017;:241-248.
https://hdl.handle.net/21.15107/rcub_vinar_8280 .

Ciraj-Bjelac, Olivera, Aranđić, Danijela, Božović, Predrag, Ćeklić, Sandra, Stanković-Petrović, Jelena S., Kaljević, Jelica, "Monitoring doze za očno sočivo u interventnoj radiologiji i kardiologiji" in 29. симпозијум ДЗЗСЦГ : зборник радова (2017):241-248,
https://hdl.handle.net/21.15107/rcub_vinar_8280 .

TY  - CONF
AU  - Ćeklić, Sandra
AU  - Ciraj-Bjelac, Olivera
AU  - Aranđić, Danijela
AU  - Stanković-Petrović, Jelena S.
AU  - Božović, Predrag
AU  - Mihailescu Liviu, Cristian
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8288
UR  - https://plus.sr.cobiss.net/opac7/bib/245691404
UR  - http://dzz.org.rs/wp-content/uploads/2013/06/Zbornik_XXIX_Simpozijum_DZZ_SCG_Srebrno_jezero_2.pdf
AB  - U ovom radu prikazani su rezultati ispitivanja mogućeg dizajna sekundarnog etalona za
lični dozni ekvivalent Hp(3) pomoću Monte Karlo simulacija. Simulirana je sferna
jonizaciona komora ugrađena u sferni fantom. Ispitivana je energetska i ugaona
zavisnost i cilj je bio da se postigne što konstantniji odgovor u širokom opsegu energija.
Rezultati pokazuju da se najadekvatniji dizajn postize jonizacionom komorom TK-30
ugrađenom u sferni fantom od polimetil-metakrilata (PMMA) prečnika 15 cm.
Energetski odgovor je u ±10% za opseg energija od (18 do 1250) keV, dok je ugaoni
odgovor u ±20% za upadni ugao u opsegu od 0 do 90º za energetski opseg od (48 do
1250) keV.
AB  - In this paper possible design for secondary standard Hp(3) ionisation chamber was
investigated using Monte Carlo simulations. The simulations were performed for
spherical ionization chamber surrounded by spherical phantom. The goal was to obtain
the more constant energy and angular response in wide energy range in order to get
optimal geometry. The results shown that the most adequate design for secondary
standard Hp(3) was achieved using commercially available TK-30 ionization chamber
manufactured by PTW embedded in spherical polymethyl methacrylate (PMMA)
phantom with diameter 15 cm. The energy response was within ±10% in range of
photon energies from (18 to 1250) keV, while angular response was within ±20% for
angle of incidence α from 0º to 90º for energy range (48 to 1250) keV.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 29. симпозијум ДЗЗСЦГ : зборник радова
T1  - Konstrukcija sekundarnog etalona za veličinu lični dozni ekvivalent Hp(3) pomoću Monte Karlo simulacija
T1  - Design of secondary standard Hp(3) ionisation chamber using Monte Carlo simulations
SP  - 287
EP  - 290
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8288
ER  - 

@conference{
author = "Ćeklić, Sandra and Ciraj-Bjelac, Olivera and Aranđić, Danijela and Stanković-Petrović, Jelena S. and Božović, Predrag and Mihailescu Liviu, Cristian",
year = "2017",
abstract = "U ovom radu prikazani su rezultati ispitivanja mogućeg dizajna sekundarnog etalona za
lični dozni ekvivalent Hp(3) pomoću Monte Karlo simulacija. Simulirana je sferna
jonizaciona komora ugrađena u sferni fantom. Ispitivana je energetska i ugaona
zavisnost i cilj je bio da se postigne što konstantniji odgovor u širokom opsegu energija.
Rezultati pokazuju da se najadekvatniji dizajn postize jonizacionom komorom TK-30
ugrađenom u sferni fantom od polimetil-metakrilata (PMMA) prečnika 15 cm.
Energetski odgovor je u ±10% za opseg energija od (18 do 1250) keV, dok je ugaoni
odgovor u ±20% za upadni ugao u opsegu od 0 do 90º za energetski opseg od (48 do
1250) keV., In this paper possible design for secondary standard Hp(3) ionisation chamber was
investigated using Monte Carlo simulations. The simulations were performed for
spherical ionization chamber surrounded by spherical phantom. The goal was to obtain
the more constant energy and angular response in wide energy range in order to get
optimal geometry. The results shown that the most adequate design for secondary
standard Hp(3) was achieved using commercially available TK-30 ionization chamber
manufactured by PTW embedded in spherical polymethyl methacrylate (PMMA)
phantom with diameter 15 cm. The energy response was within ±10% in range of
photon energies from (18 to 1250) keV, while angular response was within ±20% for
angle of incidence α from 0º to 90º for energy range (48 to 1250) keV.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "29. симпозијум ДЗЗСЦГ : зборник радова",
title = "Konstrukcija sekundarnog etalona za veličinu lični dozni ekvivalent Hp(3) pomoću Monte Karlo simulacija, Design of secondary standard Hp(3) ionisation chamber using Monte Carlo simulations",
pages = "287-290",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8288"
}

