TY  - JOUR
AU  - Stojadinović, Milica
AU  - Mašulović, Dragan
AU  - Kadija, Marko
AU  - Milovanović, Darko
AU  - Milić, Nataša
AU  - Marković, Ksenija
AU  - Ciraj-Bjelac, Olivera
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12721
AB  - Background and Objectives: Total knee arthroplasty (TKA) has become the treatment of choice for advanced osteoarthritis. The aim of this paper was to show the possibilities of optimizing the Perth CT protocol, which is highly effective for preoperative planning and postoperative assessment of alignment. Materials and Methods: The cross-sectional study comprised 16 patients for preoperative planning or postoperative evaluation of TKA. All patients were examined with the standard and optimized Perth CT protocol using advance techniques, including automatic exposure control (AEC), iterative image reconstruction (IR), as well as a single-energy projection-based metal artifact reduction algorithm for eliminating prosthesis artifacts. The effective radiation dose (E) was determined based on the dose report. Imaging quality is determined according to subjective and objective (values of signal to noise ratio (SdNR) and figure of merit (FOM)) criteria. Results: The effective radiation dose with the optimized protocol was significantly lower compared to the standard protocol (p < 0.001), while in patients with the knee prosthesis, E increased significantly less with the optimized protocol compared to the standard protocol. No significant difference was observed in the subjective evaluation of image quality between protocols (p > 0.05). Analyzing the objective criteria for image quality optimized protocols resulted in lower SdNR values and higher FOM values. No significant difference of image quality was determined using the SdNR and FOM as per the specified protocols and parts of extremities, and for the presence of prothesis. Conclusions: Retrospecting the ALARA (‘As Low As Reasonably Achievable’) principles, it is possible to optimize the Perth CT protocol by reducing the kV and mAs values and by changing the collimation and increasing the pitch factor. Advanced IR techniques were used in both protocols, and AEC was used in the optimized protocol. The effective dose of radiation can be reduced five times, and the image quality will be satisfactory.
T2  - Medicina
T1  - Optimization of the “Perth CT” Protocol for Preoperative Planning and Postoperative Evaluation in Total Knee Arthroplasty
VL  - 60
IS  - 1
SP  - 98
DO  - 10.3390/medicina60010098
ER  - 

@article{
author = "Stojadinović, Milica and Mašulović, Dragan and Kadija, Marko and Milovanović, Darko and Milić, Nataša and Marković, Ksenija and Ciraj-Bjelac, Olivera",
year = "2024",
abstract = "Background and Objectives: Total knee arthroplasty (TKA) has become the treatment of choice for advanced osteoarthritis. The aim of this paper was to show the possibilities of optimizing the Perth CT protocol, which is highly effective for preoperative planning and postoperative assessment of alignment. Materials and Methods: The cross-sectional study comprised 16 patients for preoperative planning or postoperative evaluation of TKA. All patients were examined with the standard and optimized Perth CT protocol using advance techniques, including automatic exposure control (AEC), iterative image reconstruction (IR), as well as a single-energy projection-based metal artifact reduction algorithm for eliminating prosthesis artifacts. The effective radiation dose (E) was determined based on the dose report. Imaging quality is determined according to subjective and objective (values of signal to noise ratio (SdNR) and figure of merit (FOM)) criteria. Results: The effective radiation dose with the optimized protocol was significantly lower compared to the standard protocol (p < 0.001), while in patients with the knee prosthesis, E increased significantly less with the optimized protocol compared to the standard protocol. No significant difference was observed in the subjective evaluation of image quality between protocols (p > 0.05). Analyzing the objective criteria for image quality optimized protocols resulted in lower SdNR values and higher FOM values. No significant difference of image quality was determined using the SdNR and FOM as per the specified protocols and parts of extremities, and for the presence of prothesis. Conclusions: Retrospecting the ALARA (‘As Low As Reasonably Achievable’) principles, it is possible to optimize the Perth CT protocol by reducing the kV and mAs values and by changing the collimation and increasing the pitch factor. Advanced IR techniques were used in both protocols, and AEC was used in the optimized protocol. The effective dose of radiation can be reduced five times, and the image quality will be satisfactory.",
journal = "Medicina",
title = "Optimization of the “Perth CT” Protocol for Preoperative Planning and Postoperative Evaluation in Total Knee Arthroplasty",
volume = "60",
number = "1",
pages = "98",
doi = "10.3390/medicina60010098"
}

Stojadinović, M., Mašulović, D., Kadija, M., Milovanović, D., Milić, N., Marković, K.,& Ciraj-Bjelac, O.. (2024). Optimization of the “Perth CT” Protocol for Preoperative Planning and Postoperative Evaluation in Total Knee Arthroplasty. in Medicina, 60(1), 98.
https://doi.org/10.3390/medicina60010098

Stojadinović M, Mašulović D, Kadija M, Milovanović D, Milić N, Marković K, Ciraj-Bjelac O. Optimization of the “Perth CT” Protocol for Preoperative Planning and Postoperative Evaluation in Total Knee Arthroplasty. in Medicina. 2024;60(1):98.
doi:10.3390/medicina60010098 .

Stojadinović, Milica, Mašulović, Dragan, Kadija, Marko, Milovanović, Darko, Milić, Nataša, Marković, Ksenija, Ciraj-Bjelac, Olivera, "Optimization of the “Perth CT” Protocol for Preoperative Planning and Postoperative Evaluation in Total Knee Arthroplasty" in Medicina, 60, no. 1 (2024):98,
https://doi.org/10.3390/medicina60010098 . .

