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

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

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

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

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

TY  - JOUR
AU  - Kuzmanović, Predrag
AU  - Miljević, Bojan
AU  - Todorović, Nataša
AU  - Forkapić, Sofija
AU  - Čeliković, Igor T.
AU  - Filipović Petrović, Leposava
AU  - Knežević Radić, Jovana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10636
AB  - In this work, the radon emanation coefficients for selected building materials that are most often used in Serbia for covering floor surfaces (concrete, concrete screed, granite, glazed ceramic tiles, marble, roofing tile, and terrazzo tile) were determined, and the influence of the material structure on their values. The concentration of 226Ra activity in the samples was determined using the gamma spectrometry method. Radon emanation was measured with the RAD7 device. The porosity of the samples was tested using mercury intrusion porosimetry and water absorption methods, and the structural analysis was performed using x-ray diffraction analysis and x-ray fluorescence analysis. The measured values of 226Ra activity concentrations were in the range (4.93–298) Bq kg−1, and the estimated values of the radon emanation coefficients were in the range (0.55–6.05) %. The obtained results indicate that the chemical and mineralogical composition, method of production, and the 226Ra activity concentration have an influence on the emanation of radon from the material. No significant correlation was found between the radon emanation coefficient and the open porosity of the material, most likely due to the inhomogeneous presence of pores of different dimensions in the materials. It was established that the total value of the emanation coefficient depends on the emanation coefficient for pores ⩽100 μm in size.
T2  - Journal of Radiological Protection
T1  - The influence of building material structure on radon emanation
VL  - 42
IS  - 4
SP  - 041508
DO  - 10.1088/1361-6498/aca59d
ER  - 

@article{
author = "Kuzmanović, Predrag and Miljević, Bojan and Todorović, Nataša and Forkapić, Sofija and Čeliković, Igor T. and Filipović Petrović, Leposava and Knežević Radić, Jovana",
year = "2022",
abstract = "In this work, the radon emanation coefficients for selected building materials that are most often used in Serbia for covering floor surfaces (concrete, concrete screed, granite, glazed ceramic tiles, marble, roofing tile, and terrazzo tile) were determined, and the influence of the material structure on their values. The concentration of 226Ra activity in the samples was determined using the gamma spectrometry method. Radon emanation was measured with the RAD7 device. The porosity of the samples was tested using mercury intrusion porosimetry and water absorption methods, and the structural analysis was performed using x-ray diffraction analysis and x-ray fluorescence analysis. The measured values of 226Ra activity concentrations were in the range (4.93–298) Bq kg−1, and the estimated values of the radon emanation coefficients were in the range (0.55–6.05) %. The obtained results indicate that the chemical and mineralogical composition, method of production, and the 226Ra activity concentration have an influence on the emanation of radon from the material. No significant correlation was found between the radon emanation coefficient and the open porosity of the material, most likely due to the inhomogeneous presence of pores of different dimensions in the materials. It was established that the total value of the emanation coefficient depends on the emanation coefficient for pores ⩽100 μm in size.",
journal = "Journal of Radiological Protection",
title = "The influence of building material structure on radon emanation",
volume = "42",
number = "4",
pages = "041508",
doi = "10.1088/1361-6498/aca59d"
}

Kuzmanović, P., Miljević, B., Todorović, N., Forkapić, S., Čeliković, I. T., Filipović Petrović, L.,& Knežević Radić, J.. (2022). The influence of building material structure on radon emanation. in Journal of Radiological Protection, 42(4), 041508.
https://doi.org/10.1088/1361-6498/aca59d

Kuzmanović P, Miljević B, Todorović N, Forkapić S, Čeliković IT, Filipović Petrović L, Knežević Radić J. The influence of building material structure on radon emanation. in Journal of Radiological Protection. 2022;42(4):041508.
doi:10.1088/1361-6498/aca59d .

Kuzmanović, Predrag, Miljević, Bojan, Todorović, Nataša, Forkapić, Sofija, Čeliković, Igor T., Filipović Petrović, Leposava, Knežević Radić, Jovana, "The influence of building material structure on radon emanation" in Journal of Radiological Protection, 42, no. 4 (2022):041508,
https://doi.org/10.1088/1361-6498/aca59d . .