Ćeklić, S., Ciraj-Bjelac, O., Aranđić, D., Stanković-Petrović, J. S., Božović, P.,& Mihailescu Liviu, C.. (2017). Konstrukcija sekundarnog etalona za veličinu lični dozni ekvivalent Hp(3) pomoću Monte Karlo simulacija. in 29. симпозијум ДЗЗСЦГ : зборник радова
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 287-290.
https://hdl.handle.net/21.15107/rcub_vinar_8288

Ćeklić S, Ciraj-Bjelac O, Aranđić D, Stanković-Petrović JS, Božović P, Mihailescu Liviu C. Konstrukcija sekundarnog etalona za veličinu lični dozni ekvivalent Hp(3) pomoću Monte Karlo simulacija. in 29. симпозијум ДЗЗСЦГ : зборник радова. 2017;:287-290.
https://hdl.handle.net/21.15107/rcub_vinar_8288 .

Ćeklić, Sandra, Ciraj-Bjelac, Olivera, Aranđić, Danijela, Stanković-Petrović, Jelena S., Božović, Predrag, Mihailescu Liviu, Cristian, "Konstrukcija sekundarnog etalona za veličinu lični dozni ekvivalent Hp(3) pomoću Monte Karlo simulacija" in 29. симпозијум ДЗЗСЦГ : зборник радова (2017):287-290,
https://hdl.handle.net/21.15107/rcub_vinar_8288 .

TY  - CONF
AU  - Kaljević, Jelica
AU  - Božović, Predrag
AU  - Ciraj-Bjelac, Olivera
AU  - Stanković-Petrović, Jelena S.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8289
UR  - https://plus.sr.cobiss.net/opac7/bib/245691404
UR  - http://dzz.org.rs/wp-content/uploads/2013/06/Zbornik_XXIX_Simpozijum_DZZ_SCG_Srebrno_jezero_2.pdf
AB  - Cilj ovog rada je procena efektivnih doza radiološkog osoblja profesionalno izloženih
jonizujućem zračenju u domovima zdravlja u Srbiji. Za procenu doza su primenjene dve
metode: (1) merenje ambijentalnog ekvivalenta doze, H*
(10), korišćenjem jonizacione
komore; i (2) merenje ličnog ekvivalenta doze, Hp(10), korišćenjem termoluminescentnih dozimetara (TLD). Doze su procenjene za radiologe iz devet domova zdravlja koji
rade iz kontrolisane zone zračenja i radiologe iz sedam domova zdravlja koji rade iz
nadgledane zone zračenja. Godišnje doze su date za radiologe i radiološke tehničare za
period od pet uzastopnih godina (2011-2015). Prosečna procenjena godišnja doza ne
prelazi 12 mSv, na osnovu merenja H*
(10), dok je 1,65 mSv maksimalna godišnja doza
izmerena TLD metodom. Dobijeni rezultati pokazuju da doze osoblja ne prelaze
zakonski predviđenu granicu godišnje doze od 20 mSv.
AB  - The aim of this study is to estimate the effective doses to workers occupationally
exposed to ionizing radiation in small health centers in Serbia. To assess doses two
methods were applied: (1) the measurement of the ambient equivalent dose, H*(10)
using ionization chambers routinely utilized during workplace monitoring; and (2) the
measurement of the personal equivalent dose, Hp(10), using thermoluminescent
dosemeters routinely utilized during individual monitoring. Doses were estimated for
radiologist working from controlled and supervised area. Annual doses are given for
for a period of five consecutive years (2011-2015). The average annual dose does not
exceed 12 mSv assessed by the workplace monitoring method, or 1.65 mSv measured by
the individual monitoring method. The results show that estimated doses are well below
annual dose limits of 20 mSv for the occupational exposure.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 29. симпозијум ДЗЗСЦГ : зборник радова
T1  - Procena izlaganja radiološkog osoblja u domovima zdravlja
T1  - Radiology staff dose assessment in primary health centers
SP  - 291
EP  - 296
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8289
ER  - 