TY  - JOUR
AU  - Živanović, Miloš Z.
AU  - Vukanac, Ivana
AU  - Samac, Jelena
AU  - Antić, Vojislav
AU  - Jeremić, Marija
AU  - Janković, Drina
AU  - Kandić, Aleksandar
AU  - Vargas, Clarita Saldarriaga
AU  - Struelens, Lara
AU  - Ciraj-Bjelac, Olivera
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10016
AB  - The purpose of this work is to assess accuracy and compare the performance of radionuclide calibrators (RNCs) used in nuclear medicine departments in Serbia. Testing of the RNCs included verification of measurement accuracy, as well as analysis of routinely used quality control protocols, by using the certified radioactivity standards (57Co, 137Cs). RNCs performances were assessed with 99mTc through comparison of reference value for radionuclide activity and RNC measurements. Results of the intercomparison revealed that RNCs, 15 in total, are accurate within 10% in vial geometry and within 15% in syringe geometry. Most of them showed similar performance. The results revealed that container geometry is an important influencing parameter in the accuracy of activity measurement. Obtained results indicate a need for regular calibration and implementation of Quality Control program in order to achieve and maintain the accuracy of activity measurements in nuclear medicine.
T2  - Applied Radiation and Isotopes
T1  - Intercomparison and performance assessment of radionuclide calibrators used in nuclear medicine departments in Serbia
VL  - 179
SP  - 110013
DO  - 10.1016/j.apradiso.2021.110013
ER  - 

@article{
author = "Živanović, Miloš Z. and Vukanac, Ivana and Samac, Jelena and Antić, Vojislav and Jeremić, Marija and Janković, Drina and Kandić, Aleksandar and Vargas, Clarita Saldarriaga and Struelens, Lara and Ciraj-Bjelac, Olivera",
year = "2022",
abstract = "The purpose of this work is to assess accuracy and compare the performance of radionuclide calibrators (RNCs) used in nuclear medicine departments in Serbia. Testing of the RNCs included verification of measurement accuracy, as well as analysis of routinely used quality control protocols, by using the certified radioactivity standards (57Co, 137Cs). RNCs performances were assessed with 99mTc through comparison of reference value for radionuclide activity and RNC measurements. Results of the intercomparison revealed that RNCs, 15 in total, are accurate within 10% in vial geometry and within 15% in syringe geometry. Most of them showed similar performance. The results revealed that container geometry is an important influencing parameter in the accuracy of activity measurement. Obtained results indicate a need for regular calibration and implementation of Quality Control program in order to achieve and maintain the accuracy of activity measurements in nuclear medicine.",
journal = "Applied Radiation and Isotopes",
title = "Intercomparison and performance assessment of radionuclide calibrators used in nuclear medicine departments in Serbia",
volume = "179",
pages = "110013",
doi = "10.1016/j.apradiso.2021.110013"
}

Živanović, M. Z., Vukanac, I., Samac, J., Antić, V., Jeremić, M., Janković, D., Kandić, A., Vargas, C. S., Struelens, L.,& Ciraj-Bjelac, O.. (2022). Intercomparison and performance assessment of radionuclide calibrators used in nuclear medicine departments in Serbia. in Applied Radiation and Isotopes, 179, 110013.
https://doi.org/10.1016/j.apradiso.2021.110013

Živanović MZ, Vukanac I, Samac J, Antić V, Jeremić M, Janković D, Kandić A, Vargas CS, Struelens L, Ciraj-Bjelac O. Intercomparison and performance assessment of radionuclide calibrators used in nuclear medicine departments in Serbia. in Applied Radiation and Isotopes. 2022;179:110013.
doi:10.1016/j.apradiso.2021.110013 .

Živanović, Miloš Z., Vukanac, Ivana, Samac, Jelena, Antić, Vojislav, Jeremić, Marija, Janković, Drina, Kandić, Aleksandar, Vargas, Clarita Saldarriaga, Struelens, Lara, Ciraj-Bjelac, Olivera, "Intercomparison and performance assessment of radionuclide calibrators used in nuclear medicine departments in Serbia" in Applied Radiation and Isotopes, 179 (2022):110013,
https://doi.org/10.1016/j.apradiso.2021.110013 . .

TY  - JOUR
AU  - Knežević, Željka
AU  - Majer, Marija
AU  - Baranowska, Zuzanna
AU  - Ciraj-Bjelac, Olivera
AU  - Iurlaro, Giorgia
AU  - Krzanović, Nikola
AU  - Mariotti, Francesca
AU  - Nodilo, Marijana
AU  - Neumaier, Stefan
AU  - Woloszczuk, Katarzyna
AU  - Živanović, Miloš Z.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9934
AB  - Due to the need for harmonization of passive dosimetry and the requirements of the international standards in the area of environmental monitoring in radiation protection, multiple types of various passive dosimetry systems based on different ionizing radiation detection mechanisms were subjected to extensive performance testing. In the scope of the EMPIR project 16ENV04 Preparedness, the performance of 12 passive dosimetry systems was examined in radiation fields of different photon energies, angles of incidence and ambient dose equivalent rates in order to estimate their performance in the almost omni-directionally and energetically broad radiation field of the natural environment. The use of different detectors, holders, calibrations, measurement procedures and uncertainties, leads to differences in the measured data. Prior investigations and harmonization of passive dosimetry systems are necessary to achieve reliable and comparable dose measurements in Europe.
T2  - Radiation Measurements
T1  - Investigations into the basic properties of different passive dosimetry systems used in environmental radiation monitoring in the aftermath of a nuclear or radiological event
VL  - 146
SP  - 106615
DO  - 10.1016/j.radmeas.2021.106615
ER  - 

@article{
author = "Knežević, Željka and Majer, Marija and Baranowska, Zuzanna and Ciraj-Bjelac, Olivera and Iurlaro, Giorgia and Krzanović, Nikola and Mariotti, Francesca and Nodilo, Marijana and Neumaier, Stefan and Woloszczuk, Katarzyna and Živanović, Miloš Z.",
year = "2021",
abstract = "Due to the need for harmonization of passive dosimetry and the requirements of the international standards in the area of environmental monitoring in radiation protection, multiple types of various passive dosimetry systems based on different ionizing radiation detection mechanisms were subjected to extensive performance testing. In the scope of the EMPIR project 16ENV04 Preparedness, the performance of 12 passive dosimetry systems was examined in radiation fields of different photon energies, angles of incidence and ambient dose equivalent rates in order to estimate their performance in the almost omni-directionally and energetically broad radiation field of the natural environment. The use of different detectors, holders, calibrations, measurement procedures and uncertainties, leads to differences in the measured data. Prior investigations and harmonization of passive dosimetry systems are necessary to achieve reliable and comparable dose measurements in Europe.",
journal = "Radiation Measurements",
title = "Investigations into the basic properties of different passive dosimetry systems used in environmental radiation monitoring in the aftermath of a nuclear or radiological event",
volume = "146",
pages = "106615",
doi = "10.1016/j.radmeas.2021.106615"
}

Knežević, Ž., Majer, M., Baranowska, Z., Ciraj-Bjelac, O., Iurlaro, G., Krzanović, N., Mariotti, F., Nodilo, M., Neumaier, S., Woloszczuk, K.,& Živanović, M. Z.. (2021). Investigations into the basic properties of different passive dosimetry systems used in environmental radiation monitoring in the aftermath of a nuclear or radiological event. in Radiation Measurements, 146, 106615.
https://doi.org/10.1016/j.radmeas.2021.106615

Knežević Ž, Majer M, Baranowska Z, Ciraj-Bjelac O, Iurlaro G, Krzanović N, Mariotti F, Nodilo M, Neumaier S, Woloszczuk K, Živanović MZ. Investigations into the basic properties of different passive dosimetry systems used in environmental radiation monitoring in the aftermath of a nuclear or radiological event. in Radiation Measurements. 2021;146:106615.
doi:10.1016/j.radmeas.2021.106615 .

