TY  - JOUR
AU  - Živanović, Miloš
AU  - Petrović, Borislava
AU  - Radovanlija, Nevena
AU  - Kržanović, Nikola
AU  - Jonić, Miloš
AU  - Marjanović, Milana
AU  - Komatina, Ivana
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12443
AB  - Source strength measurements are of critical importance for brachytherapy and are often performed in hospitals using well-type chambers. Quality assurance and quality control procedures should be implemented, but that may prove difficult in some hospitals due to the lack of equipment or metrological support. A study was conducted to investigate the status of the measurement equipment in Serbian hospitals and to organize an intercomparison campaign using a hospital 192Ir source. All the hospitals were able to measure the source strength with the required accuracy, but the quality assurance can be improved. Two hospitals performed stability checks, which were evaluated. Uncertainty budget was created during the exercise and is presented in this paper. The described methodology can be used to quickly assess the performance of brachytherapy centers, and can be easily adapted to calibration procedure.
T2  - Applied Radiation and Isotopes
T1  - Intercomparison and constancy check of brachytherapy well-type chambers as a means to improve the quality of measurements in Serbia
VL  - 205
SP  - 111160
DO  - 10.1016/j.apradiso.2023.111160
ER  - 

@article{
author = "Živanović, Miloš and Petrović, Borislava and Radovanlija, Nevena and Kržanović, Nikola and Jonić, Miloš and Marjanović, Milana and Komatina, Ivana",
year = "2024",
abstract = "Source strength measurements are of critical importance for brachytherapy and are often performed in hospitals using well-type chambers. Quality assurance and quality control procedures should be implemented, but that may prove difficult in some hospitals due to the lack of equipment or metrological support. A study was conducted to investigate the status of the measurement equipment in Serbian hospitals and to organize an intercomparison campaign using a hospital 192Ir source. All the hospitals were able to measure the source strength with the required accuracy, but the quality assurance can be improved. Two hospitals performed stability checks, which were evaluated. Uncertainty budget was created during the exercise and is presented in this paper. The described methodology can be used to quickly assess the performance of brachytherapy centers, and can be easily adapted to calibration procedure.",
journal = "Applied Radiation and Isotopes",
title = "Intercomparison and constancy check of brachytherapy well-type chambers as a means to improve the quality of measurements in Serbia",
volume = "205",
pages = "111160",
doi = "10.1016/j.apradiso.2023.111160"
}

Živanović, M., Petrović, B., Radovanlija, N., Kržanović, N., Jonić, M., Marjanović, M.,& Komatina, I.. (2024). Intercomparison and constancy check of brachytherapy well-type chambers as a means to improve the quality of measurements in Serbia. in Applied Radiation and Isotopes, 205, 111160.
https://doi.org/10.1016/j.apradiso.2023.111160

Živanović M, Petrović B, Radovanlija N, Kržanović N, Jonić M, Marjanović M, Komatina I. Intercomparison and constancy check of brachytherapy well-type chambers as a means to improve the quality of measurements in Serbia. in Applied Radiation and Isotopes. 2024;205:111160.
doi:10.1016/j.apradiso.2023.111160 .

Živanović, Miloš, Petrović, Borislava, Radovanlija, Nevena, Kržanović, Nikola, Jonić, Miloš, Marjanović, Milana, Komatina, Ivana, "Intercomparison and constancy check of brachytherapy well-type chambers as a means to improve the quality of measurements in Serbia" in Applied Radiation and Isotopes, 205 (2024):111160,
https://doi.org/10.1016/j.apradiso.2023.111160 . .

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  - Kržanović, Nikola
AU  - Stanković Petrović, Jelena
AU  - Živanović, Miloš
AU  - Krajinović, Marko
AU  - Topalović, Dušan
AU  - Kojić, Andrea
AU  - Božović, Predrag
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11908
AB  - Accuracy of measurement in individual dosimetry monitoring service is achieved by performing calibration of dosemeters, ensuring that the measured values are traceable to the primary standard for the quantity of interest. Even though a dosemeter can exhibit remarkable performance in the reference calibration radiation field (e.g. 137Cs), its performance can greatly differ under certain conditions. Effects of different influence quantities need to be examined to ensure that the dosemeters are reliable for use in a specific ionizing radiation practice. The most significant radiation characteristic influence quantities are the radiation energy, angle of incidence and dose (rate). International standards issued by IEC and ISO define radiation conditions and procedures for dosemeter type testing under effects of different radiation, environmental and mechanical influence quantities. Dosemeter performance is expressed in terms of relative response and is evaluated by comparing with defined limits of variation, taking into account the measurement uncertainty, according to [IEC 62387:2020, IEC, 2020]. A passive dosimetry system based on LiF:Mg,Ti thermoluminescent dosemeters (TLD) was tested for the effects of photon energy and angle of incidence in two dosemeter orientations, horizontal (up/down) and vertical (left/right), for the measurement of personal dose equivalent (Hp(10) and Hp(0.07)). The dosemeters were read out on the Harshaw TLD™ Model 6600 Plus Automated Reader (Thermo Fisher Scientific, USA), calibrated in 137Cs reference field. Low-energy X-ray reference field N-40, established according to ISO 4037-1:2019 [ISO 4037, ISO, 2019] and ±45°, ±60° angles of incidence were used to examine the passive dosimetry system performance. Limits of variation from -29 % to +67 %, defined in [IEC 62387:2020, IEC, 2020] for energy and angular relative response, were used for performance evaluation. The overresponses for Hp(10) for 45° and 60° were (51 – 62) % and (76 – 88) %, respectively. The results for Hp(0.07) for 45° and 60° were (66 – 69) % and (79 – 95) %, respectively. Thus, for both quantities it was observed that the criteria are met for the angle of ±45°, while for ±60° neither comply with the standard, for both dosemeter orientations, when uncertainties are taken into account. This shows that tested TLD system has high overresponse in low energy photon fields when larger angle of incidence values is encountered. The response could be improved if dosemeters are calibrated using appropriate reference calibration field or if different dosemeter holder is employed.
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  - LiF:Mg,Ti TLD angular dependence evaluation at low energy incident radiation
SP  - 60
EP  - 60
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11908
ER  - 

@conference{
author = "Kržanović, Nikola and Stanković Petrović, Jelena and Živanović, Miloš and Krajinović, Marko and Topalović, Dušan and Kojić, Andrea and Božović, Predrag",
year = "2023",
abstract = "Accuracy of measurement in individual dosimetry monitoring service is achieved by performing calibration of dosemeters, ensuring that the measured values are traceable to the primary standard for the quantity of interest. Even though a dosemeter can exhibit remarkable performance in the reference calibration radiation field (e.g. 137Cs), its performance can greatly differ under certain conditions. Effects of different influence quantities need to be examined to ensure that the dosemeters are reliable for use in a specific ionizing radiation practice. The most significant radiation characteristic influence quantities are the radiation energy, angle of incidence and dose (rate). International standards issued by IEC and ISO define radiation conditions and procedures for dosemeter type testing under effects of different radiation, environmental and mechanical influence quantities. Dosemeter performance is expressed in terms of relative response and is evaluated by comparing with defined limits of variation, taking into account the measurement uncertainty, according to [IEC 62387:2020, IEC, 2020]. A passive dosimetry system based on LiF:Mg,Ti thermoluminescent dosemeters (TLD) was tested for the effects of photon energy and angle of incidence in two dosemeter orientations, horizontal (up/down) and vertical (left/right), for the measurement of personal dose equivalent (Hp(10) and Hp(0.07)). The dosemeters were read out on the Harshaw TLD™ Model 6600 Plus Automated Reader (Thermo Fisher Scientific, USA), calibrated in 137Cs reference field. Low-energy X-ray reference field N-40, established according to ISO 4037-1:2019 [ISO 4037, ISO, 2019] and ±45°, ±60° angles of incidence were used to examine the passive dosimetry system performance. Limits of variation from -29 % to +67 %, defined in [IEC 62387:2020, IEC, 2020] for energy and angular relative response, were used for performance evaluation. The overresponses for Hp(10) for 45° and 60° were (51 – 62) % and (76 – 88) %, respectively. The results for Hp(0.07) for 45° and 60° were (66 – 69) % and (79 – 95) %, respectively. Thus, for both quantities it was observed that the criteria are met for the angle of ±45°, while for ±60° neither comply with the standard, for both dosemeter orientations, when uncertainties are taken into account. This shows that tested TLD system has high overresponse in low energy photon fields when larger angle of incidence values is encountered. The response could be improved if dosemeters are calibrated using appropriate reference calibration field or if different dosemeter holder is employed.",
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 = "LiF:Mg,Ti TLD angular dependence evaluation at low energy incident radiation",
pages = "60-60",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11908"
}

Kržanović, N., Stanković Petrović, J., Živanović, M., Krajinović, M., Topalović, D., Kojić, A.,& Božović, P.. (2023). LiF:Mg,Ti TLD angular dependence evaluation at low energy incident radiation. in RAP 2023 : International conference on radiation applications in Physics, Chemistry, Biology, Medical Sciences, Engineering and Environmental Sciences; Book of abstracts
Niš : Sievert Association., 60-60.
https://hdl.handle.net/21.15107/rcub_vinar_11908

Kržanović N, Stanković Petrović J, Živanović M, Krajinović M, Topalović D, Kojić A, Božović P. LiF:Mg,Ti TLD angular dependence evaluation at low energy incident radiation. in RAP 2023 : International conference on radiation applications in Physics, Chemistry, Biology, Medical Sciences, Engineering and Environmental Sciences; Book of abstracts. 2023;:60-60.
https://hdl.handle.net/21.15107/rcub_vinar_11908 .

Kržanović, Nikola, Stanković Petrović, Jelena, Živanović, Miloš, Krajinović, Marko, Topalović, Dušan, Kojić, Andrea, Božović, Predrag, "LiF:Mg,Ti TLD angular dependence evaluation at low energy incident radiation" in RAP 2023 : International conference on radiation applications in Physics, Chemistry, Biology, Medical Sciences, Engineering and Environmental Sciences; Book of abstracts (2023):60-60,
https://hdl.handle.net/21.15107/rcub_vinar_11908 .