@conference{
author = "Kaljević, Jelica and Božović, Predrag and Ciraj-Bjelac, Olivera and Stanković-Petrović, Jelena S.",
year = "2017",
abstract = "Cilj ovog rada je procena efektivnih doza radiološkog osoblja profesionalno izloženih
jonizujućem zračenju u domovima zdravlja u Srbiji. Za procenu doza su primenjene dve
metode: (1) merenje ambijentalnog ekvivalenta doze, H*
(10), korišćenjem jonizacione
komore; i (2) merenje ličnog ekvivalenta doze, Hp(10), korišćenjem termoluminescentnih dozimetara (TLD). Doze su procenjene za radiologe iz devet domova zdravlja koji
rade iz kontrolisane zone zračenja i radiologe iz sedam domova zdravlja koji rade iz
nadgledane zone zračenja. Godišnje doze su date za radiologe i radiološke tehničare za
period od pet uzastopnih godina (2011-2015). Prosečna procenjena godišnja doza ne
prelazi 12 mSv, na osnovu merenja H*
(10), dok je 1,65 mSv maksimalna godišnja doza
izmerena TLD metodom. Dobijeni rezultati pokazuju da doze osoblja ne prelaze
zakonski predviđenu granicu godišnje doze od 20 mSv., The aim of this study is to estimate the effective doses to workers occupationally
exposed to ionizing radiation in small health centers in Serbia. To assess doses two
methods were applied: (1) the measurement of the ambient equivalent dose, H*(10)
using ionization chambers routinely utilized during workplace monitoring; and (2) the
measurement of the personal equivalent dose, Hp(10), using thermoluminescent
dosemeters routinely utilized during individual monitoring. Doses were estimated for
radiologist working from controlled and supervised area. Annual doses are given for
for a period of five consecutive years (2011-2015). The average annual dose does not
exceed 12 mSv assessed by the workplace monitoring method, or 1.65 mSv measured by
the individual monitoring method. The results show that estimated doses are well below
annual dose limits of 20 mSv for the occupational exposure.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "29. симпозијум ДЗЗСЦГ : зборник радова",
title = "Procena izlaganja radiološkog osoblja u domovima zdravlja, Radiology staff dose assessment in primary health centers",
pages = "291-296",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8289"
}

Kaljević, J., Božović, P., Ciraj-Bjelac, O.,& Stanković-Petrović, J. S.. (2017). Procena izlaganja radiološkog osoblja u domovima zdravlja. in 29. симпозијум ДЗЗСЦГ : зборник радова
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 291-296.
https://hdl.handle.net/21.15107/rcub_vinar_8289

Kaljević J, Božović P, Ciraj-Bjelac O, Stanković-Petrović JS. Procena izlaganja radiološkog osoblja u domovima zdravlja. in 29. симпозијум ДЗЗСЦГ : зборник радова. 2017;:291-296.
https://hdl.handle.net/21.15107/rcub_vinar_8289 .

Kaljević, Jelica, Božović, Predrag, Ciraj-Bjelac, Olivera, Stanković-Petrović, Jelena S., "Procena izlaganja radiološkog osoblja u domovima zdravlja" in 29. симпозијум ДЗЗСЦГ : зборник радова (2017):291-296,
https://hdl.handle.net/21.15107/rcub_vinar_8289 .