Knežević, Željka, Majer, Marija, Baranowska, Zuzanna, Ciraj-Bjelac, Olivera, Iurlaro, Giorgia, Krzanović, Nikola, Mariotti, Francesca, Nodilo, Marijana, Neumaier, Stefan, Woloszczuk, Katarzyna, Živanović, Miloš Z., "Investigations into the basic properties of different passive dosimetry systems used in environmental radiation monitoring in the aftermath of a nuclear or radiological event" in Radiation Measurements, 146 (2021):106615,
https://doi.org/10.1016/j.radmeas.2021.106615 . .

TY  - JOUR
AU  - O’Connor, Una M.
AU  - Carinou, Eleftheria
AU  - Clairand, Isabelle
AU  - Ciraj-Bjelac, Olivera
AU  - de Monte, Francesca
AU  - Domienik-Andrzejewska, Joanna
AU  - Ferrari, Paolo
AU  - Ginjaume, Merce
AU  - Hršak, Hrvoje
AU  - Hupe, Oliver
AU  - Knežević, Željka
AU  - Sans Merce, Marta
AU  - Sarmento, Sandra
AU  - Siiskonen, Teemu
AU  - Vanhavere, Filip
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9863
AB  - Occupational radiation doses from interventional procedures have the potential to be relatively high. The requirement to optimise these doses encourages the use of electronic or active personal dosimeters (APDs) which are now increasingly used in hospitals. They are typically used in tandem with a routine passive dosimetry monitoring programme, with APDs used for real-time readings, for training purposes and when new imaging technology is introduced. However, there are limitations when using APDs. A survey in hospitals to identify issues related to the use of APDs was recently completed, along with an extensive series of APD tests by the EURADOS Working Group 12 on Dosimetry for Medical Imaging. The aim of this review paper is to summarise the state of the art regarding the use of APDs. We also used the results of our survey and our tests to develop a set of recommendations for the use of APDs in the clinical interventional radiology/cardiology settings, and draw attention to some of the current challenges.
T2  - Physica Medica
T1  - Recommendations for the use of active personal dosemeters (APDs) in interventional workplaces in hospitals
VL  - 87
SP  - 131
EP  - 135
DO  - 10.1016/j.ejmp.2021.05.015
ER  - 

@article{
author = "O’Connor, Una M. and Carinou, Eleftheria and Clairand, Isabelle and Ciraj-Bjelac, Olivera and de Monte, Francesca and Domienik-Andrzejewska, Joanna and Ferrari, Paolo and Ginjaume, Merce and Hršak, Hrvoje and Hupe, Oliver and Knežević, Željka and Sans Merce, Marta and Sarmento, Sandra and Siiskonen, Teemu and Vanhavere, Filip",
year = "2021",
abstract = "Occupational radiation doses from interventional procedures have the potential to be relatively high. The requirement to optimise these doses encourages the use of electronic or active personal dosimeters (APDs) which are now increasingly used in hospitals. They are typically used in tandem with a routine passive dosimetry monitoring programme, with APDs used for real-time readings, for training purposes and when new imaging technology is introduced. However, there are limitations when using APDs. A survey in hospitals to identify issues related to the use of APDs was recently completed, along with an extensive series of APD tests by the EURADOS Working Group 12 on Dosimetry for Medical Imaging. The aim of this review paper is to summarise the state of the art regarding the use of APDs. We also used the results of our survey and our tests to develop a set of recommendations for the use of APDs in the clinical interventional radiology/cardiology settings, and draw attention to some of the current challenges.",
journal = "Physica Medica",
title = "Recommendations for the use of active personal dosemeters (APDs) in interventional workplaces in hospitals",
volume = "87",
pages = "131-135",
doi = "10.1016/j.ejmp.2021.05.015"
}

O’Connor, U. M., Carinou, E., Clairand, I., Ciraj-Bjelac, O., de Monte, F., Domienik-Andrzejewska, J., Ferrari, P., Ginjaume, M., Hršak, H., Hupe, O., Knežević, Ž., Sans Merce, M., Sarmento, S., Siiskonen, T.,& Vanhavere, F.. (2021). Recommendations for the use of active personal dosemeters (APDs) in interventional workplaces in hospitals. in Physica Medica, 87, 131-135.
https://doi.org/10.1016/j.ejmp.2021.05.015

O’Connor UM, Carinou E, Clairand I, Ciraj-Bjelac O, de Monte F, Domienik-Andrzejewska J, Ferrari P, Ginjaume M, Hršak H, Hupe O, Knežević Ž, Sans Merce M, Sarmento S, Siiskonen T, Vanhavere F. Recommendations for the use of active personal dosemeters (APDs) in interventional workplaces in hospitals. in Physica Medica. 2021;87:131-135.
doi:10.1016/j.ejmp.2021.05.015 .

O’Connor, Una M., Carinou, Eleftheria, Clairand, Isabelle, Ciraj-Bjelac, Olivera, de Monte, Francesca, Domienik-Andrzejewska, Joanna, Ferrari, Paolo, Ginjaume, Merce, Hršak, Hrvoje, Hupe, Oliver, Knežević, Željka, Sans Merce, Marta, Sarmento, Sandra, Siiskonen, Teemu, Vanhavere, Filip, "Recommendations for the use of active personal dosemeters (APDs) in interventional workplaces in hospitals" in Physica Medica, 87 (2021):131-135,
https://doi.org/10.1016/j.ejmp.2021.05.015 . .