TY  - CONF
AU  - Kojić, Andrea
AU  - Kržanović, Nikola
AU  - Živanović, Miloš
AU  - Božović, Predrag
AU  - Stanković Petrović, Jelena
AU  - Komatina, Ivana
AU  - Vlahović, Jelena
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11909
AB  - Ionization chambers and solid state detectors incorporated into multimeters are often used for quality control in different modalities of medical imaging and diagnostic radiology. The equipment to be used in the routine QC procedures needs to be calibrated under well-known radiation conditions (known as radiation qualities) defined by the international standards. International standards IEC 61267:2005 [IEC 62167, IEC 2005] and IAEA TRS 457:2007 [IAEA TRS 457, IAEA 2007] cover general radiography and fluoroscopy radiation qualities (abbreviated as RQR and RQA series, in the voltage range from 40 kV to 150 kV), and computerized tomography radiation qualities (abbreviated as RQT series, in the voltage range from 100 kV to 150 kV), among other. In the field of mammography reference radiation fields are defined for molybdenum anode/filtration combination (Mo/Mo, abbreviated as RQR-M series, in the voltage range from 25 kV to 35 kV). Since Mo/Mo mammography units are widespread and available at hospitals they have been included in the standard [IEC 62167, IEC 2005]. Even so, Secondary Standard Dosimetry Laboratories (SSDLs) that are performing calibrations of QC dosimeters for end-users, rarely have availability of such anode/filtration combination under reference laboratory conditions. SSDLs most often employ X-ray generators with W/Al combinations. Additionally, nowadays many different combinations of anode/filtration are present in mammography units of different manufacturers that are commonly used in the hospitals. Multimeters are often sensitive to spectral changes caused by different anode/filter combination, so it is doubtful that the traceability established for one anode/filter combination can be used to measure doses for another combination. Measurements with different solid state detectors were performed under laboratory conditions with W/Al radiation qualities established in the SSDL. In the future, research will be expanded to clinical conditions in radiation fields produced by mammography units which employ Mo/Mo, Mo/Rh, Rh/Rh, W/Rh and W/Ag. Dosimeter response will be evaluated based on the dependency of 1st HVL which is correlated to radiation output of the X-ray generator (the incident photon spectra).
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  - Solid state detector energy response in W/Al mammography radiation quality series
SP  - 30
EP  - 30
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11909
ER  - 

@conference{
author = "Kojić, Andrea and Kržanović, Nikola and Živanović, Miloš and Božović, Predrag and Stanković Petrović, Jelena and Komatina, Ivana and Vlahović, Jelena",
year = "2023",
abstract = "Ionization chambers and solid state detectors incorporated into multimeters are often used for quality control in different modalities of medical imaging and diagnostic radiology. The equipment to be used in the routine QC procedures needs to be calibrated under well-known radiation conditions (known as radiation qualities) defined by the international standards. International standards IEC 61267:2005 [IEC 62167, IEC 2005] and IAEA TRS 457:2007 [IAEA TRS 457, IAEA 2007] cover general radiography and fluoroscopy radiation qualities (abbreviated as RQR and RQA series, in the voltage range from 40 kV to 150 kV), and computerized tomography radiation qualities (abbreviated as RQT series, in the voltage range from 100 kV to 150 kV), among other. In the field of mammography reference radiation fields are defined for molybdenum anode/filtration combination (Mo/Mo, abbreviated as RQR-M series, in the voltage range from 25 kV to 35 kV). Since Mo/Mo mammography units are widespread and available at hospitals they have been included in the standard [IEC 62167, IEC 2005]. Even so, Secondary Standard Dosimetry Laboratories (SSDLs) that are performing calibrations of QC dosimeters for end-users, rarely have availability of such anode/filtration combination under reference laboratory conditions. SSDLs most often employ X-ray generators with W/Al combinations. Additionally, nowadays many different combinations of anode/filtration are present in mammography units of different manufacturers that are commonly used in the hospitals. Multimeters are often sensitive to spectral changes caused by different anode/filter combination, so it is doubtful that the traceability established for one anode/filter combination can be used to measure doses for another combination. Measurements with different solid state detectors were performed under laboratory conditions with W/Al radiation qualities established in the SSDL. In the future, research will be expanded to clinical conditions in radiation fields produced by mammography units which employ Mo/Mo, Mo/Rh, Rh/Rh, W/Rh and W/Ag. Dosimeter response will be evaluated based on the dependency of 1st HVL which is correlated to radiation output of the X-ray generator (the incident photon spectra).",
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 = "Solid state detector energy response in W/Al mammography radiation quality series",
pages = "30-30",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11909"
}

Kojić, A., Kržanović, N., Živanović, M., Božović, P., Stanković Petrović, J., Komatina, I.,& Vlahović, J.. (2023). Solid state detector energy response in W/Al mammography radiation quality series. in RAP 2023 : International conference on radiation applications in Physics, Chemistry, Biology, Medical Sciences, Engineering and Environmental Sciences; Book of abstracts
Niš : Sievert Association., 30-30.
https://hdl.handle.net/21.15107/rcub_vinar_11909

Kojić A, Kržanović N, Živanović M, Božović P, Stanković Petrović J, Komatina I, Vlahović J. Solid state detector energy response in W/Al mammography radiation quality series. in RAP 2023 : International conference on radiation applications in Physics, Chemistry, Biology, Medical Sciences, Engineering and Environmental Sciences; Book of abstracts. 2023;:30-30.
https://hdl.handle.net/21.15107/rcub_vinar_11909 .

Kojić, Andrea, Kržanović, Nikola, Živanović, Miloš, Božović, Predrag, Stanković Petrović, Jelena, Komatina, Ivana, Vlahović, Jelena, "Solid state detector energy response in W/Al mammography radiation quality series" in RAP 2023 : International conference on radiation applications in Physics, Chemistry, Biology, Medical Sciences, Engineering and Environmental Sciences; Book of abstracts (2023):30-30,
https://hdl.handle.net/21.15107/rcub_vinar_11909 .

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  - CONF
AU  - Kojić, Andrea
AU  - Kržanović, Nikola
AU  - Komatina, Ivana
AU  - Živanović, Miloš
AU  - Stanković Petrović, Jelena
AU  - Vlahović, Jelena
AU  - Božović, Predrag
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11927
AB  - Clinical mammography units utilize compression paddle for breast compression during exposure. When compression paddle is released, it returns to a default position which varies between different mammography units. This default position is commonly used in quality control procedures. Guidelines for quality control testing in mammography propose measuring the half-value layer (HVL) by placing added filtration on compression paddle while multimeter is positioned on the mammography unit's detector. The influence of compression paddle positioning on HVL measurements was studied under laboratory conditions. The difference in HVL values with and without the presence of the plate is not insignificant, the positioning of the plate also has a significant impact on the measurements.
AB  - Kliničke mamografske jedinice sadrže kompresione papučice koje se koriste u svrhe kompresije dojke prilikom ekspozicije. Nakon oslobađanja kompresione papučice ona se vraća u uobičajeni položaj koji se razlikuje među mamografskim jedinicama. Ova pozicija se najčešće koristi tokom testiranja pri kontroli kvaliteta. Protokoli za kontrolu kvaliteta u mamografiji predlažu merenje debljine poluslabljenja (HVL) postavljanjem dodatnih filtera na kompresionu papučicu dok se multimetar postavlja na detektor mamografske jedinice. Uticaj pozicioniranja kompresione papučice na HVL merenja je ispitan u laboratorijskim uslovima. Razlika u vrednostima za HVL sa i bez prisustva PMMA ploče nije zanemarljiva, dakle pozicioniranje ploče ima značajan uticaj na izmerene vrednosti.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 32. simpozijum DZZSCG : zbornik radova
T1  - The influence of compression paddle positioning on HVL measurements in mammography
T1  - Uticaj pozicije kompresione papučice na HVL merenja u mammografiji
SP  - 382
EP  - 386
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11927
ER  - 

@conference{
author = "Kojić, Andrea and Kržanović, Nikola and Komatina, Ivana and Živanović, Miloš and Stanković Petrović, Jelena and Vlahović, Jelena and Božović, Predrag",
year = "2023",
abstract = "Clinical mammography units utilize compression paddle for breast compression during exposure. When compression paddle is released, it returns to a default position which varies between different mammography units. This default position is commonly used in quality control procedures. Guidelines for quality control testing in mammography propose measuring the half-value layer (HVL) by placing added filtration on compression paddle while multimeter is positioned on the mammography unit's detector. The influence of compression paddle positioning on HVL measurements was studied under laboratory conditions. The difference in HVL values with and without the presence of the plate is not insignificant, the positioning of the plate also has a significant impact on the measurements., Kliničke mamografske jedinice sadrže kompresione papučice koje se koriste u svrhe kompresije dojke prilikom ekspozicije. Nakon oslobađanja kompresione papučice ona se vraća u uobičajeni položaj koji se razlikuje među mamografskim jedinicama. Ova pozicija se najčešće koristi tokom testiranja pri kontroli kvaliteta. Protokoli za kontrolu kvaliteta u mamografiji predlažu merenje debljine poluslabljenja (HVL) postavljanjem dodatnih filtera na kompresionu papučicu dok se multimetar postavlja na detektor mamografske jedinice. Uticaj pozicioniranja kompresione papučice na HVL merenja je ispitan u laboratorijskim uslovima. Razlika u vrednostima za HVL sa i bez prisustva PMMA ploče nije zanemarljiva, dakle pozicioniranje ploče ima značajan uticaj na izmerene vrednosti.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "32. simpozijum DZZSCG : zbornik radova",
title = "The influence of compression paddle positioning on HVL measurements in mammography, Uticaj pozicije kompresione papučice na HVL merenja u mammografiji",
pages = "382-386",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11927"
}

Kojić, A., Kržanović, N., Komatina, I., Živanović, M., Stanković Petrović, J., Vlahović, J.,& Božović, P.. (2023). The influence of compression paddle positioning on HVL measurements in mammography. in 32. simpozijum DZZSCG : zbornik radova
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 382-386.
https://hdl.handle.net/21.15107/rcub_vinar_11927

Kojić A, Kržanović N, Komatina I, Živanović M, Stanković Petrović J, Vlahović J, Božović P. The influence of compression paddle positioning on HVL measurements in mammography. in 32. simpozijum DZZSCG : zbornik radova. 2023;:382-386.
https://hdl.handle.net/21.15107/rcub_vinar_11927 .