TY  - CONF
AU  - Božović, Predrag
AU  - Ciraj-Bjelac, Olivera
AU  - Aranđić, Danijela
AU  - Ćeklić, Sandra
AU  - Lazarević, Đorđe R.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8287
UR  - https://plus.sr.cobiss.net/opac7/bib/245691404
UR  - http://dzz.org.rs/wp-content/uploads/2013/06/Zbornik_XXIX_Simpozijum_DZZ_SCG_Srebrno_jezero_2.pdf
AB  - Radijaciona oštećenja nastaju usled izmeštanja atoma materijala pri elastičnom
rasejavanju čestica upadnog zračenja na jezgrima ili zbog nuklearnih reakcija
izazvanih upadnim zračenjem. Broj izmeštanja po atomu (DPA) je veličina kojom se
opisuje radijaciono oštećenje. S obzirom da je neutronsko zračenje naročito efikasno u
izmeštanju atoma, ispitan je uticaj neutrona na sastavne elemente strukturalne zaštite
241Am-Be neutronskog izvora sastavljene od parafina, betona i olova. Proračun DPA je
obavljen na osnovu rezultata simulacija primenom MCNPX prorgamskog paketa.
AB  - Radiation damage in materials results from nuclear collisions and reactions which
produce energetic recoil atoms of the host materials or reaction products. Displacement
per atom (DPA) is used to quantify radiation damage. Since neutrons are particularly
efficient in displacing atoms, their influence on constituent elements of 241Am-Be
neutron source shielding made of paraffin, concrete and lead. DPA was calculated
based on simulations using MCNPX.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 29. симпозијум ДЗЗСЦГ : зборник радова
T1  - Monte Karlo simulacija radijacionih oštećenja u zaštitnim materijalima Am-Be-241 neutronskog izvora
T1  - Monte Carlo simulation of radiation damage in shielding materials of Am-Be-241 neutron source
SP  - 283
EP  - 286
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8287
ER  - 

@conference{
author = "Božović, Predrag and Ciraj-Bjelac, Olivera and Aranđić, Danijela and Ćeklić, Sandra and Lazarević, Đorđe R.",
year = "2017",
abstract = "Radijaciona oštećenja nastaju usled izmeštanja atoma materijala pri elastičnom
rasejavanju čestica upadnog zračenja na jezgrima ili zbog nuklearnih reakcija
izazvanih upadnim zračenjem. Broj izmeštanja po atomu (DPA) je veličina kojom se
opisuje radijaciono oštećenje. S obzirom da je neutronsko zračenje naročito efikasno u
izmeštanju atoma, ispitan je uticaj neutrona na sastavne elemente strukturalne zaštite
241Am-Be neutronskog izvora sastavljene od parafina, betona i olova. Proračun DPA je
obavljen na osnovu rezultata simulacija primenom MCNPX prorgamskog paketa., Radiation damage in materials results from nuclear collisions and reactions which
produce energetic recoil atoms of the host materials or reaction products. Displacement
per atom (DPA) is used to quantify radiation damage. Since neutrons are particularly
efficient in displacing atoms, their influence on constituent elements of 241Am-Be
neutron source shielding made of paraffin, concrete and lead. DPA was calculated
based on simulations using MCNPX.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "29. симпозијум ДЗЗСЦГ : зборник радова",
title = "Monte Karlo simulacija radijacionih oštećenja u zaštitnim materijalima Am-Be-241 neutronskog izvora, Monte Carlo simulation of radiation damage in shielding materials of Am-Be-241 neutron source",
pages = "283-286",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8287"
}

Božović, P., Ciraj-Bjelac, O., Aranđić, D., Ćeklić, S.,& Lazarević, Đ. R.. (2017). Monte Karlo simulacija radijacionih oštećenja u zaštitnim materijalima Am-Be-241 neutronskog izvora. in 29. симпозијум ДЗЗСЦГ : зборник радова
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 283-286.
https://hdl.handle.net/21.15107/rcub_vinar_8287

Božović P, Ciraj-Bjelac O, Aranđić D, Ćeklić S, Lazarević ĐR. Monte Karlo simulacija radijacionih oštećenja u zaštitnim materijalima Am-Be-241 neutronskog izvora. in 29. симпозијум ДЗЗСЦГ : зборник радова. 2017;:283-286.
https://hdl.handle.net/21.15107/rcub_vinar_8287 .