TY  - JOUR
AU  - Mitrović, Marko
AU  - Ciraj-Bjelac, Olivera
AU  - Jovanović, Z.
AU  - Krstić, N.
AU  - Nikezić, Dragoslav
AU  - Krstić, Danijela Z.
AU  - Živković, M.
AU  - Lazarević-Macanović, Mirjana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9913
AB  - The objective of this work was to assess absorbed doses in organs and tissues of a rabbit, following computed tomography (CT) examinations, using a dedicated 3D voxel model. Absorbed doses in relevant organs were calculated using the MCNP5 Monte Carlo software. Calculations were perfomed for two standard CT protocols, using tube voltages of 110 kVp and 130 kVp. Absorbed doses were calculated in 11 organs and tissues, i.e., skin, bones, brain, muscles, heart, lungs, liver, spleen, kidney, testicles, and fat tissue. The doses ranged from 15.3 to 28.3 mGy, and from 40.2 to 74.3 mGy, in the two investigated protocols. The organs that received the highest dose were bones and kidneys. In contrast, brain and spleen were organs that received the smallest doses. Doses in organs which are stretched along the body did not change significantly with distance. On the other hand, doses in organs which are localized in the body showed maximums and minimums. Using the voxel model, it is possible to calculate the dose distribution in the rabbit’s body after CT scans, and study the potential biological effects of CT doses in certain organs. The voxel model presented in this work can be used to calculated doses in all radiation experiments in which rabbits are used as experimental animals.
T2  - Radiation and Environmental Biophysics
T1  - Voxel model of a rabbit: assessment of absorbed doses in organs after CT examination performed by two different protocols
VL  - 60
IS  - 4
SP  - 631
EP  - 638
DO  - 10.1007/s00411-021-00941-7
ER  - 

@article{
author = "Mitrović, Marko and Ciraj-Bjelac, Olivera and Jovanović, Z. and Krstić, N. and Nikezić, Dragoslav and Krstić, Danijela Z. and Živković, M. and Lazarević-Macanović, Mirjana",
year = "2021",
abstract = "The objective of this work was to assess absorbed doses in organs and tissues of a rabbit, following computed tomography (CT) examinations, using a dedicated 3D voxel model. Absorbed doses in relevant organs were calculated using the MCNP5 Monte Carlo software. Calculations were perfomed for two standard CT protocols, using tube voltages of 110 kVp and 130 kVp. Absorbed doses were calculated in 11 organs and tissues, i.e., skin, bones, brain, muscles, heart, lungs, liver, spleen, kidney, testicles, and fat tissue. The doses ranged from 15.3 to 28.3 mGy, and from 40.2 to 74.3 mGy, in the two investigated protocols. The organs that received the highest dose were bones and kidneys. In contrast, brain and spleen were organs that received the smallest doses. Doses in organs which are stretched along the body did not change significantly with distance. On the other hand, doses in organs which are localized in the body showed maximums and minimums. Using the voxel model, it is possible to calculate the dose distribution in the rabbit’s body after CT scans, and study the potential biological effects of CT doses in certain organs. The voxel model presented in this work can be used to calculated doses in all radiation experiments in which rabbits are used as experimental animals.",
journal = "Radiation and Environmental Biophysics",
title = "Voxel model of a rabbit: assessment of absorbed doses in organs after CT examination performed by two different protocols",
volume = "60",
number = "4",
pages = "631-638",
doi = "10.1007/s00411-021-00941-7"
}

Mitrović, M., Ciraj-Bjelac, O., Jovanović, Z., Krstić, N., Nikezić, D., Krstić, D. Z., Živković, M.,& Lazarević-Macanović, M.. (2021). Voxel model of a rabbit: assessment of absorbed doses in organs after CT examination performed by two different protocols. in Radiation and Environmental Biophysics, 60(4), 631-638.
https://doi.org/10.1007/s00411-021-00941-7

Mitrović M, Ciraj-Bjelac O, Jovanović Z, Krstić N, Nikezić D, Krstić DZ, Živković M, Lazarević-Macanović M. Voxel model of a rabbit: assessment of absorbed doses in organs after CT examination performed by two different protocols. in Radiation and Environmental Biophysics. 2021;60(4):631-638.
doi:10.1007/s00411-021-00941-7 .

Mitrović, Marko, Ciraj-Bjelac, Olivera, Jovanović, Z., Krstić, N., Nikezić, Dragoslav, Krstić, Danijela Z., Živković, M., Lazarević-Macanović, Mirjana, "Voxel model of a rabbit: assessment of absorbed doses in organs after CT examination performed by two different protocols" in Radiation and Environmental Biophysics, 60, no. 4 (2021):631-638,
https://doi.org/10.1007/s00411-021-00941-7 . .

TY  - JOUR
AU  - Stanković-Petrović, Jelena S.
AU  - Knežević, Željka I.
AU  - Kržanović, Nikola
AU  - Majer, Marija C.
AU  - Živanović, Miloš Z.
AU  - Ciraj-Bjelac, Olivera
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10066
AB  - Passive solid state dosimeters, such as thermoluminescence dosimeters, provide integrated measurement of the total dose and are widely used in environmental monitoring programs. The objective of this paper is to provide a comprehensive review on the use of thermoluminescent dosimetry methods for monitoring radiation dose in the environment. The article presents the part of the research results of the project PREPAREDNESS (EMPIR 2016 call for Metrology for Environment joint research project) with a particular objective to harmonize procedures used by dosimetry services, relevant authorities and Institutes across the Europe. To achieve this, different monitoring routines that are based on passive environ mental dosimetry methods are investigated. Differences in performing specific steps such as preheating, reading, annealing, minimizing fading, and others, are analyzed. The investigation was performed by means of qualitative literature review that showed the lack of information about specific steps. The conclusion of this work is that thermoluminescent dosimetry measurement system has to be type-tested even though the testing procedure is complicated. In addition to this, control dosimeters should be introduced, International Organization for Standardization protocols should be followed during calibration, and finally, parameters influencing the measurement uncertainty have to be identified and well understood in order to pro duce ac cu rate dose measurement results.
T2  - Nuclear Technology and Radiation Protection
T1  - Review of the thermoluminescent dosimetry method for the environmental dose monitoring
VL  - 36
IS  - 2
SP  - 150
EP  - 162
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10066
ER  - 