Kojić, Andrea, Kržanović, Nikola, Komatina, Ivana, Živanović, Miloš, Stanković Petrović, Jelena, Vlahović, Jelena, Božović, Predrag, "The influence of compression paddle positioning on HVL measurements in mammography" in 32. simpozijum DZZSCG : zbornik radova (2023):382-386,
https://hdl.handle.net/21.15107/rcub_vinar_11927 .

TY  - CONF
AU  - Božović, Predrag
AU  - Kojić, Andrea
AU  - Kržanović, Nikola
AU  - Topalović, Dušan
AU  - Stanković Petrović, Jelena
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11928
AB  - The aim of this work is to examine the accuracy of the delivered dose inside the blood irradiator using TL dosimeters. The TL dosimeters were placed behind the lead plate and were irradiated with absorbed dose values ranging from 50 mGy to 5 Gy in the 60Co reference radiation field. The deviations of the TL dosimeter readings in relation to the delivered values of the absorbed dose range from 7.8 % to 19.6 % with satisfactory linearity over the entire range of delivered doses (R=0.997). Monte Carlo simulations were used to determine the conversion coefficients for the application of this method in the 137Cs radiation field for devices that work with this type of radiation source.
AB  - Cilj ovog rada je ispitivanje tačnosti isporučene doze unutar ozračivača krvi koristeći TL dozimetre. TL dozimetri su postavljeni iza olovne ploče i ozračeni su vrednostima apsorbovane doze u opsegu od 50 mGy do 5 Gy u referentnom polju zračenja 60Co. Odstupanja očitavanja TL dozimetara u odnosu na isporučene vrednosti apsorbovane doze su u opsegu od 7.8% do 19.6% uz zadovoljavajuću linearnost na celom opsegu isporučenih doza (R=0.997). Monte Karlo simulacijama su određeni konverzioni koeficijenti za primenu ovog metoda i u polju zračenja 137Cs za uređaje koji rade sa ovom vrstom izvora zračenja.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 32. simpozijum DZZSCG : zbornik radova
T1  - Application of TL Dosimeters for testing the accuracy of delivered dose in blood irradiator
T1  - Primena TL dozimetara za ispitivanje tačnosti isporučene doze u ozračivaču krvi
SP  - 387
EP  - 393
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11928
ER  - 

@conference{
author = "Božović, Predrag and Kojić, Andrea and Kržanović, Nikola and Topalović, Dušan and Stanković Petrović, Jelena",
year = "2023",
abstract = "The aim of this work is to examine the accuracy of the delivered dose inside the blood irradiator using TL dosimeters. The TL dosimeters were placed behind the lead plate and were irradiated with absorbed dose values ranging from 50 mGy to 5 Gy in the 60Co reference radiation field. The deviations of the TL dosimeter readings in relation to the delivered values of the absorbed dose range from 7.8 % to 19.6 % with satisfactory linearity over the entire range of delivered doses (R=0.997). Monte Carlo simulations were used to determine the conversion coefficients for the application of this method in the 137Cs radiation field for devices that work with this type of radiation source., Cilj ovog rada je ispitivanje tačnosti isporučene doze unutar ozračivača krvi koristeći TL dozimetre. TL dozimetri su postavljeni iza olovne ploče i ozračeni su vrednostima apsorbovane doze u opsegu od 50 mGy do 5 Gy u referentnom polju zračenja 60Co. Odstupanja očitavanja TL dozimetara u odnosu na isporučene vrednosti apsorbovane doze su u opsegu od 7.8% do 19.6% uz zadovoljavajuću linearnost na celom opsegu isporučenih doza (R=0.997). Monte Karlo simulacijama su određeni konverzioni koeficijenti za primenu ovog metoda i u polju zračenja 137Cs za uređaje koji rade sa ovom vrstom izvora zračenja.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "32. simpozijum DZZSCG : zbornik radova",
title = "Application of TL Dosimeters for testing the accuracy of delivered dose in blood irradiator, Primena TL dozimetara za ispitivanje tačnosti isporučene doze u ozračivaču krvi",
pages = "387-393",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11928"
}

Božović, P., Kojić, A., Kržanović, N., Topalović, D.,& Stanković Petrović, J.. (2023). Application of TL Dosimeters for testing the accuracy of delivered dose in blood irradiator. in 32. simpozijum DZZSCG : zbornik radova
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 387-393.
https://hdl.handle.net/21.15107/rcub_vinar_11928

Božović P, Kojić A, Kržanović N, Topalović D, Stanković Petrović J. Application of TL Dosimeters for testing the accuracy of delivered dose in blood irradiator. in 32. simpozijum DZZSCG : zbornik radova. 2023;:387-393.
https://hdl.handle.net/21.15107/rcub_vinar_11928 .

Božović, Predrag, Kojić, Andrea, Kržanović, Nikola, Topalović, Dušan, Stanković Petrović, Jelena, "Application of TL Dosimeters for testing the accuracy of delivered dose in blood irradiator" in 32. simpozijum DZZSCG : zbornik radova (2023):387-393,
https://hdl.handle.net/21.15107/rcub_vinar_11928 .

TY  - JOUR
AU  - Živanović, Miloš
AU  - Hupe, Oliver
AU  - Zutz, Hayo
AU  - Šabeta, Amra
AU  - Sandtner, Stanislav
AU  - Kržanović, Nikola
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11371
AB  - Supplementary comparison in terms of the ambient dose equivalent/rate was organized within EURAMET as a part of the DOSEtrace project, between 13 national metrology institutes and designated institutes. Calibration coefficients were compared for a secondary standard ionisation chamber for 3 X-ray and 2 γ-ray radiation qualities used in the field of radiation protection. Radiation qualities were established according to ISO 4037-1. Measurements were performed between 2019 and 2021. For the purpose of this comparison, it was considered that the reported uncertainty was confirmed if the relative deviation from the comparison reference value was smaller than or equal to the associated uncertainty. All the reported results by all the partners satisfied this criterium. Three participants were not able to perform calibrations in all mandatory radiation qualities, due to technical problems. The results are published in the Key Comparison Data Base (KCDB) of the BIPM as supplementary comparison EURAMET.RI(I)-S18. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/. The final report has been peer-reviewed and approved for publication by the CCRI, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA). © 2023 BIPM & IOP Publishing Ltd.
T2  - Metrologia
T1  - EURAMET DOSEtrace supplementary comparison in terms of the ambient dose equivalent/rate for photon radiation (EURAMET.RI(I)-S18)
VL  - 60
IS  - 1A
SP  - 06017
DO  - 10.1088/0026-1394/60/1A/06017
ER  - 

@article{
author = "Živanović, Miloš and Hupe, Oliver and Zutz, Hayo and Šabeta, Amra and Sandtner, Stanislav and Kržanović, Nikola",
year = "2023",
abstract = "Supplementary comparison in terms of the ambient dose equivalent/rate was organized within EURAMET as a part of the DOSEtrace project, between 13 national metrology institutes and designated institutes. Calibration coefficients were compared for a secondary standard ionisation chamber for 3 X-ray and 2 γ-ray radiation qualities used in the field of radiation protection. Radiation qualities were established according to ISO 4037-1. Measurements were performed between 2019 and 2021. For the purpose of this comparison, it was considered that the reported uncertainty was confirmed if the relative deviation from the comparison reference value was smaller than or equal to the associated uncertainty. All the reported results by all the partners satisfied this criterium. Three participants were not able to perform calibrations in all mandatory radiation qualities, due to technical problems. The results are published in the Key Comparison Data Base (KCDB) of the BIPM as supplementary comparison EURAMET.RI(I)-S18. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/. The final report has been peer-reviewed and approved for publication by the CCRI, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA). © 2023 BIPM & IOP Publishing Ltd.",
journal = "Metrologia",
title = "EURAMET DOSEtrace supplementary comparison in terms of the ambient dose equivalent/rate for photon radiation (EURAMET.RI(I)-S18)",
volume = "60",
number = "1A",
pages = "06017",
doi = "10.1088/0026-1394/60/1A/06017"
}

Živanović, M., Hupe, O., Zutz, H., Šabeta, A., Sandtner, S.,& Kržanović, N.. (2023). EURAMET DOSEtrace supplementary comparison in terms of the ambient dose equivalent/rate for photon radiation (EURAMET.RI(I)-S18). in Metrologia, 60(1A), 06017.
https://doi.org/10.1088/0026-1394/60/1A/06017

Živanović M, Hupe O, Zutz H, Šabeta A, Sandtner S, Kržanović N. EURAMET DOSEtrace supplementary comparison in terms of the ambient dose equivalent/rate for photon radiation (EURAMET.RI(I)-S18). in Metrologia. 2023;60(1A):06017.
doi:10.1088/0026-1394/60/1A/06017 .

Živanović, Miloš, Hupe, Oliver, Zutz, Hayo, Šabeta, Amra, Sandtner, Stanislav, Kržanović, Nikola, "EURAMET DOSEtrace supplementary comparison in terms of the ambient dose equivalent/rate for photon radiation (EURAMET.RI(I)-S18)" in Metrologia, 60, no. 1A (2023):06017,
https://doi.org/10.1088/0026-1394/60/1A/06017 . .