Božović, Predrag, Ciraj-Bjelac, Olivera, Aranđić, Danijela, Ćeklić, Sandra, Lazarević, Đorđe R., "Monte Karlo simulacija radijacionih oštećenja u zaštitnim materijalima Am-Be-241 neutronskog izvora" in 29. симпозијум ДЗЗСЦГ : зборник радова (2017):283-286,
https://hdl.handle.net/21.15107/rcub_vinar_8287 .

TY  - CONF
AU  - Antić, Vojislav
AU  - Ciraj-Bjelac, Olivera
AU  - Selaković, Jovana
AU  - Božović, Predrag
AU  - Aranđić, Danijela
AU  - Pavlović, Siniša
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8281
UR  - https://plus.sr.cobiss.net/opac7/bib/245691404
UR  - http://dzz.org.rs/wp-content/uploads/2013/06/Zbornik_XXIX_Simpozijum_DZZ_SCG_Srebrno_jezero_2.pdf
AB  - Ovaj rad ima za cilj procenu izloženosti očnog sočiva profesionalno izloženih lica
tokom CRT procedura na bazi direktnih merenja aktivnim dozimetrom u Hp(3) doznom
ekvivalentu. Ustanovljena je srednja vrednost doze po intervenciji od 30µSv za
kardiologe, 26 µSv za medicinske tehničare, odnosno 2µSv za radiološke tehničare.
Normalizovane vrednosti Hp(3)/PKA su iznosile 1,2 ± 0,34µSv, 0,98 ± 0,57µSv, odnosno
0,10 ± 0,08, respektivno. Položaj kardiologa, od centralne linije primarnog snopa, je
bio 45-55cm a medicinskog tehničara 80-200cm. Osim pri standardnom AP položaju,
fluoroskopsko praćenje je bilo i u kosoj projekciji, ali u relativno zanemarljivom
vremenu. Osoblje je zaštitne naočare nosilo samo u 15,8% analiziranih procedura (u 6
od ukupno 38). Razmatran je uticaj FT-a, PKA-a, strukturalne zaštite i ličnih zaštitnih
sredstava pri CRT interventnim procedurama, u cilju optimizacije zaštite očnog sočiva
od uticaja jonizujućeg zračenja.
AB  - This study aims to assess the exposure of the staff eye lens during CRT procedures,
based on direct measurements with an active dosimeter in Hp(3) operational quantity.
The mean doses per intervention of 30µSv, 26µSv and 2µSv was established for
cardiologists, medical technicians and radiological technicians, respectively.
Corresponding normalized values of Hp(3)/PKA were 1.2 ± 0.34 µSv, 0.98 ± 0.57 µSv,
and 0.10 ± 0.08. Cardiologists position relative to the center line of the primary beam
was in the range from 45 to 55cm. For medical technician, this distance was 80-200cm.
In addition to the standard AP position, fluoroscopic monitoring was also in oblique
projection, but in a relatively negligible time. Staff wore goggles only in 15.8% of the
analyzed procedures (6 of 38). In order to protect the eye lens from the influence of
ionizing radiation during CRT interventional procedures, the overall impact of the FT,
PKA, structural protection and personal protective equipment were carefully
considered.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 29. симпозијум ДЗЗСЦГ : зборник радова
T1  - Procena doze za očno sočivo za profesionalno izložena lica tokom CRT procedura
T1  - Eye lens dose assessment for occupationally exposed persons during CRT procedures
SP  - 249
EP  - 253
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8281
ER  - 