@article{
author = "Stanković-Petrović, Jelena S. and Knežević, Željka I. and Kržanović, Nikola and Majer, Marija C. and Živanović, Miloš Z. and Ciraj-Bjelac, Olivera",
year = "2021",
abstract = "Passive solid state dosimeters, such as thermoluminescence dosimeters, provide integrated measurement of the total dose and are widely used in environmental monitoring programs. The objective of this paper is to provide a comprehensive review on the use of thermoluminescent dosimetry methods for monitoring radiation dose in the environment. The article presents the part of the research results of the project PREPAREDNESS (EMPIR 2016 call for Metrology for Environment joint research project) with a particular objective to harmonize procedures used by dosimetry services, relevant authorities and Institutes across the Europe. To achieve this, different monitoring routines that are based on passive environ mental dosimetry methods are investigated. Differences in performing specific steps such as preheating, reading, annealing, minimizing fading, and others, are analyzed. The investigation was performed by means of qualitative literature review that showed the lack of information about specific steps. The conclusion of this work is that thermoluminescent dosimetry measurement system has to be type-tested even though the testing procedure is complicated. In addition to this, control dosimeters should be introduced, International Organization for Standardization protocols should be followed during calibration, and finally, parameters influencing the measurement uncertainty have to be identified and well understood in order to pro duce ac cu rate dose measurement results.",
journal = "Nuclear Technology and Radiation Protection",
title = "Review of the thermoluminescent dosimetry method for the environmental dose monitoring",
volume = "36",
number = "2",
pages = "150-162",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10066"
}

Stanković-Petrović, J. S., Knežević, Ž. I., Kržanović, N., Majer, M. C., Živanović, M. Z.,& Ciraj-Bjelac, O.. (2021). Review of the thermoluminescent dosimetry method for the environmental dose monitoring. in Nuclear Technology and Radiation Protection, 36(2), 150-162.
https://hdl.handle.net/21.15107/rcub_vinar_10066

Stanković-Petrović JS, Knežević ŽI, Kržanović N, Majer MC, Živanović MZ, Ciraj-Bjelac O. Review of the thermoluminescent dosimetry method for the environmental dose monitoring. in Nuclear Technology and Radiation Protection. 2021;36(2):150-162.
https://hdl.handle.net/21.15107/rcub_vinar_10066 .

Stanković-Petrović, Jelena S., Knežević, Željka I., Kržanović, Nikola, Majer, Marija C., Živanović, Miloš Z., Ciraj-Bjelac, Olivera, "Review of the thermoluminescent dosimetry method for the environmental dose monitoring" in Nuclear Technology and Radiation Protection, 36, no. 2 (2021):150-162,
https://hdl.handle.net/21.15107/rcub_vinar_10066 .

TY  - JOUR
AU  - Feghali, Joelle Ann
AU  - Delépierre, Julie
AU  - Ciraj-Bjelac, Olivera
AU  - Dabin, Jérémie
AU  - Deleu, Marine
AU  - De Monte, Francesca
AU  - Dobrić, Milan
AU  - Gallagher, Aoife
AU  - Hadid-Beurrier, Lama
AU  - Henry, Patrick
AU  - Hršak, Hrvoje
AU  - Kiernan, Tom
AU  - Kumar, Rajesh
AU  - Knežević, Željka
AU  - Maccia, Carlo
AU  - Majer, Marija
AU  - Malchair, Françoise
AU  - Noble, Stéphane
AU  - Obrad, Davor
AU  - Sans Merce, Marta
AU  - Sideris, Georgios
AU  - Simantirakis, George
AU  - Spaulding, Christian
AU  - Tarantini, Giuseppe
AU  - Van Ngoc Ty, Claire
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10112
AB  - Patients can be exposed to high skin doses during complex interventional cardiology (IC) procedures.PurposeTo identify which clinical and technical parameters affect patient exposure and peak skin dose (PSD) and to establish dose reference levels (DRL) per clinical complexity level in IC procedures.Material and MethodsValidation and Estimation of Radiation skin Dose in Interventional Cardiology (VERIDIC) project analyzed prospectively collected patient data from eight European countries and 12 hospitals where percutaneous coronary intervention (PCI), chronic total occlusion PCI (CTO), and transcatheter aortic valve implantation (TAVI) procedures were performed. A total of 62 clinical complexity parameters and 31 technical parameters were collected, univariate regressions were performed to identify those parameters affecting patient exposure and define DRL accordingly.ResultsPatient exposure as well as clinical and technical parameters were collected for a total of 534 PCI, 219 CTO, and 209 TAVI. For PCI procedures, body mass index (BMI), number of stents ≥2, and total stent length >28?mm were the most prominent clinical parameters, which increased the PSD value. For CTO, these were total stent length >57?mm, BMI, and previous anterograde or retrograde technique that failed in the same session. For TAVI, these were male sex, BMI, and number of diseased vessels. DRL values for Kerma-area product (PKA), air kerma at patient entrance reference point (Ka,r), fluoroscopy time (FT), and PSD were stratified, respectively, for 14 clinical parameters in PCI, 10 in CTO, and four in TAVI.ConclusionPrior knowledge of the key factors influencing the PSD will help optimize patient radiation protection in IC.
T2  - Acta Radiologica
T1  - Patient exposure dose in interventional cardiology per clinical and technical complexity levels. Part 1: results of the VERIDIC project
DO  - 10.1177/02841851211061438
ER  - 

@article{
author = "Feghali, Joelle Ann and Delépierre, Julie and Ciraj-Bjelac, Olivera and Dabin, Jérémie and Deleu, Marine and De Monte, Francesca and Dobrić, Milan and Gallagher, Aoife and Hadid-Beurrier, Lama and Henry, Patrick and Hršak, Hrvoje and Kiernan, Tom and Kumar, Rajesh and Knežević, Željka and Maccia, Carlo and Majer, Marija and Malchair, Françoise and Noble, Stéphane and Obrad, Davor and Sans Merce, Marta and Sideris, Georgios and Simantirakis, George and Spaulding, Christian and Tarantini, Giuseppe and Van Ngoc Ty, Claire",
year = "2021",
abstract = "Patients can be exposed to high skin doses during complex interventional cardiology (IC) procedures.PurposeTo identify which clinical and technical parameters affect patient exposure and peak skin dose (PSD) and to establish dose reference levels (DRL) per clinical complexity level in IC procedures.Material and MethodsValidation and Estimation of Radiation skin Dose in Interventional Cardiology (VERIDIC) project analyzed prospectively collected patient data from eight European countries and 12 hospitals where percutaneous coronary intervention (PCI), chronic total occlusion PCI (CTO), and transcatheter aortic valve implantation (TAVI) procedures were performed. A total of 62 clinical complexity parameters and 31 technical parameters were collected, univariate regressions were performed to identify those parameters affecting patient exposure and define DRL accordingly.ResultsPatient exposure as well as clinical and technical parameters were collected for a total of 534 PCI, 219 CTO, and 209 TAVI. For PCI procedures, body mass index (BMI), number of stents ≥2, and total stent length >28?mm were the most prominent clinical parameters, which increased the PSD value. For CTO, these were total stent length >57?mm, BMI, and previous anterograde or retrograde technique that failed in the same session. For TAVI, these were male sex, BMI, and number of diseased vessels. DRL values for Kerma-area product (PKA), air kerma at patient entrance reference point (Ka,r), fluoroscopy time (FT), and PSD were stratified, respectively, for 14 clinical parameters in PCI, 10 in CTO, and four in TAVI.ConclusionPrior knowledge of the key factors influencing the PSD will help optimize patient radiation protection in IC.",
journal = "Acta Radiologica",
title = "Patient exposure dose in interventional cardiology per clinical and technical complexity levels. Part 1: results of the VERIDIC project",
doi = "10.1177/02841851211061438"
}