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  - Zutz, Hayo
AU  - Ketelhut, Steffen
AU  - Hupe, Oliver
AU  - Siiskonen, Teemu
AU  - Boziari, Argyro
AU  - Caldeira, Margarida
AU  - Živanović, Miloš
AU  - Kržanović, Nikola
AU  - Van Hoey, Olivier
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11841
AB  - Purpose: The recent update of the ISO 4037, in conjunction with the new radiation protection quantities introduced in ICRU Report 95, present significant challenges to calibration laboratories and industry. Furthermore, there is a need to address gaps and conflicts between standards that set requirements for photon dosimeters, and to incorporate upcoming and new technologies into standardization. Materials and Methods: The European Partnership Project 23NRM07 GuideRadPROS started in June 2023 and will address these issues in the next three years. The objectives are: • to develop harmonized X-ray spectrometry in accordance with the ISO 4037 standard series, evaluate discrepancies between measured and calculated half value layer of X-ray spectra, and produce data to update requirements for reference X-ray fields. • to develop guidance for the calibration of dosimeters. • to produce guidance on validated procedures for harmonized type testing based on IEC standards. • to assess future standardization needs and to produce a guidance document for the implementation of the new operational quantities of ICRU Report 95 into standards and regulations. • to collaborate with ISO and IEC and users of their dosimetry standards to ensure that project outputs align with their needs. Results: The outcome of this project will lead to improved and comparable procedures in calibration and type testing within Europe. Furthermore, the evaluation of the impact of the ICRU Report 95 quantities will allow for an informed realization of calibration fields. Conclusions: GuideRadPROS will improve the confidence in radiation protection dosimetry, both via the promotion of the implementation of the ISO 4037 standard series, and via the assessment of the impact of the ICRU Report 95 operational quantities on daily measurements in radiation protection.
C3  - ERPW 2023 - European Radiation Protection Week : Programme and Book of Abstracts
T1  - GuideRadPROS: Updating the basis of radiation protection dosimetry by harmonization, update and implementation of standards
SP  - 52
EP  - 52
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11841
ER  - 

@conference{
author = "Zutz, Hayo and Ketelhut, Steffen and Hupe, Oliver and Siiskonen, Teemu and Boziari, Argyro and Caldeira, Margarida and Živanović, Miloš and Kržanović, Nikola and Van Hoey, Olivier",
year = "2023",
abstract = "Purpose: The recent update of the ISO 4037, in conjunction with the new radiation protection quantities introduced in ICRU Report 95, present significant challenges to calibration laboratories and industry. Furthermore, there is a need to address gaps and conflicts between standards that set requirements for photon dosimeters, and to incorporate upcoming and new technologies into standardization. Materials and Methods: The European Partnership Project 23NRM07 GuideRadPROS started in June 2023 and will address these issues in the next three years. The objectives are: • to develop harmonized X-ray spectrometry in accordance with the ISO 4037 standard series, evaluate discrepancies between measured and calculated half value layer of X-ray spectra, and produce data to update requirements for reference X-ray fields. • to develop guidance for the calibration of dosimeters. • to produce guidance on validated procedures for harmonized type testing based on IEC standards. • to assess future standardization needs and to produce a guidance document for the implementation of the new operational quantities of ICRU Report 95 into standards and regulations. • to collaborate with ISO and IEC and users of their dosimetry standards to ensure that project outputs align with their needs. Results: The outcome of this project will lead to improved and comparable procedures in calibration and type testing within Europe. Furthermore, the evaluation of the impact of the ICRU Report 95 quantities will allow for an informed realization of calibration fields. Conclusions: GuideRadPROS will improve the confidence in radiation protection dosimetry, both via the promotion of the implementation of the ISO 4037 standard series, and via the assessment of the impact of the ICRU Report 95 operational quantities on daily measurements in radiation protection.",
journal = "ERPW 2023 - European Radiation Protection Week : Programme and Book of Abstracts",
title = "GuideRadPROS: Updating the basis of radiation protection dosimetry by harmonization, update and implementation of standards",
pages = "52-52",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11841"
}

Zutz, H., Ketelhut, S., Hupe, O., Siiskonen, T., Boziari, A., Caldeira, M., Živanović, M., Kržanović, N.,& Van Hoey, O.. (2023). GuideRadPROS: Updating the basis of radiation protection dosimetry by harmonization, update and implementation of standards. in ERPW 2023 - European Radiation Protection Week : Programme and Book of Abstracts, 52-52.
https://hdl.handle.net/21.15107/rcub_vinar_11841

Zutz H, Ketelhut S, Hupe O, Siiskonen T, Boziari A, Caldeira M, Živanović M, Kržanović N, Van Hoey O. GuideRadPROS: Updating the basis of radiation protection dosimetry by harmonization, update and implementation of standards. in ERPW 2023 - European Radiation Protection Week : Programme and Book of Abstracts. 2023;:52-52.
https://hdl.handle.net/21.15107/rcub_vinar_11841 .

Zutz, Hayo, Ketelhut, Steffen, Hupe, Oliver, Siiskonen, Teemu, Boziari, Argyro, Caldeira, Margarida, Živanović, Miloš, Kržanović, Nikola, Van Hoey, Olivier, "GuideRadPROS: Updating the basis of radiation protection dosimetry by harmonization, update and implementation of standards" in ERPW 2023 - European Radiation Protection Week : Programme and Book of Abstracts (2023):52-52,
https://hdl.handle.net/21.15107/rcub_vinar_11841 .

TY  - CONF
AU  - Komatina, Ivana
AU  - Živanović, Miloš
AU  - Kržanović, Nikola
AU  - Đaletić, Miloš
AU  - Stanković, Srboljub
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11911
AB  - Well-type ionization chambers are routinely used for measurements in brachytherapy departments. Since there is no calibration service for brachytherapy ionization chambers available in Serbia, Secondary Standards Dosimetry Laboratory (SSDL) in Vinca Institute of Nuclear Sciences started establishing this service, using a reference well-type chamber Standard Imaging HDR-1000 plus with a PTW Unidos Webline electrometer. The outer wall of the chamber is made of 20 mm thick aluminum, which reduces the influence of the scattered radiation. For each source there is a unique source holder for placement in a reproducible geometry inside the well of the chamber. The ionization chamber stability has to be checked periodically to ensure reliable measurements. IAEA Technical Report Series (TRS) 1274 [IAEA TRS 1247, IAEA 2002] gives guidelines on standardized procedures at SSDLs and hospitals, including the procedure for stability checks of welltype chambers. According to this procedure, 137Cs or 60Co check sources are inserted in the chamber well, using spacers or holders to achieve reproducible geometry. Measurements during stability checks should remain within ±0.5%. In this research, a different procedure for stability checks was tested. A teletherapy 60Co irradiator was used for external irradiation of the well-type chamber. All measurements were corrected for air density (ambient temperature and pressure). Measurements were done in a minimum scatter environment, which was achieved by positioning the ionization chamber 1 m from the irradiator, with the field size of 20x20cm. Correction for 60Co half-life was applied to all measurements. First, the influence of the source holders was tested, and no significant differences were found (0.16% maximum difference when holder is placed in chamber, compared to no holder present). All the subsequent measurements were performed without source holders. During the second test, 4 stability checks were performed during a period of 4 days without moving the chamber or irradiator. The deviations were within the interval -0.39% – +0.25% compared to the first stability check measurement. During the third test, 7 stability checks were performed during a period of 7 days, and complete setup was repeated during each check (chamber positioning, bench positioning, collimator setup etc.). The purpose of the second test was to check the repeatability of positioning, because the positioning can artificially increase deviations between subsequent measurements, making the chamber stability appear worse. All the results were within the interval -0.17% – +0.27%. The results show that this procedure can be adequate for the stability checks of well-type chambers, because the repeatability due to the changes in measurement procedures setup is better than the 0.5%. Differences between second and third test could be caused by insufficient thermalization of the chamber during the second test.
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  - Evaluation of a new procedure for stability checks of well-type brachytherapy chambers
SP  - 120
EP  - 120
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11911
ER  - 

@conference{
author = "Komatina, Ivana and Živanović, Miloš and Kržanović, Nikola and Đaletić, Miloš and Stanković, Srboljub",
year = "2023",
abstract = "Well-type ionization chambers are routinely used for measurements in brachytherapy departments. Since there is no calibration service for brachytherapy ionization chambers available in Serbia, Secondary Standards Dosimetry Laboratory (SSDL) in Vinca Institute of Nuclear Sciences started establishing this service, using a reference well-type chamber Standard Imaging HDR-1000 plus with a PTW Unidos Webline electrometer. The outer wall of the chamber is made of 20 mm thick aluminum, which reduces the influence of the scattered radiation. For each source there is a unique source holder for placement in a reproducible geometry inside the well of the chamber. The ionization chamber stability has to be checked periodically to ensure reliable measurements. IAEA Technical Report Series (TRS) 1274 [IAEA TRS 1247, IAEA 2002] gives guidelines on standardized procedures at SSDLs and hospitals, including the procedure for stability checks of welltype chambers. According to this procedure, 137Cs or 60Co check sources are inserted in the chamber well, using spacers or holders to achieve reproducible geometry. Measurements during stability checks should remain within ±0.5%. In this research, a different procedure for stability checks was tested. A teletherapy 60Co irradiator was used for external irradiation of the well-type chamber. All measurements were corrected for air density (ambient temperature and pressure). Measurements were done in a minimum scatter environment, which was achieved by positioning the ionization chamber 1 m from the irradiator, with the field size of 20x20cm. Correction for 60Co half-life was applied to all measurements. First, the influence of the source holders was tested, and no significant differences were found (0.16% maximum difference when holder is placed in chamber, compared to no holder present). All the subsequent measurements were performed without source holders. During the second test, 4 stability checks were performed during a period of 4 days without moving the chamber or irradiator. The deviations were within the interval -0.39% – +0.25% compared to the first stability check measurement. During the third test, 7 stability checks were performed during a period of 7 days, and complete setup was repeated during each check (chamber positioning, bench positioning, collimator setup etc.). The purpose of the second test was to check the repeatability of positioning, because the positioning can artificially increase deviations between subsequent measurements, making the chamber stability appear worse. All the results were within the interval -0.17% – +0.27%. The results show that this procedure can be adequate for the stability checks of well-type chambers, because the repeatability due to the changes in measurement procedures setup is better than the 0.5%. Differences between second and third test could be caused by insufficient thermalization of the chamber during the second test.",
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 = "Evaluation of a new procedure for stability checks of well-type brachytherapy chambers",
pages = "120-120",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11911"
}

Komatina, I., Živanović, M., Kržanović, N., Đaletić, M.,& Stanković, S.. (2023). Evaluation of a new procedure for stability checks of well-type brachytherapy chambers. in RAP 2023 : International conference on radiation applications in Physics, Chemistry, Biology, Medical Sciences, Engineering and Environmental Sciences; Book of abstracts
Niš : Sievert Association., 120-120.
https://hdl.handle.net/21.15107/rcub_vinar_11911

Komatina I, Živanović M, Kržanović N, Đaletić M, Stanković S. Evaluation of a new procedure for stability checks of well-type brachytherapy chambers. in RAP 2023 : International conference on radiation applications in Physics, Chemistry, Biology, Medical Sciences, Engineering and Environmental Sciences; Book of abstracts. 2023;:120-120.
https://hdl.handle.net/21.15107/rcub_vinar_11911 .