@conference{
author = "Antić, Vojislav and Ciraj-Bjelac, Olivera and Selaković, Jovana and Božović, Predrag and Aranđić, Danijela and Pavlović, Siniša",
year = "2017",
abstract = "Ovaj rad ima za cilj procenu izloženosti očnog sočiva profesionalno izloženih lica
tokom CRT procedura na bazi direktnih merenja aktivnim dozimetrom u Hp(3) doznom
ekvivalentu. Ustanovljena je srednja vrednost doze po intervenciji od 30µSv za
kardiologe, 26 µSv za medicinske tehničare, odnosno 2µSv za radiološke tehničare.
Normalizovane vrednosti Hp(3)/PKA su iznosile 1,2 ± 0,34µSv, 0,98 ± 0,57µSv, odnosno
0,10 ± 0,08, respektivno. Položaj kardiologa, od centralne linije primarnog snopa, je
bio 45-55cm a medicinskog tehničara 80-200cm. Osim pri standardnom AP položaju,
fluoroskopsko praćenje je bilo i u kosoj projekciji, ali u relativno zanemarljivom
vremenu. Osoblje je zaštitne naočare nosilo samo u 15,8% analiziranih procedura (u 6
od ukupno 38). Razmatran je uticaj FT-a, PKA-a, strukturalne zaštite i ličnih zaštitnih
sredstava pri CRT interventnim procedurama, u cilju optimizacije zaštite očnog sočiva
od uticaja jonizujućeg zračenja., This study aims to assess the exposure of the staff eye lens during CRT procedures,
based on direct measurements with an active dosimeter in Hp(3) operational quantity.
The mean doses per intervention of 30µSv, 26µSv and 2µSv was established for
cardiologists, medical technicians and radiological technicians, respectively.
Corresponding normalized values of Hp(3)/PKA were 1.2 ± 0.34 µSv, 0.98 ± 0.57 µSv,
and 0.10 ± 0.08. Cardiologists position relative to the center line of the primary beam
was in the range from 45 to 55cm. For medical technician, this distance was 80-200cm.
In addition to the standard AP position, fluoroscopic monitoring was also in oblique
projection, but in a relatively negligible time. Staff wore goggles only in 15.8% of the
analyzed procedures (6 of 38). In order to protect the eye lens from the influence of
ionizing radiation during CRT interventional procedures, the overall impact of the FT,
PKA, structural protection and personal protective equipment were carefully
considered.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "29. симпозијум ДЗЗСЦГ : зборник радова",
title = "Procena doze za očno sočivo za profesionalno izložena lica tokom CRT procedura, Eye lens dose assessment for occupationally exposed persons during CRT procedures",
pages = "249-253",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8281"
}

Antić, V., Ciraj-Bjelac, O., Selaković, J., Božović, P., Aranđić, D.,& Pavlović, S.. (2017). Procena doze za očno sočivo za profesionalno izložena lica tokom CRT procedura. in 29. симпозијум ДЗЗСЦГ : зборник радова
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 249-253.
https://hdl.handle.net/21.15107/rcub_vinar_8281

Antić V, Ciraj-Bjelac O, Selaković J, Božović P, Aranđić D, Pavlović S. Procena doze za očno sočivo za profesionalno izložena lica tokom CRT procedura. in 29. симпозијум ДЗЗСЦГ : зборник радова. 2017;:249-253.
https://hdl.handle.net/21.15107/rcub_vinar_8281 .

Antić, Vojislav, Ciraj-Bjelac, Olivera, Selaković, Jovana, Božović, Predrag, Aranđić, Danijela, Pavlović, Siniša, "Procena doze za očno sočivo za profesionalno izložena lica tokom CRT procedura" in 29. симпозијум ДЗЗСЦГ : зборник радова (2017):249-253,
https://hdl.handle.net/21.15107/rcub_vinar_8281 .