Feghali, J. A., Delépierre, J., Ciraj-Bjelac, O., Dabin, J., Deleu, M., De Monte, F., Dobrić, M., Gallagher, A., Hadid-Beurrier, L., Henry, P., Hršak, H., Kiernan, T., Kumar, R., Knežević, Ž., Maccia, C., Majer, M., Malchair, F., Noble, S., Obrad, D., Sans Merce, M., Sideris, G., Simantirakis, G., Spaulding, C., Tarantini, G.,& Van Ngoc Ty, C.. (2021). Patient exposure dose in interventional cardiology per clinical and technical complexity levels. Part 1: results of the VERIDIC project. in Acta Radiologica.
https://doi.org/10.1177/02841851211061438

Feghali JA, Delépierre J, Ciraj-Bjelac O, Dabin J, Deleu M, De Monte F, Dobrić M, Gallagher A, Hadid-Beurrier L, Henry P, Hršak H, Kiernan T, Kumar R, Knežević Ž, Maccia C, Majer M, Malchair F, Noble S, Obrad D, Sans Merce M, Sideris G, Simantirakis G, Spaulding C, Tarantini G, Van Ngoc Ty C. Patient exposure dose in interventional cardiology per clinical and technical complexity levels. Part 1: results of the VERIDIC project. in Acta Radiologica. 2021;.
doi:10.1177/02841851211061438 .

Feghali, Joelle Ann, Delépierre, Julie, Ciraj-Bjelac, Olivera, Dabin, Jérémie, Deleu, Marine, De Monte, Francesca, Dobrić, Milan, Gallagher, Aoife, Hadid-Beurrier, Lama, Henry, Patrick, Hršak, Hrvoje, Kiernan, Tom, Kumar, Rajesh, Knežević, Željka, Maccia, Carlo, Majer, Marija, Malchair, Françoise, Noble, Stéphane, Obrad, Davor, Sans Merce, Marta, Sideris, Georgios, Simantirakis, George, Spaulding, Christian, Tarantini, Giuseppe, Van Ngoc Ty, Claire, "Patient exposure dose in interventional cardiology per clinical and technical complexity levels. Part 1: results of the VERIDIC project" in Acta Radiologica (2021),
https://doi.org/10.1177/02841851211061438 . .

TY  - JOUR
AU  - Feghali, Joelle Ann
AU  - Delépierre, Julie
AU  - Ciraj-Bjelac, Olivera
AU  - Dabin, Jérémie
AU  - Deleu, Marine
AU  - De Monte, Francesca
AU  - Dobrić, Milan R.
AU  - Gallagher, Aoife
AU  - Hadid-Beurrier, Lama
AU  - Henry, Patrick
AU  - Hršak, Hrvoje
AU  - Kiernan, Tom
AU  - Kumar, Rajesh
AU  - Knežević, Željka
AU  - Maccia, Carlo
AU  - Majer, Marija
AU  - Malchair, Françoise
AU  - Noble, Stéphane
AU  - Obrad, Davor
AU  - Merce, Marta Sans
AU  - Sideris, Georgios
AU  - Simantirakis, George
AU  - Spaulding, Christian
AU  - Tarantini, Giuseppe
AU  - Van Ngoc Ty, Claire
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10111
AB  - Optimizing patient exposure in interventional cardiology is key to avoid skin injuries.PurposeTo establish predictive models of peak skin dose (PSD) during percutaneous coronary intervention (PCI), chronic total occlusion percutaneous coronary intervention (CTO), and transcatheter aortic valve implantation (TAVI) procedures.Material and MethodsA total of 534 PCI, 219 CTO, and 209 TAVI were collected from 12 hospitals in eight European countries. Independent associations between PSD and clinical and technical dose determinants were examined for those procedures using multivariate statistical analysis. A priori and a posteriori predictive models were built using stepwise multiple linear regressions. A fourfold cross-validation was performed, and models? performance was evaluated using the root mean square error (RMSE), mean absolute percentage error (MAPE), coefficient of determination (R²), and linear correlation coefficient (r).ResultsMultivariate analysis proved technical parameters to overweight clinical complexity indices with PSD mainly affected by fluoroscopy time, tube voltage, tube current, distance to detector, and tube angulation for PCI. For CTO, these were body mass index, tube voltage, and fluoroscopy contribution. For TAVI, these parameters were sex, fluoroscopy time, tube voltage, and cine acquisitions. When benchmarking the predictive models, the correlation coefficients were r?=?0.45 for the a priori model and r?=?0.89 for the a posteriori model for PCI. These were 0.44 and 0.67, respectively, for the CTO a priori and a posteriori models, and 0.58 and 0.74, respectively, for the TAVI a priori and a posteriori models.ConclusionA priori predictive models can help operators estimate the PSD before performing the intervention while a posteriori models are more accurate estimates and can be useful in the absence of skin dose mapping solutions
T2  - Acta Radiologica
T1  - Establishing a priori and a posteriori predictive models to assess patients’ peak skin dose in interventional cardiology. Part 2: results of the VERIDIC project
DO  - 10.1177/02841851211062089
ER  - 