TY  - JOUR
AU  - Kuzmanović, Predrag
AU  - Miljević, Bojan
AU  - Todorović, Nataša
AU  - Forkapić, Sofija
AU  - Čeliković, Igor T.
AU  - Filipović Petrović, Leposava
AU  - Knežević Radić, Jovana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10760
AB  - In this work, the radon emanation coefficients for selected building materials that are most often used in Serbia for covering floor surfaces (concrete, concrete screed, granite, glazed ceramic tiles, marble, roofing tile, and terrazzo tile) were determined, and the influence of the material structure on their values. The concentration of 226Ra activity in the samples was determined using the gamma spectrometry method. Radon emanation was measured with the RAD7 device. The porosity of the samples was tested using mercury intrusion porosimetry and water absorption methods, and the structural analysis was performed using x-ray diffraction analysis and x-ray fluorescence analysis. The measured values of 226Ra activity concentrations were in the range (4.93–298) Bq kg−1, and the estimated values of the radon emanation coefficients were in the range (0.55–6.05) %. The obtained results indicate that the chemical and mineralogical composition, method of production, and the 226Ra activity concentration have an influence on the emanation of radon from the material. No significant correlation was found between the radon emanation coefficient and the open porosity of the material, most likely due to the inhomogeneous presence of pores of different dimensions in the materials. It was established that the total value of the emanation coefficient depends on the emanation coefficient for pores ⩽100 μm in size.
T2  - Journal of Radiological Protection
T1  - The influence of building material structure on radon emanation
VL  - 42
IS  - 4
SP  - 041508
DO  - 10.1088/1361-6498/aca59d
ER  - 

@article{
author = "Kuzmanović, Predrag and Miljević, Bojan and Todorović, Nataša and Forkapić, Sofija and Čeliković, Igor T. and Filipović Petrović, Leposava and Knežević Radić, Jovana",
year = "2022",
abstract = "In this work, the radon emanation coefficients for selected building materials that are most often used in Serbia for covering floor surfaces (concrete, concrete screed, granite, glazed ceramic tiles, marble, roofing tile, and terrazzo tile) were determined, and the influence of the material structure on their values. The concentration of 226Ra activity in the samples was determined using the gamma spectrometry method. Radon emanation was measured with the RAD7 device. The porosity of the samples was tested using mercury intrusion porosimetry and water absorption methods, and the structural analysis was performed using x-ray diffraction analysis and x-ray fluorescence analysis. The measured values of 226Ra activity concentrations were in the range (4.93–298) Bq kg−1, and the estimated values of the radon emanation coefficients were in the range (0.55–6.05) %. The obtained results indicate that the chemical and mineralogical composition, method of production, and the 226Ra activity concentration have an influence on the emanation of radon from the material. No significant correlation was found between the radon emanation coefficient and the open porosity of the material, most likely due to the inhomogeneous presence of pores of different dimensions in the materials. It was established that the total value of the emanation coefficient depends on the emanation coefficient for pores ⩽100 μm in size.",
journal = "Journal of Radiological Protection",
title = "The influence of building material structure on radon emanation",
volume = "42",
number = "4",
pages = "041508",
doi = "10.1088/1361-6498/aca59d"
}

Kuzmanović, P., Miljević, B., Todorović, N., Forkapić, S., Čeliković, I. T., Filipović Petrović, L.,& Knežević Radić, J.. (2022). The influence of building material structure on radon emanation. in Journal of Radiological Protection, 42(4), 041508.
https://doi.org/10.1088/1361-6498/aca59d

Kuzmanović P, Miljević B, Todorović N, Forkapić S, Čeliković IT, Filipović Petrović L, Knežević Radić J. The influence of building material structure on radon emanation. in Journal of Radiological Protection. 2022;42(4):041508.
doi:10.1088/1361-6498/aca59d .

Kuzmanović, Predrag, Miljević, Bojan, Todorović, Nataša, Forkapić, Sofija, Čeliković, Igor T., Filipović Petrović, Leposava, Knežević Radić, Jovana, "The influence of building material structure on radon emanation" in Journal of Radiological Protection, 42, no. 4 (2022):041508,
https://doi.org/10.1088/1361-6498/aca59d . .