Komatina, Ivana, Živanović, Miloš, Kržanović, Nikola, Đaletić, Miloš, Stanković, Srboljub, "Evaluation of a new procedure for stability checks of well-type brachytherapy chambers" in RAP 2023 : International conference on radiation applications in Physics, Chemistry, Biology, Medical Sciences, Engineering and Environmental Sciences; Book of abstracts (2023):120-120,
https://hdl.handle.net/21.15107/rcub_vinar_11911 .

TY  - CONF
AU  - Živanović, Miloš
AU  - Komatina, Ivana
AU  - Kržanović, Nikola
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11912
AB  - Quality Control (QC) measurements in diagnostic radiology are performed on a wide range of X-ray machines, used for different modalities such as radiography, fluoroscopy, mammography etc. Diagnostic radiology multimeters are in wide use in QC measurements [IAEA TRS 457, IAEA, 2007]. Many of these devices are based on several solid-state detectors positioned behind different filters, and values of different quantities can be calculated based on the signal from these detectors. Besides air kerma and X-ray tube high voltage, multimeters can often measure other special quantities, such as Half Value Layer (HVL), total filtration, irradiation time, product of current and time etc. Calibrations for these special quantities are very rarely available in Secondary Standards Dosimetry Laboratories (SSDL) or other calibration laboratories, so many end-users have problems to establish traceability. Research is currently being undertaken in Vinca Institute SSDL with the aim to establish traceability for HVL calibrations. HVL is a quantity that is commonly measured in SSDLs during internal QA/QC procedures, but there is no consensus on how to establish the traceability in SSDLs. Furthermore, measurement uncertainty for HVL is rarely estimated. In this research, HVL measurement procedure will be updated and detailed evaluation of measurement uncertainty will be undertaken. Sources of uncertainty that will be considered are: energy dependence of ionization chamber, thickness of aluminum filters, statistics of current measurements (reference chamber and monitor chamber), temperature, pressure etc. Traceable results of HVL measurements will further be used to calibrate and test multimeters in reference fields. In this paper, first results are presented.
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  - Traceability of Solid State Detectors used for Half Value Layer measurements in diagnostic radiology
SP  - 29
EP  - 29
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11912
ER  - 

@conference{
author = "Živanović, Miloš and Komatina, Ivana and Kržanović, Nikola",
year = "2023",
abstract = "Quality Control (QC) measurements in diagnostic radiology are performed on a wide range of X-ray machines, used for different modalities such as radiography, fluoroscopy, mammography etc. Diagnostic radiology multimeters are in wide use in QC measurements [IAEA TRS 457, IAEA, 2007]. Many of these devices are based on several solid-state detectors positioned behind different filters, and values of different quantities can be calculated based on the signal from these detectors. Besides air kerma and X-ray tube high voltage, multimeters can often measure other special quantities, such as Half Value Layer (HVL), total filtration, irradiation time, product of current and time etc. Calibrations for these special quantities are very rarely available in Secondary Standards Dosimetry Laboratories (SSDL) or other calibration laboratories, so many end-users have problems to establish traceability. Research is currently being undertaken in Vinca Institute SSDL with the aim to establish traceability for HVL calibrations. HVL is a quantity that is commonly measured in SSDLs during internal QA/QC procedures, but there is no consensus on how to establish the traceability in SSDLs. Furthermore, measurement uncertainty for HVL is rarely estimated. In this research, HVL measurement procedure will be updated and detailed evaluation of measurement uncertainty will be undertaken. Sources of uncertainty that will be considered are: energy dependence of ionization chamber, thickness of aluminum filters, statistics of current measurements (reference chamber and monitor chamber), temperature, pressure etc. Traceable results of HVL measurements will further be used to calibrate and test multimeters in reference fields. In this paper, first results are presented.",
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 = "Traceability of Solid State Detectors used for Half Value Layer measurements in diagnostic radiology",
pages = "29-29",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11912"
}

Živanović, M., Komatina, I.,& Kržanović, N.. (2023). Traceability of Solid State Detectors used for Half Value Layer measurements in diagnostic radiology. in RAP 2023 : International conference on radiation applications in Physics, Chemistry, Biology, Medical Sciences, Engineering and Environmental Sciences; Book of abstracts
Niš : Sievert Association., 29-29.
https://hdl.handle.net/21.15107/rcub_vinar_11912

Živanović M, Komatina I, Kržanović N. Traceability of Solid State Detectors used for Half Value Layer measurements in diagnostic radiology. in RAP 2023 : International conference on radiation applications in Physics, Chemistry, Biology, Medical Sciences, Engineering and Environmental Sciences; Book of abstracts. 2023;:29-29.
https://hdl.handle.net/21.15107/rcub_vinar_11912 .

Živanović, Miloš, Komatina, Ivana, Kržanović, Nikola, "Traceability of Solid State Detectors used for Half Value Layer measurements in diagnostic radiology" in RAP 2023 : International conference on radiation applications in Physics, Chemistry, Biology, Medical Sciences, Engineering and Environmental Sciences; Book of abstracts (2023):29-29,
https://hdl.handle.net/21.15107/rcub_vinar_11912 .

TY  - CONF
AU  - Živanović, Miloš
AU  - Komatina, Ivana
AU  - Kržanović, Nikola
AU  - Đaletić, Miloš
AU  - Stanković, Srboljub
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11924
AB  - U ovom radu je prikazano korišćenje scintilacionog detektora za etaloniranje polja izvora gama zračenja male aktivnosti, za primenu u etaloniranju fotonskih dozimetara. Sledivost je obezbeđena tako što je scintilacioni detektor etaloniran koristeći jonizacionu komoru i izvor veće aktivnosti za nekoliko vrednosti jačine kerme, što je omogućilo da se odredi i njegova linearnost. Identifikovani su najvažniji doprinosi mernoj nesigurnosti etaloniranja polja, a kombinovana merna nesigurnost iznosi 4,6% (k = 2). Mala merna nesigurnost je od posebnog značaja za overavanje dozimetara
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 32. simpozijum DZZSCG : zbornik radova
T1  - Uspostavljanje etalonskog polja za male vrednosti jačine doznog ekvivalenta
SP  - 362
EP  - 367
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11924
ER  - 

@conference{
author = "Živanović, Miloš and Komatina, Ivana and Kržanović, Nikola and Đaletić, Miloš and Stanković, Srboljub",
year = "2023",
abstract = "U ovom radu je prikazano korišćenje scintilacionog detektora za etaloniranje polja izvora gama zračenja male aktivnosti, za primenu u etaloniranju fotonskih dozimetara. Sledivost je obezbeđena tako što je scintilacioni detektor etaloniran koristeći jonizacionu komoru i izvor veće aktivnosti za nekoliko vrednosti jačine kerme, što je omogućilo da se odredi i njegova linearnost. Identifikovani su najvažniji doprinosi mernoj nesigurnosti etaloniranja polja, a kombinovana merna nesigurnost iznosi 4,6% (k = 2). Mala merna nesigurnost je od posebnog značaja za overavanje dozimetara",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "32. simpozijum DZZSCG : zbornik radova",
title = "Uspostavljanje etalonskog polja za male vrednosti jačine doznog ekvivalenta",
pages = "362-367",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11924"
}

Živanović, M., Komatina, I., Kržanović, N., Đaletić, M.,& Stanković, S.. (2023). Uspostavljanje etalonskog polja za male vrednosti jačine doznog ekvivalenta. in 32. simpozijum DZZSCG : zbornik radova
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 362-367.
https://hdl.handle.net/21.15107/rcub_vinar_11924

Živanović M, Komatina I, Kržanović N, Đaletić M, Stanković S. Uspostavljanje etalonskog polja za male vrednosti jačine doznog ekvivalenta. in 32. simpozijum DZZSCG : zbornik radova. 2023;:362-367.
https://hdl.handle.net/21.15107/rcub_vinar_11924 .

Živanović, Miloš, Komatina, Ivana, Kržanović, Nikola, Đaletić, Miloš, Stanković, Srboljub, "Uspostavljanje etalonskog polja za male vrednosti jačine doznog ekvivalenta" in 32. simpozijum DZZSCG : zbornik radova (2023):362-367,
https://hdl.handle.net/21.15107/rcub_vinar_11924 .

TY  - CONF
AU  - Kržanović, Nikola
AU  - Kojić, Andrea
AU  - Bakrač, Luka
AU  - Živanović, Miloš
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11925
AB  - Recommendations on diagnostic radiology calibrations are defined by the IEC and IAEA documents for molybdenum anode target material and molybdenum primary beam filtration (abbreviated as the RQR-M series). Calibration of diagnostic radiology dosimeters (ionization chambers and X-ray multimeters) can also be performed for other anode/filter combinations, including the tungsten anode / aluminium filtration setup. Performance of dosimeters can significantly vary in radiation fields defined by different anode materials and primary beam filtrations, where different spectra and first half-value layers are obtained for the same nominal X-ray tube voltages. Therefore it is important to calibrate or test dosimeters for the range of radiation qualities or conditions in which they will be used. Performance of two such detectors was evaluated.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 32. simpozijum DZZSCG : zbornik radova
T1  - Evaluation of diagnostic radiology detector performance in reference mammography radiation fields
SP  - 369
EP  - 374
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11925
ER  - 

@conference{
author = "Kržanović, Nikola and Kojić, Andrea and Bakrač, Luka and Živanović, Miloš",
year = "2023",
abstract = "Recommendations on diagnostic radiology calibrations are defined by the IEC and IAEA documents for molybdenum anode target material and molybdenum primary beam filtration (abbreviated as the RQR-M series). Calibration of diagnostic radiology dosimeters (ionization chambers and X-ray multimeters) can also be performed for other anode/filter combinations, including the tungsten anode / aluminium filtration setup. Performance of dosimeters can significantly vary in radiation fields defined by different anode materials and primary beam filtrations, where different spectra and first half-value layers are obtained for the same nominal X-ray tube voltages. Therefore it is important to calibrate or test dosimeters for the range of radiation qualities or conditions in which they will be used. Performance of two such detectors was evaluated.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "32. simpozijum DZZSCG : zbornik radova",
title = "Evaluation of diagnostic radiology detector performance in reference mammography radiation fields",
pages = "369-374",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11925"
}

Kržanović, N., Kojić, A., Bakrač, L.,& Živanović, M.. (2023). Evaluation of diagnostic radiology detector performance in reference mammography radiation fields. in 32. simpozijum DZZSCG : zbornik radova
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 369-374.
https://hdl.handle.net/21.15107/rcub_vinar_11925

Kržanović N, Kojić A, Bakrač L, Živanović M. Evaluation of diagnostic radiology detector performance in reference mammography radiation fields. in 32. simpozijum DZZSCG : zbornik radova. 2023;:369-374.
https://hdl.handle.net/21.15107/rcub_vinar_11925 .