@article{
author = "Feghali, Joelle Ann and Delépierre, Julie and Ciraj-Bjelac, Olivera and Dabin, Jérémie and Deleu, Marine and De Monte, Francesca and Dobrić, Milan R. and Gallagher, Aoife and Hadid-Beurrier, Lama and Henry, Patrick and Hršak, Hrvoje and Kiernan, Tom and Kumar, Rajesh and Knežević, Željka and Maccia, Carlo and Majer, Marija and Malchair, Françoise and Noble, Stéphane and Obrad, Davor and Merce, Marta Sans and Sideris, Georgios and Simantirakis, George and Spaulding, Christian and Tarantini, Giuseppe and Van Ngoc Ty, Claire",
year = "2021",
abstract = "Optimizing patient exposure in interventional cardiology is key to avoid skin injuries.PurposeTo establish predictive models of peak skin dose (PSD) during percutaneous coronary intervention (PCI), chronic total occlusion percutaneous coronary intervention (CTO), and transcatheter aortic valve implantation (TAVI) procedures.Material and MethodsA total of 534 PCI, 219 CTO, and 209 TAVI were collected from 12 hospitals in eight European countries. Independent associations between PSD and clinical and technical dose determinants were examined for those procedures using multivariate statistical analysis. A priori and a posteriori predictive models were built using stepwise multiple linear regressions. A fourfold cross-validation was performed, and models? performance was evaluated using the root mean square error (RMSE), mean absolute percentage error (MAPE), coefficient of determination (R²), and linear correlation coefficient (r).ResultsMultivariate analysis proved technical parameters to overweight clinical complexity indices with PSD mainly affected by fluoroscopy time, tube voltage, tube current, distance to detector, and tube angulation for PCI. For CTO, these were body mass index, tube voltage, and fluoroscopy contribution. For TAVI, these parameters were sex, fluoroscopy time, tube voltage, and cine acquisitions. When benchmarking the predictive models, the correlation coefficients were r?=?0.45 for the a priori model and r?=?0.89 for the a posteriori model for PCI. These were 0.44 and 0.67, respectively, for the CTO a priori and a posteriori models, and 0.58 and 0.74, respectively, for the TAVI a priori and a posteriori models.ConclusionA priori predictive models can help operators estimate the PSD before performing the intervention while a posteriori models are more accurate estimates and can be useful in the absence of skin dose mapping solutions",
journal = "Acta Radiologica",
title = "Establishing a priori and a posteriori predictive models to assess patients’ peak skin dose in interventional cardiology. Part 2: results of the VERIDIC project",
doi = "10.1177/02841851211062089"
}

Feghali, J. A., Delépierre, J., Ciraj-Bjelac, O., Dabin, J., Deleu, M., De Monte, F., Dobrić, M. R., Gallagher, A., Hadid-Beurrier, L., Henry, P., Hršak, H., Kiernan, T., Kumar, R., Knežević, Ž., Maccia, C., Majer, M., Malchair, F., Noble, S., Obrad, D., Merce, M. S., Sideris, G., Simantirakis, G., Spaulding, C., Tarantini, G.,& Van Ngoc Ty, C.. (2021). Establishing a priori and a posteriori predictive models to assess patients’ peak skin dose in interventional cardiology. Part 2: results of the VERIDIC project. in Acta Radiologica.
https://doi.org/10.1177/02841851211062089

Feghali JA, Delépierre J, Ciraj-Bjelac O, Dabin J, Deleu M, De Monte F, Dobrić MR, Gallagher A, Hadid-Beurrier L, Henry P, Hršak H, Kiernan T, Kumar R, Knežević Ž, Maccia C, Majer M, Malchair F, Noble S, Obrad D, Merce MS, Sideris G, Simantirakis G, Spaulding C, Tarantini G, Van Ngoc Ty C. Establishing a priori and a posteriori predictive models to assess patients’ peak skin dose in interventional cardiology. Part 2: results of the VERIDIC project. in Acta Radiologica. 2021;.
doi:10.1177/02841851211062089 .

Feghali, Joelle Ann, Delépierre, Julie, Ciraj-Bjelac, Olivera, Dabin, Jérémie, Deleu, Marine, De Monte, Francesca, Dobrić, Milan R., Gallagher, Aoife, Hadid-Beurrier, Lama, Henry, Patrick, Hršak, Hrvoje, Kiernan, Tom, Kumar, Rajesh, Knežević, Željka, Maccia, Carlo, Majer, Marija, Malchair, Françoise, Noble, Stéphane, Obrad, Davor, Merce, Marta Sans, Sideris, Georgios, Simantirakis, George, Spaulding, Christian, Tarantini, Giuseppe, Van Ngoc Ty, Claire, "Establishing a priori and a posteriori predictive models to assess patients’ peak skin dose in interventional cardiology. Part 2: results of the VERIDIC project" in Acta Radiologica (2021),
https://doi.org/10.1177/02841851211062089 . .

TY  - JOUR
AU  - Krajinović, Marko
AU  - Vujisić, Miloš
AU  - Ciraj-Bjelac, Olivera
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10110
AB  - The purpose of this work is to provide a comprehensive analysis of uncertainties associated with the use of software solutions utilizing DICOM RDSRs for skin dose assessment in the interventional fluoroscopic environment.Three different scenarios have been defined for determining the overall uncertainty, each with a specific assumption on the maximum deviations of factors affecting the calculated dose. Relative expanded uncertainty has been calculated using two approaches: the law of propagation of uncertainty and the propagation of distributions based on the Monte Carlo method. According to the propagation of uncertainty, it is estimated that the lowest possible relative expanded uncertainty of ~13% (at the 95% level of confidence, i.e. with the coverage factor of k = 2 assuming normal distribution) could only be achieved if all sources of uncertainties are carefully controlled, whereas maximum relative expanded uncertainty could reach up to 61% if none of the influencing parameters are controlled properly. When the influencing parameters are reasonably well-controlled, realistic relative expanded uncertainty amounts to 28%. Values for the relative expanded uncertainty obtained from the Monte Carlo propagation of distributions concur with the results obtained from the propagation of uncertainty to within 3% in all three considered scenarios, validating the assumption of normality.The overall skin dose relative uncertainty has been found to range from 13 to 61%, emphasizing the importance of adequate analysis and control of all relevant uncertainty sources.
T2  - Radiation Protection Dosimetry
T1  - Uncertainty associated with the use of software solutions utilizing dicom rdsr for skin dose assessment in interventional radiology and cardiology
VL  - 196
IS  - 3-4
SP  - 129
EP  - 135
DO  - 10.1093/rpd/ncab146
ER  - 

