Nikolov, Jovana

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orcid::0000-0002-9331-8151
  • Nikolov, Jovana (4)
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Author's Bibliography

Type-testing of the TLD system used for the assessing the eye lens doses due to ionising radiation

Stanković Petrović, Jelena; Danilović, Nataša; Kržanović, Nikola; Topalović, Dušan; Živanović, Miloš; Božović, Predrag; Todorović, Nataša; Nikolov, Jovana

(2023)

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 . .

Experimental verification of lead free gloves that can be used in interventional radiology

Djozlija, Ljubica; Nikolov, Jovana; Božović, Predrag; Kržanović, Nikola

(University Novi Sad : Faculty of Sciences, 2023)

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 .

Detailed optimization procedure of an HPGe detector using Geant4 toolkit

Travar, M.; Nikolov, Jovana; Todorović, N.; Vraničar, A.; Völgyesi, P.; Kirchknopf, P.; Čeliković, Igor T.; Milanović, Tamara J.; Joković, D.

(2023)

TY  - JOUR
AU  - Travar, M.
AU  - Nikolov, Jovana
AU  - Todorović, N.
AU  - Vraničar, A.
AU  - Völgyesi, P.
AU  - Kirchknopf, P.
AU  - Čeliković, Igor T.
AU  - Milanović, Tamara J.
AU  - Joković, D.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10734
AB  - Presented study describes the optimization method of an HPGe detector through implementation of Geant4 toolkit. The optimized model was verified through comparison with experimentally obtained data using a set of point-like radioactive calibration sources. Acquired results displayed good agreement with the experimental data that falls under an average relative deviation of the order of ~ 2% within the energy range of 53–1836 keV. Additionally, in order to test the validity of the code it was also applied to a different detection equipment where an average relative deviation of the order of ~ 1.8% was achieved within the energy range of 121–1112 keV. © 2023, Akadémiai Kiadó, Budapest, Hungary.
T2  - Journal of Radioanalytical and Nuclear Chemistry
T1  - Detailed optimization procedure of an HPGe detector using Geant4 toolkit
VL  - 332
IS  - 3
SP  - 817
EP  - 828
DO  - 10.1007/s10967-023-08810-x
ER  - 
@article{
author = "Travar, M. and Nikolov, Jovana and Todorović, N. and Vraničar, A. and Völgyesi, P. and Kirchknopf, P. and Čeliković, Igor T. and Milanović, Tamara J. and Joković, D.",
year = "2023",
abstract = "Presented study describes the optimization method of an HPGe detector through implementation of Geant4 toolkit. The optimized model was verified through comparison with experimentally obtained data using a set of point-like radioactive calibration sources. Acquired results displayed good agreement with the experimental data that falls under an average relative deviation of the order of ~ 2% within the energy range of 53–1836 keV. Additionally, in order to test the validity of the code it was also applied to a different detection equipment where an average relative deviation of the order of ~ 1.8% was achieved within the energy range of 121–1112 keV. © 2023, Akadémiai Kiadó, Budapest, Hungary.",
journal = "Journal of Radioanalytical and Nuclear Chemistry",
title = "Detailed optimization procedure of an HPGe detector using Geant4 toolkit",
volume = "332",
number = "3",
pages = "817-828",
doi = "10.1007/s10967-023-08810-x"
}
Travar, M., Nikolov, J., Todorović, N., Vraničar, A., Völgyesi, P., Kirchknopf, P., Čeliković, I. T., Milanović, T. J.,& Joković, D.. (2023). Detailed optimization procedure of an HPGe detector using Geant4 toolkit. in Journal of Radioanalytical and Nuclear Chemistry, 332(3), 817-828.
https://doi.org/10.1007/s10967-023-08810-x
Travar M, Nikolov J, Todorović N, Vraničar A, Völgyesi P, Kirchknopf P, Čeliković IT, Milanović TJ, Joković D. Detailed optimization procedure of an HPGe detector using Geant4 toolkit. in Journal of Radioanalytical and Nuclear Chemistry. 2023;332(3):817-828.
doi:10.1007/s10967-023-08810-x .
Travar, M., Nikolov, Jovana, Todorović, N., Vraničar, A., Völgyesi, P., Kirchknopf, P., Čeliković, Igor T., Milanović, Tamara J., Joković, D., "Detailed optimization procedure of an HPGe detector using Geant4 toolkit" in Journal of Radioanalytical and Nuclear Chemistry, 332, no. 3 (2023):817-828,
https://doi.org/10.1007/s10967-023-08810-x . .
4
3

Implementation of a new IAEA remote and automated quality control program for radiography equipment

Molnar, Una; Hornjak, Dejana; Nikolov, Jovana; Božović, Predrag; Todorović, Nataša; Stojanović, Sanja; Till, Viktor

(RAD Centre, Niš, Serbia, 2022)

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 . .