Kržanović, Nikola, Kojić, Andrea, Bakrač, Luka, Živanović, Miloš, "Evaluation of diagnostic radiology detector performance in reference mammography radiation fields" in 32. simpozijum DZZSCG : zbornik radova (2023):369-374,
https://hdl.handle.net/21.15107/rcub_vinar_11925 .

TY  - CONF
AU  - Kržanović, Nikola
AU  - Živanović, Miloš
AU  - Đaletić, Miloš
AU  - Komatina, Ivana
AU  - Kojić, Andrea
AU  - Stanković, Srboljub
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11926
AB  - U svrhu osiguranja kvaliteta sprovođenja radioterapijskih procedura, radioterapijski centri širom sveta učestvuju u programu poštanske dozimetrije koju organizuje i sprovodi Međunarodna agencija za atomsku energiju putem globalne mreže Sekundarnih Standardnih Dozimetrijskih Laboratorija. Kontrola kvaliteta podrazumeva ozračivanje pasivnih detektora zračenja (prethodno termoluminiscentnih, danas radiofotoluminiscentnih dozimetara) na poznatu vrednost apsorbovane doze u vodi u visokoenergetskim poljima x-zračenja linearnih akceleratora koji su upotrebi u redovnoj teleterapijskoj praksi. Laboratorija za zaštitu od zračenja i zaštitu životne sredine je u periodu od 2019. do 2022. godine distribuirala pasivne dozimetre radioterapijskim centrima u Srbiji.
AB  - In order to perform quality assurance of radiotherapy procedures, radiotherapy centers participate in a worldwide programme of postal dosimetry external audits, organized by the International Atomic Energy Agency via the global Secondary Standard Dosimetry Laboratory network. Quality control is performed by delivering a known absorbed dose to water value to the passive ionizing radiation detectors (previously thermoluminiscent, recently radiophotoluminiscent dosimeters) in the high-energy x-radiation fields of linear accelerators which are in regular hospital use in teletherapy. Laboratory for radiation and environmental protection has distributed the passive dosimeters to the radiotherapy centers in Serbia in the period from 2019. to 2022.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 32. simpozijum DZZSCG : zbornik radova
T1  - Provera radioterapijskih ustanova Srbije od 2019. do 2022. godine poštanskom dozimetrijom u veličini apsorbovana doza u vodi
T1  - Postal dosimetry audit of radiotherapy centers in Serbia for the period from 2019. to 2022. in terms of absorbed dose to water
SP  - 376
EP  - 381
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11926
ER  - 

@conference{
author = "Kržanović, Nikola and Živanović, Miloš and Đaletić, Miloš and Komatina, Ivana and Kojić, Andrea and Stanković, Srboljub",
year = "2023",
abstract = "U svrhu osiguranja kvaliteta sprovođenja radioterapijskih procedura, radioterapijski centri širom sveta učestvuju u programu poštanske dozimetrije koju organizuje i sprovodi Međunarodna agencija za atomsku energiju putem globalne mreže Sekundarnih Standardnih Dozimetrijskih Laboratorija. Kontrola kvaliteta podrazumeva ozračivanje pasivnih detektora zračenja (prethodno termoluminiscentnih, danas radiofotoluminiscentnih dozimetara) na poznatu vrednost apsorbovane doze u vodi u visokoenergetskim poljima x-zračenja linearnih akceleratora koji su upotrebi u redovnoj teleterapijskoj praksi. Laboratorija za zaštitu od zračenja i zaštitu životne sredine je u periodu od 2019. do 2022. godine distribuirala pasivne dozimetre radioterapijskim centrima u Srbiji., In order to perform quality assurance of radiotherapy procedures, radiotherapy centers participate in a worldwide programme of postal dosimetry external audits, organized by the International Atomic Energy Agency via the global Secondary Standard Dosimetry Laboratory network. Quality control is performed by delivering a known absorbed dose to water value to the passive ionizing radiation detectors (previously thermoluminiscent, recently radiophotoluminiscent dosimeters) in the high-energy x-radiation fields of linear accelerators which are in regular hospital use in teletherapy. Laboratory for radiation and environmental protection has distributed the passive dosimeters to the radiotherapy centers in Serbia in the period from 2019. to 2022.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "32. simpozijum DZZSCG : zbornik radova",
title = "Provera radioterapijskih ustanova Srbije od 2019. do 2022. godine poštanskom dozimetrijom u veličini apsorbovana doza u vodi, Postal dosimetry audit of radiotherapy centers in Serbia for the period from 2019. to 2022. in terms of absorbed dose to water",
pages = "376-381",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11926"
}

Kržanović, N., Živanović, M., Đaletić, M., Komatina, I., Kojić, A.,& Stanković, S.. (2023). Provera radioterapijskih ustanova Srbije od 2019. do 2022. godine poštanskom dozimetrijom u veličini apsorbovana doza u vodi. in 32. simpozijum DZZSCG : zbornik radova
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 376-381.
https://hdl.handle.net/21.15107/rcub_vinar_11926

Kržanović N, Živanović M, Đaletić M, Komatina I, Kojić A, Stanković S. Provera radioterapijskih ustanova Srbije od 2019. do 2022. godine poštanskom dozimetrijom u veličini apsorbovana doza u vodi. in 32. simpozijum DZZSCG : zbornik radova. 2023;:376-381.
https://hdl.handle.net/21.15107/rcub_vinar_11926 .

Kržanović, Nikola, Živanović, Miloš, Đaletić, Miloš, Komatina, Ivana, Kojić, Andrea, Stanković, Srboljub, "Provera radioterapijskih ustanova Srbije od 2019. do 2022. godine poštanskom dozimetrijom u veličini apsorbovana doza u vodi" in 32. simpozijum DZZSCG : zbornik radova (2023):376-381,
https://hdl.handle.net/21.15107/rcub_vinar_11926 .

TY  - CONF
AU  - Kržanović, Nikola
AU  - Kojić, Andrea
AU  - Živanović, Miloš
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11946
PB  - University Novi Sad : Faculty of Sciences
C3  - AAMPM : 11th Alpe Adria Medical Physics Conference : Proceedings book
T1  - Diagnostic radiology dosimeter response dependence of mammography anode/filtration setup
SP  - 15
EP  - 17
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11946
ER  - 

@conference{
author = "Kržanović, Nikola and Kojić, Andrea and Živanović, Miloš",
year = "2023",
publisher = "University Novi Sad : Faculty of Sciences",
journal = "AAMPM : 11th Alpe Adria Medical Physics Conference : Proceedings book",
title = "Diagnostic radiology dosimeter response dependence of mammography anode/filtration setup",
pages = "15-17",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11946"
}

Kržanović, N., Kojić, A.,& Živanović, M.. (2023). Diagnostic radiology dosimeter response dependence of mammography anode/filtration setup. in AAMPM : 11th Alpe Adria Medical Physics Conference : Proceedings book
University Novi Sad : Faculty of Sciences., 15-17.
https://hdl.handle.net/21.15107/rcub_vinar_11946

Kržanović N, Kojić A, Živanović M. Diagnostic radiology dosimeter response dependence of mammography anode/filtration setup. in AAMPM : 11th Alpe Adria Medical Physics Conference : Proceedings book. 2023;:15-17.
https://hdl.handle.net/21.15107/rcub_vinar_11946 .

Kržanović, Nikola, Kojić, Andrea, Živanović, Miloš, "Diagnostic radiology dosimeter response dependence of mammography anode/filtration setup" in AAMPM : 11th Alpe Adria Medical Physics Conference : Proceedings book (2023):15-17,
https://hdl.handle.net/21.15107/rcub_vinar_11946 .

TY  - CONF
AU  - Živanović, Miloš
AU  - Petrović, Branislava
AU  - Radovanlija, Nevena
AU  - Kržanović, Nikola
AU  - Janić, Miloš
AU  - Marjanović, Milana
AU  - Komatina, Ivana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11947
PB  - University Novi Sad : Faculty of Sciences
C3  - AAMPM : 11th Alpe Adria Medical Physics Conference : Proceedings book
T1  - National intercomparison of well chambers in Serbia
SP  - 18
EP  - 20
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11947
ER  - 

@conference{
author = "Živanović, Miloš and Petrović, Branislava and Radovanlija, Nevena and Kržanović, Nikola and Janić, Miloš and Marjanović, Milana and Komatina, Ivana",
year = "2023",
publisher = "University Novi Sad : Faculty of Sciences",
journal = "AAMPM : 11th Alpe Adria Medical Physics Conference : Proceedings book",
title = "National intercomparison of well chambers in Serbia",
pages = "18-20",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11947"
}

Živanović, M., Petrović, B., Radovanlija, N., Kržanović, N., Janić, M., Marjanović, M.,& Komatina, I.. (2023). National intercomparison of well chambers in Serbia. in AAMPM : 11th Alpe Adria Medical Physics Conference : Proceedings book
University Novi Sad : Faculty of Sciences., 18-20.
https://hdl.handle.net/21.15107/rcub_vinar_11947

Živanović M, Petrović B, Radovanlija N, Kržanović N, Janić M, Marjanović M, Komatina I. National intercomparison of well chambers in Serbia. in AAMPM : 11th Alpe Adria Medical Physics Conference : Proceedings book. 2023;:18-20.
https://hdl.handle.net/21.15107/rcub_vinar_11947 .