TY  - CONF
AU  - Rafajlović, Stefan
AU  - Aranđić, Danijela
AU  - Božović, Predrag
AU  - Ćeklić, Sandra
AU  - Lazarević, Đorđe R.
AU  - Ciraj-Bjelac, Olivera
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7167
AB  - The purpose of this study is to investigate the radiation dose and technical image quality in mammography in Serbia after two years of implementation of the breast screening programme. A total of 186 mammography units, including Full-Field Digital Mammography (FFDM), Computed Radiography (CR) and Screen-Film Mammography (SFM) units were used in the patient dose and image quality assessment. Patient dose, in terms of Mean Glandular Dose (MGD), was assessed for the standard breast, while image quality was evaluated in terms of spatial resolution, threshold contrast visibility and Contrast to Noise Ratio (CNR) for CR and FFDM units. The mean MGD assessed was (1.8 +/- 0.94) mGy, (1.3 +/- 0.51) and (1.7 +/- 0.64) for CR, FFDM and SFM, respectively. Spatial resolution was better than 12 lp/mm only for 3/186 (1.6%) units. In 34/186 (1896) units, spatial resolution was less than 5 lp/mm. Threshold contrast visibility was better than 1.2 in 41/186 (22%). Mean CNR for CR and FFDM units was 5.2 2.2. Following the initial implementation at the beginning of the population-based breast cancer screening campaign, it is essential to establish an effective system of regular and periodic Quality Control (QC) tests and to ensure that high-quality mammograms with minimal possible radiation dose to population are included in the screening.
C3  - RAD Conference Proceedings
T1  - Mammography in Serbia: Image Quality and Radiation Dose
SP  - 29
EP  - 32
DO  - 10.21175/RadProc.2016.08
ER  - 

@conference{
author = "Rafajlović, Stefan and Aranđić, Danijela and Božović, Predrag and Ćeklić, Sandra and Lazarević, Đorđe R. and Ciraj-Bjelac, Olivera",
year = "2016",
abstract = "The purpose of this study is to investigate the radiation dose and technical image quality in mammography in Serbia after two years of implementation of the breast screening programme. A total of 186 mammography units, including Full-Field Digital Mammography (FFDM), Computed Radiography (CR) and Screen-Film Mammography (SFM) units were used in the patient dose and image quality assessment. Patient dose, in terms of Mean Glandular Dose (MGD), was assessed for the standard breast, while image quality was evaluated in terms of spatial resolution, threshold contrast visibility and Contrast to Noise Ratio (CNR) for CR and FFDM units. The mean MGD assessed was (1.8 +/- 0.94) mGy, (1.3 +/- 0.51) and (1.7 +/- 0.64) for CR, FFDM and SFM, respectively. Spatial resolution was better than 12 lp/mm only for 3/186 (1.6%) units. In 34/186 (1896) units, spatial resolution was less than 5 lp/mm. Threshold contrast visibility was better than 1.2 in 41/186 (22%). Mean CNR for CR and FFDM units was 5.2 2.2. Following the initial implementation at the beginning of the population-based breast cancer screening campaign, it is essential to establish an effective system of regular and periodic Quality Control (QC) tests and to ensure that high-quality mammograms with minimal possible radiation dose to population are included in the screening.",
journal = "RAD Conference Proceedings",
title = "Mammography in Serbia: Image Quality and Radiation Dose",
pages = "29-32",
doi = "10.21175/RadProc.2016.08"
}

Rafajlović, S., Aranđić, D., Božović, P., Ćeklić, S., Lazarević, Đ. R.,& Ciraj-Bjelac, O.. (2016). Mammography in Serbia: Image Quality and Radiation Dose. in RAD Conference Proceedings, 29-32.
https://doi.org/10.21175/RadProc.2016.08

Rafajlović S, Aranđić D, Božović P, Ćeklić S, Lazarević ĐR, Ciraj-Bjelac O. Mammography in Serbia: Image Quality and Radiation Dose. in RAD Conference Proceedings. 2016;:29-32.
doi:10.21175/RadProc.2016.08 .

Rafajlović, Stefan, Aranđić, Danijela, Božović, Predrag, Ćeklić, Sandra, Lazarević, Đorđe R., Ciraj-Bjelac, Olivera, "Mammography in Serbia: Image Quality and Radiation Dose" in RAD Conference Proceedings (2016):29-32,
https://doi.org/10.21175/RadProc.2016.08 . .