TY  - CONF
AU  - Kuzmanović, Predrag
AU  - Čeliković, Igor T.
AU  - Forkapić, Sofija
AU  - Todorović, Nataša
AU  - Filipović Petrović, Leposava
AU  - Mrđa, Dušan
AU  - Knežević, Jovana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11128
AB  - Phosphogypsum is a waste that is generated in the production of fertilizers and is very similar to the natural gypsum, thus its use in the construction industry is possible. It usually contains an increased concentration of 226Ra in its composition. The paper presents the results of measuring the radon emanation coefficients for phosphogypsum, natural gypsum and a mixture of natural gypsum and phosphogypsum (50%), that could be potentially used for the production of gypsum boards that are widely applied in construction. Using the method of gamma spectrometry the concentration of 226Ra in the samples was determined, while the concentration of emanated radon from the samples was measured in the specially constructed chambers of different volumes (1.5 l, 2.5 l, 4.25 l, and 30 l), using active radon monitors RAD7 (Durridge Company) and RTM1688-2 (Sarad GmbH). Radon emanation measurements were performed for about 100 cycles of 1 h, after which the emanation curve was fit and the equilibrium concentration of radon activity after one month was theoretically estimated. The effect of chamber volumes on the obtained values of the radon emanation coefficient was investigated. On the basis of the obtained emanation coefficients, it is concluded that these values are strongly dependent on the volume of the measuring chamber and that they increase with expanding the chamber volume. Therefore, it is recommended to use larger volumes of measuring chambers when determining the emanation coefficient for phosphogypsum or natural gypsum. In this way, the real conditions in rooms that are potentially constructed of such materials are better represented, while at the same time the existing effect is neglected.
PB  - RAD Centre, Niš, Serbia
C3  - RAD 2021 : 9th International Conference on Radiation in Various Fields of Research : book of abstracts; June 14-18; Herceg Novi, Montenegro
T1  - Determination of radon emanation for phosphogypsum produced in Serbia
SP  - 199
DO  - 10.21175/rad.abstr.book.2021.28.21
ER  - 

@conference{
author = "Kuzmanović, Predrag and Čeliković, Igor T. and Forkapić, Sofija and Todorović, Nataša and Filipović Petrović, Leposava and Mrđa, Dušan and Knežević, Jovana",
year = "2021",
abstract = "Phosphogypsum is a waste that is generated in the production of fertilizers and is very similar to the natural gypsum, thus its use in the construction industry is possible. It usually contains an increased concentration of 226Ra in its composition. The paper presents the results of measuring the radon emanation coefficients for phosphogypsum, natural gypsum and a mixture of natural gypsum and phosphogypsum (50%), that could be potentially used for the production of gypsum boards that are widely applied in construction. Using the method of gamma spectrometry the concentration of 226Ra in the samples was determined, while the concentration of emanated radon from the samples was measured in the specially constructed chambers of different volumes (1.5 l, 2.5 l, 4.25 l, and 30 l), using active radon monitors RAD7 (Durridge Company) and RTM1688-2 (Sarad GmbH). Radon emanation measurements were performed for about 100 cycles of 1 h, after which the emanation curve was fit and the equilibrium concentration of radon activity after one month was theoretically estimated. The effect of chamber volumes on the obtained values of the radon emanation coefficient was investigated. On the basis of the obtained emanation coefficients, it is concluded that these values are strongly dependent on the volume of the measuring chamber and that they increase with expanding the chamber volume. Therefore, it is recommended to use larger volumes of measuring chambers when determining the emanation coefficient for phosphogypsum or natural gypsum. In this way, the real conditions in rooms that are potentially constructed of such materials are better represented, while at the same time the existing effect is neglected.",
publisher = "RAD Centre, Niš, Serbia",
journal = "RAD 2021 : 9th International Conference on Radiation in Various Fields of Research : book of abstracts; June 14-18; Herceg Novi, Montenegro",
title = "Determination of radon emanation for phosphogypsum produced in Serbia",
pages = "199",
doi = "10.21175/rad.abstr.book.2021.28.21"
}

Kuzmanović, P., Čeliković, I. T., Forkapić, S., Todorović, N., Filipović Petrović, L., Mrđa, D.,& Knežević, J.. (2021). Determination of radon emanation for phosphogypsum produced in Serbia. in RAD 2021 : 9th International Conference on Radiation in Various Fields of Research : book of abstracts; June 14-18; Herceg Novi, Montenegro
RAD Centre, Niš, Serbia., 199.
https://doi.org/10.21175/rad.abstr.book.2021.28.21

Kuzmanović P, Čeliković IT, Forkapić S, Todorović N, Filipović Petrović L, Mrđa D, Knežević J. Determination of radon emanation for phosphogypsum produced in Serbia. in RAD 2021 : 9th International Conference on Radiation in Various Fields of Research : book of abstracts; June 14-18; Herceg Novi, Montenegro. 2021;:199.
doi:10.21175/rad.abstr.book.2021.28.21 .

Kuzmanović, Predrag, Čeliković, Igor T., Forkapić, Sofija, Todorović, Nataša, Filipović Petrović, Leposava, Mrđa, Dušan, Knežević, Jovana, "Determination of radon emanation for phosphogypsum produced in Serbia" in RAD 2021 : 9th International Conference on Radiation in Various Fields of Research : book of abstracts; June 14-18; Herceg Novi, Montenegro (2021):199,
https://doi.org/10.21175/rad.abstr.book.2021.28.21 . .