Živanović, Miloš, Petrović, Branislava, Radovanlija, Nevena, Kržanović, Nikola, Janić, Miloš, Marjanović, Milana, Komatina, Ivana, "National intercomparison of well chambers in Serbia" in AAMPM : 11th Alpe Adria Medical Physics Conference : Proceedings book (2023):18-20,
https://hdl.handle.net/21.15107/rcub_vinar_11947 .

TY  - CONF
AU  - Djozlija, Ljubica
AU  - Nikolov, Jovana
AU  - Božović, Predrag
AU  - Kržanović, Nikola
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11948
PB  - University Novi Sad : Faculty of Sciences
C3  - AAMPM : 11th Alpe Adria Medical Physics Conference : Proceedings book
T1  - Experimental verification of lead free gloves that can be used in interventional radiology
SP  - 223
EP  - 224
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11948
ER  - 

@conference{
author = "Djozlija, Ljubica and Nikolov, Jovana and Božović, Predrag and Kržanović, Nikola",
year = "2023",
publisher = "University Novi Sad : Faculty of Sciences",
journal = "AAMPM : 11th Alpe Adria Medical Physics Conference : Proceedings book",
title = "Experimental verification of lead free gloves that can be used in interventional radiology",
pages = "223-224",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11948"
}

Djozlija, L., Nikolov, J., Božović, P.,& Kržanović, N.. (2023). Experimental verification of lead free gloves that can be used in interventional radiology. in AAMPM : 11th Alpe Adria Medical Physics Conference : Proceedings book
University Novi Sad : Faculty of Sciences., 223-224.
https://hdl.handle.net/21.15107/rcub_vinar_11948

Djozlija L, Nikolov J, Božović P, Kržanović N. Experimental verification of lead free gloves that can be used in interventional radiology. in AAMPM : 11th Alpe Adria Medical Physics Conference : Proceedings book. 2023;:223-224.
https://hdl.handle.net/21.15107/rcub_vinar_11948 .

Djozlija, Ljubica, Nikolov, Jovana, Božović, Predrag, Kržanović, Nikola, "Experimental verification of lead free gloves that can be used in interventional radiology" in AAMPM : 11th Alpe Adria Medical Physics Conference : Proceedings book (2023):223-224,
https://hdl.handle.net/21.15107/rcub_vinar_11948 .

TY  - CONF
AU  - Ketelhut, Steffen
AU  - Zutz, Hayo
AU  - Hupe, Oliver
AU  - Siiskonen, Teemu
AU  - Boziari, Argiro
AU  - Živanović, Miloš
AU  - Kržanović, Nikola
AU  - Van Hoey, Olivier
AU  - Šabeta, Amra
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11951
AB  - Introduction
Calibration laboratories and industrial enterprises involved in radiation protection dosimetry face significant
challenges following the recent update of the ISO 4037 in conjunction with the new radiation protection
quantities introduced in ICRU Report 95, the gaps and contradictions in the standards that set photon
dosimeter requirements, and the lack of standards for upcoming and new technologies.
Methods
The European Partnership Project 23NRM07 GuideRadPROS launched in June 2023 will address these issues
over the next three years. The project objectives are:
1. to develop harmonized X-ray spectrometry in accordance with the ISO 4037 standard series, evaluate
discrepancies between measured and calculated half value layer of X-ray spectra, and produce data to update
requirements for reference fields.
2. to develop guidance and training material for the calibration of dosimeters.
3. to produce guidance on validated procedures for harmonized type testing based on IEC standards.
4. to investigate new and upcoming technologies and assess future standardization needs and to produce a
guidance document for the implementation of the new operational quantities of ICRU Report 95 into standards
and regulations.
5. to collaborate with ISO and IEC and users of their dosimetry standards to ensure that project outputs align
with their needs.
Results and Conclusions
GuideRadPROS will improve the confidence in radiation protection dosimetry, both by promoting the
implementation of the ISO 4037 standard series and by assessing the impact of the operational quantities of
the ICRU Report 95 on daily measurements in radiation protection. Furthermore, the outcome of this project will
lead to improved and comparable procedures in calibration and type testing within Europe
C3  - ICDA-4 : 4th International Conference on Dosimetry and its Applications : Book of abstracts
T1  - Improving standardization in radiation protection dosimetry and supporting reference laboratories in the European Partnership Project GuideRadPROS
SP  - 203
EP  - 203
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11951
ER  - 

@conference{
author = "Ketelhut, Steffen and Zutz, Hayo and Hupe, Oliver and Siiskonen, Teemu and Boziari, Argiro and Živanović, Miloš and Kržanović, Nikola and Van Hoey, Olivier and Šabeta, Amra",
year = "2023",
abstract = "Introduction
Calibration laboratories and industrial enterprises involved in radiation protection dosimetry face significant
challenges following the recent update of the ISO 4037 in conjunction with the new radiation protection
quantities introduced in ICRU Report 95, the gaps and contradictions in the standards that set photon
dosimeter requirements, and the lack of standards for upcoming and new technologies.
Methods
The European Partnership Project 23NRM07 GuideRadPROS launched in June 2023 will address these issues
over the next three years. The project objectives are:
1. to develop harmonized X-ray spectrometry in accordance with the ISO 4037 standard series, evaluate
discrepancies between measured and calculated half value layer of X-ray spectra, and produce data to update
requirements for reference fields.
2. to develop guidance and training material for the calibration of dosimeters.
3. to produce guidance on validated procedures for harmonized type testing based on IEC standards.
4. to investigate new and upcoming technologies and assess future standardization needs and to produce a
guidance document for the implementation of the new operational quantities of ICRU Report 95 into standards
and regulations.
5. to collaborate with ISO and IEC and users of their dosimetry standards to ensure that project outputs align
with their needs.
Results and Conclusions
GuideRadPROS will improve the confidence in radiation protection dosimetry, both by promoting the
implementation of the ISO 4037 standard series and by assessing the impact of the operational quantities of
the ICRU Report 95 on daily measurements in radiation protection. Furthermore, the outcome of this project will
lead to improved and comparable procedures in calibration and type testing within Europe",
journal = "ICDA-4 : 4th International Conference on Dosimetry and its Applications : Book of abstracts",
title = "Improving standardization in radiation protection dosimetry and supporting reference laboratories in the European Partnership Project GuideRadPROS",
pages = "203-203",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11951"
}

Ketelhut, S., Zutz, H., Hupe, O., Siiskonen, T., Boziari, A., Živanović, M., Kržanović, N., Van Hoey, O.,& Šabeta, A.. (2023). Improving standardization in radiation protection dosimetry and supporting reference laboratories in the European Partnership Project GuideRadPROS. in ICDA-4 : 4th International Conference on Dosimetry and its Applications : Book of abstracts, 203-203.
https://hdl.handle.net/21.15107/rcub_vinar_11951

Ketelhut S, Zutz H, Hupe O, Siiskonen T, Boziari A, Živanović M, Kržanović N, Van Hoey O, Šabeta A. Improving standardization in radiation protection dosimetry and supporting reference laboratories in the European Partnership Project GuideRadPROS. in ICDA-4 : 4th International Conference on Dosimetry and its Applications : Book of abstracts. 2023;:203-203.
https://hdl.handle.net/21.15107/rcub_vinar_11951 .

Ketelhut, Steffen, Zutz, Hayo, Hupe, Oliver, Siiskonen, Teemu, Boziari, Argiro, Živanović, Miloš, Kržanović, Nikola, Van Hoey, Olivier, Šabeta, Amra, "Improving standardization in radiation protection dosimetry and supporting reference laboratories in the European Partnership Project GuideRadPROS" in ICDA-4 : 4th International Conference on Dosimetry and its Applications : Book of abstracts (2023):203-203,
https://hdl.handle.net/21.15107/rcub_vinar_11951 .

TY  - CONF
AU  - Zutz, Hayo
AU  - Kržanović, Nikola
AU  - Hupe, Oliver
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11950
AB  - Outdoor active (area)dosemeters are becoming increasingly important for
environmental monitoring, notably in early warning and non-governmental networks
that have emerged because of increasing awareness of potential nuclear accidents.
A clear separation of workplace and environmental area dosemeters is absent. This
has led to a state whereby different international standards for area environmental
and area workplace dosemeters are being used. These non-harmonised type test
requirements set in the different international standards for environmental and area
dosemeters are related to the same operational radiation protection quantity -
ambient dose equivalent rate. Even though most requirements for area workplace
and environmental dosemeters are similar, differences are needed, for example the
dose rate range and the angular dependence.
Therefore, harmonisation of the type test requirements for both environmental and
area workplace dosemeters will improve the type testing procedures and standard
acceptability criteria for these dosemeters, impacting on metrology calibration and
testing laboratories, dosemeter manufacturers, stakeholders and end-users.
One of the main objectives of the 17RPT01 DOSEtrace (Improving Europe's
calibration facilities for radiation monitoring equipment) project is the development
and validation of traceable measurement capabilities for operational radiation
protection quantities. Harmonisation of type test requirements for the measuring
instruments which measure ionising radiation dose in terms of ambient dose
equivalent rate is closely related.
In the presented work, existing type test requirements set by different international
standards were summarized and the most relevant requirements for both workplace
and environmental area dosemeters were extracted. Two sets of requirements were
formulated – one for workplace area monitors and one for environmental area
monitors. The requirements and test methods were experimentally tested with
selected area dose rate meters.
The results could be used as an input for the IEC standardisation body to set up
reliable unified type test requirements for both dosemeter types.
C3  - IM 2022 : NEUDOS 14 : International Conference on Individual Monitoring of Ionising Radiation and Neutron and Ion Dosimetry Symposium : Book of abstracts
T1  - Summary of Performance Testing Requirements for Environmental Dosemeters Compared to Those Used in the Workplace
SP  - 169
EP  - 169
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11950
ER  - 

@conference{
author = "Zutz, Hayo and Kržanović, Nikola and Hupe, Oliver",
year = "2022",
abstract = "Outdoor active (area)dosemeters are becoming increasingly important for
environmental monitoring, notably in early warning and non-governmental networks
that have emerged because of increasing awareness of potential nuclear accidents.
A clear separation of workplace and environmental area dosemeters is absent. This
has led to a state whereby different international standards for area environmental
and area workplace dosemeters are being used. These non-harmonised type test
requirements set in the different international standards for environmental and area
dosemeters are related to the same operational radiation protection quantity -
ambient dose equivalent rate. Even though most requirements for area workplace
and environmental dosemeters are similar, differences are needed, for example the
dose rate range and the angular dependence.
Therefore, harmonisation of the type test requirements for both environmental and
area workplace dosemeters will improve the type testing procedures and standard
acceptability criteria for these dosemeters, impacting on metrology calibration and
testing laboratories, dosemeter manufacturers, stakeholders and end-users.
One of the main objectives of the 17RPT01 DOSEtrace (Improving Europe's
calibration facilities for radiation monitoring equipment) project is the development
and validation of traceable measurement capabilities for operational radiation
protection quantities. Harmonisation of type test requirements for the measuring
instruments which measure ionising radiation dose in terms of ambient dose
equivalent rate is closely related.
In the presented work, existing type test requirements set by different international
standards were summarized and the most relevant requirements for both workplace
and environmental area dosemeters were extracted. Two sets of requirements were
formulated – one for workplace area monitors and one for environmental area
monitors. The requirements and test methods were experimentally tested with
selected area dose rate meters.
The results could be used as an input for the IEC standardisation body to set up
reliable unified type test requirements for both dosemeter types.",
journal = "IM 2022 : NEUDOS 14 : International Conference on Individual Monitoring of Ionising Radiation and Neutron and Ion Dosimetry Symposium : Book of abstracts",
title = "Summary of Performance Testing Requirements for Environmental Dosemeters Compared to Those Used in the Workplace",
pages = "169-169",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11950"
}

Zutz, H., Kržanović, N.,& Hupe, O.. (2022). Summary of Performance Testing Requirements for Environmental Dosemeters Compared to Those Used in the Workplace. in IM 2022 : NEUDOS 14 : International Conference on Individual Monitoring of Ionising Radiation and Neutron and Ion Dosimetry Symposium : Book of abstracts, 169-169.
https://hdl.handle.net/21.15107/rcub_vinar_11950

Zutz H, Kržanović N, Hupe O. Summary of Performance Testing Requirements for Environmental Dosemeters Compared to Those Used in the Workplace. in IM 2022 : NEUDOS 14 : International Conference on Individual Monitoring of Ionising Radiation and Neutron and Ion Dosimetry Symposium : Book of abstracts. 2022;:169-169.
https://hdl.handle.net/21.15107/rcub_vinar_11950 .

Zutz, Hayo, Kržanović, Nikola, Hupe, Oliver, "Summary of Performance Testing Requirements for Environmental Dosemeters Compared to Those Used in the Workplace" in IM 2022 : NEUDOS 14 : International Conference on Individual Monitoring of Ionising Radiation and Neutron and Ion Dosimetry Symposium : Book of abstracts (2022):169-169,
https://hdl.handle.net/21.15107/rcub_vinar_11950 .

TY  - JOUR
AU  - Živanović, Miloš Z.
AU  - Šabeta, Amra F.
AU  - Kržanović, Nikola
AU  - Makarić, Vedrana D.
AU  - Đaletić, Miloš
AU  - Stupar, Milica R.
AU  - Stanković, Srboljub
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10521
AB  - This paper presents a comparison performed between two calibration laboratories in several radiation qualities, using dosimeters of varying quality as transfer instruments. The goal of this work was to investigate the viability of using field-class dosimeters for official comparisons and to determine if the calibration factors for field-class dosimeters are comparable between calibration laboratories within the stated measurement uncertainties. The results of the comparison were acceptable for high-quality electronic personal dosimeters in all radiation qualities, and such dosimeters could be used as transfer instruments. On the other hand, comparison results for low-quality dosimeters were often not acceptable, either due to pronounced energy dependence, low stability, or both. Such instruments are unreliable even under well-defined laboratory conditions, and their use in routine measurements may cause doubt in official data or influence public opinion. This problem is often hidden because many dosimeters are calibrated or verified only in 137Cs beams, where the deviations are the smallest. The largest differences are found for low-energy X-ray radiation qualities, where many dosimeters have significant overresponse.
T2  - Nuclear Technology and Radiation Protection
T1  - Comparison of calibration factors for field-class dosimeters
VL  - 37
IS  - 2
SP  - 103
EP  - 110
DO  - 10.2298/NTRP2202103Z
ER  - 

@article{
author = "Živanović, Miloš Z. and Šabeta, Amra F. and Kržanović, Nikola and Makarić, Vedrana D. and Đaletić, Miloš and Stupar, Milica R. and Stanković, Srboljub",
year = "2022",
abstract = "This paper presents a comparison performed between two calibration laboratories in several radiation qualities, using dosimeters of varying quality as transfer instruments. The goal of this work was to investigate the viability of using field-class dosimeters for official comparisons and to determine if the calibration factors for field-class dosimeters are comparable between calibration laboratories within the stated measurement uncertainties. The results of the comparison were acceptable for high-quality electronic personal dosimeters in all radiation qualities, and such dosimeters could be used as transfer instruments. On the other hand, comparison results for low-quality dosimeters were often not acceptable, either due to pronounced energy dependence, low stability, or both. Such instruments are unreliable even under well-defined laboratory conditions, and their use in routine measurements may cause doubt in official data or influence public opinion. This problem is often hidden because many dosimeters are calibrated or verified only in 137Cs beams, where the deviations are the smallest. The largest differences are found for low-energy X-ray radiation qualities, where many dosimeters have significant overresponse.",
journal = "Nuclear Technology and Radiation Protection",
title = "Comparison of calibration factors for field-class dosimeters",
volume = "37",
number = "2",
pages = "103-110",
doi = "10.2298/NTRP2202103Z"
}

Živanović, M. Z., Šabeta, A. F., Kržanović, N., Makarić, V. D., Đaletić, M., Stupar, M. R.,& Stanković, S.. (2022). Comparison of calibration factors for field-class dosimeters. in Nuclear Technology and Radiation Protection, 37(2), 103-110.
https://doi.org/10.2298/NTRP2202103Z

Živanović MZ, Šabeta AF, Kržanović N, Makarić VD, Đaletić M, Stupar MR, Stanković S. Comparison of calibration factors for field-class dosimeters. in Nuclear Technology and Radiation Protection. 2022;37(2):103-110.
doi:10.2298/NTRP2202103Z .

Živanović, Miloš Z., Šabeta, Amra F., Kržanović, Nikola, Makarić, Vedrana D., Đaletić, Miloš, Stupar, Milica R., Stanković, Srboljub, "Comparison of calibration factors for field-class dosimeters" in Nuclear Technology and Radiation Protection, 37, no. 2 (2022):103-110,
https://doi.org/10.2298/NTRP2202103Z . .

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  - JOUR
AU  - Kržanović, Nikola
AU  - Zutz, Hayo
AU  - Hupe, Oliver
AU  - Živanović, Miloš Z.
AU  - Ketelhut, Steffen
AU  - Luchkov, Maksym
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10298
AB  - Advancements in area monitoring caused by development of environmental monitoring networks which utilise active electronic dosimeters have led to widespread use of active area dosimeters. Currently, there are various sets of requirements for area dosimeters available in IEC standards. A clear distinction is not always made between requirements for area dosimeters used for workplace monitoring and that used for environmental monitoring. Performance testing methods related to the radiation characteristics were examined in a number of standards. Out of this, criteria in terms of relative response limits of variation have been derived for photon energy, angle of incidence and dose rate non-linearity for both dosimeter use cases. Testing of several active area dosimeters which are used for environmental monitoring has been performed in a wide range of photon energy, angle of incidence and dose rate. The collected requirements for environmental and workplace area dosimetry imply that some harmonization of IEC standards for area dosimeters is needed.
T2  - Radiation Physics and Chemistry
T1  - Harmonization of IEC type testing requirements and test methods for active area dosimeters in environmental monitoring
VL  - 198
SP  - 110291
DO  - 10.1016/j.radphyschem.2022.110291
ER  - 

@article{
author = "Kržanović, Nikola and Zutz, Hayo and Hupe, Oliver and Živanović, Miloš Z. and Ketelhut, Steffen and Luchkov, Maksym",
year = "2022",
abstract = "Advancements in area monitoring caused by development of environmental monitoring networks which utilise active electronic dosimeters have led to widespread use of active area dosimeters. Currently, there are various sets of requirements for area dosimeters available in IEC standards. A clear distinction is not always made between requirements for area dosimeters used for workplace monitoring and that used for environmental monitoring. Performance testing methods related to the radiation characteristics were examined in a number of standards. Out of this, criteria in terms of relative response limits of variation have been derived for photon energy, angle of incidence and dose rate non-linearity for both dosimeter use cases. Testing of several active area dosimeters which are used for environmental monitoring has been performed in a wide range of photon energy, angle of incidence and dose rate. The collected requirements for environmental and workplace area dosimetry imply that some harmonization of IEC standards for area dosimeters is needed.",
journal = "Radiation Physics and Chemistry",
title = "Harmonization of IEC type testing requirements and test methods for active area dosimeters in environmental monitoring",
volume = "198",
pages = "110291",
doi = "10.1016/j.radphyschem.2022.110291"
}

Kržanović, N., Zutz, H., Hupe, O., Živanović, M. Z., Ketelhut, S.,& Luchkov, M.. (2022). Harmonization of IEC type testing requirements and test methods for active area dosimeters in environmental monitoring. in Radiation Physics and Chemistry, 198, 110291.
https://doi.org/10.1016/j.radphyschem.2022.110291

Kržanović N, Zutz H, Hupe O, Živanović MZ, Ketelhut S, Luchkov M. Harmonization of IEC type testing requirements and test methods for active area dosimeters in environmental monitoring. in Radiation Physics and Chemistry. 2022;198:110291.
doi:10.1016/j.radphyschem.2022.110291 .

Kržanović, Nikola, Zutz, Hayo, Hupe, Oliver, Živanović, Miloš Z., Ketelhut, Steffen, Luchkov, Maksym, "Harmonization of IEC type testing requirements and test methods for active area dosimeters in environmental monitoring" in Radiation Physics and Chemistry, 198 (2022):110291,
https://doi.org/10.1016/j.radphyschem.2022.110291 . .

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 . .