@article{
author = "Krajinović, Marko and Vujisić, Miloš and Ciraj-Bjelac, Olivera",
year = "2021",
abstract = "The purpose of this work is to provide a comprehensive analysis of uncertainties associated with the use of software solutions utilizing DICOM RDSRs for skin dose assessment in the interventional fluoroscopic environment.Three different scenarios have been defined for determining the overall uncertainty, each with a specific assumption on the maximum deviations of factors affecting the calculated dose. Relative expanded uncertainty has been calculated using two approaches: the law of propagation of uncertainty and the propagation of distributions based on the Monte Carlo method. According to the propagation of uncertainty, it is estimated that the lowest possible relative expanded uncertainty of ~13% (at the 95% level of confidence, i.e. with the coverage factor of k = 2 assuming normal distribution) could only be achieved if all sources of uncertainties are carefully controlled, whereas maximum relative expanded uncertainty could reach up to 61% if none of the influencing parameters are controlled properly. When the influencing parameters are reasonably well-controlled, realistic relative expanded uncertainty amounts to 28%. Values for the relative expanded uncertainty obtained from the Monte Carlo propagation of distributions concur with the results obtained from the propagation of uncertainty to within 3% in all three considered scenarios, validating the assumption of normality.The overall skin dose relative uncertainty has been found to range from 13 to 61%, emphasizing the importance of adequate analysis and control of all relevant uncertainty sources.",
journal = "Radiation Protection Dosimetry",
title = "Uncertainty associated with the use of software solutions utilizing dicom rdsr for skin dose assessment in interventional radiology and cardiology",
volume = "196",
number = "3-4",
pages = "129-135",
doi = "10.1093/rpd/ncab146"
}

Krajinović, M., Vujisić, M.,& Ciraj-Bjelac, O.. (2021). Uncertainty associated with the use of software solutions utilizing dicom rdsr for skin dose assessment in interventional radiology and cardiology. in Radiation Protection Dosimetry, 196(3-4), 129-135.
https://doi.org/10.1093/rpd/ncab146

Krajinović M, Vujisić M, Ciraj-Bjelac O. Uncertainty associated with the use of software solutions utilizing dicom rdsr for skin dose assessment in interventional radiology and cardiology. in Radiation Protection Dosimetry. 2021;196(3-4):129-135.
doi:10.1093/rpd/ncab146 .

Krajinović, Marko, Vujisić, Miloš, Ciraj-Bjelac, Olivera, "Uncertainty associated with the use of software solutions utilizing dicom rdsr for skin dose assessment in interventional radiology and cardiology" in Radiation Protection Dosimetry, 196, no. 3-4 (2021):129-135,
https://doi.org/10.1093/rpd/ncab146 . .

TY  - JOUR
AU  - Krajinović, Marko
AU  - Kržanović, Nikola
AU  - Ciraj-Bjelac, Olivera
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9519
AB  - Purpose: The purpose of this paper is to present and validate an originally developed application SkinCare used for skin dose mapping in interventional procedures, which are associated with relatively high radiation doses to the patient’s skin and possible skin reactions. Methods: SkinCare is an application tool for generating skin dose maps following interventional radiology and cardiology procedures using the realistic 3D patient models. Skin dose is calculated using data from Digital Imaging and Communications in Medicine (DICOM) Radiation Dose Structured Reports (RDSRs). SkinCare validation was performed by using the data from the Siemens Artis Zee Biplane fluoroscopy system and conducting “Acceptance and quality control protocols for skin dose calculating software solutions in interventional cardiology” developed and tested in the frame of the VERIDIC project. XR-RV3 Gafchromic films were used as dosimeters to compare peak skin doses (PSDs) and dose maps obtained through measurements and calculations. DICOM RDSRs from four fluoroscopy systems of different vendors (Canon, GE, Philips, and Siemens) were used for the development of the SkinCare and for the comparison of skin dose maps generated using SkinCare to skin dose maps generated by different commercial software tools (Dose Tracking System (DTS) from Canon, RadimetricsTM from Bayer and RDM from MEDSQUARE). The same RDSRs generated during a cardiology clinical procedure (percutaneous coronary intervention—PCI) were used for comparison. Results: Validation performed using VERIDIC's protocols for skin dose calculation software showed that PSD calculated by SkinCare is within 17% and 16% accuracy compared to measurements using XR-RV3 Gafchromic films for fundamental irradiation setups and simplified clinical procedures, respectively. Good visual agreement between dose maps generated by SkinCare and DTS, RadimetricsTM and RDM was obtained. Conclusions: SkinCare is proved to be very convenient solution that can be used for monitoring delivered dose following interventional procedures. © 2021 The Authors. Journal of Applied Clinical Medical Physics published by Wiley Periodicals, Inc. on behalf of American Association of Physicists in Medicine.
T2  - Journal of Applied Clinical Medical Physics
T1  - Vendor‐independent skin dose mapping application for interventional radiology and cardiology
VL  - 22
IS  - 2
SP  - 145
EP  - 157
DO  - 10.1002/acm2.13167
ER  - 

@article{
author = "Krajinović, Marko and Kržanović, Nikola and Ciraj-Bjelac, Olivera",
year = "2021",
abstract = "Purpose: The purpose of this paper is to present and validate an originally developed application SkinCare used for skin dose mapping in interventional procedures, which are associated with relatively high radiation doses to the patient’s skin and possible skin reactions. Methods: SkinCare is an application tool for generating skin dose maps following interventional radiology and cardiology procedures using the realistic 3D patient models. Skin dose is calculated using data from Digital Imaging and Communications in Medicine (DICOM) Radiation Dose Structured Reports (RDSRs). SkinCare validation was performed by using the data from the Siemens Artis Zee Biplane fluoroscopy system and conducting “Acceptance and quality control protocols for skin dose calculating software solutions in interventional cardiology” developed and tested in the frame of the VERIDIC project. XR-RV3 Gafchromic films were used as dosimeters to compare peak skin doses (PSDs) and dose maps obtained through measurements and calculations. DICOM RDSRs from four fluoroscopy systems of different vendors (Canon, GE, Philips, and Siemens) were used for the development of the SkinCare and for the comparison of skin dose maps generated using SkinCare to skin dose maps generated by different commercial software tools (Dose Tracking System (DTS) from Canon, RadimetricsTM from Bayer and RDM from MEDSQUARE). The same RDSRs generated during a cardiology clinical procedure (percutaneous coronary intervention—PCI) were used for comparison. Results: Validation performed using VERIDIC's protocols for skin dose calculation software showed that PSD calculated by SkinCare is within 17% and 16% accuracy compared to measurements using XR-RV3 Gafchromic films for fundamental irradiation setups and simplified clinical procedures, respectively. Good visual agreement between dose maps generated by SkinCare and DTS, RadimetricsTM and RDM was obtained. Conclusions: SkinCare is proved to be very convenient solution that can be used for monitoring delivered dose following interventional procedures. © 2021 The Authors. Journal of Applied Clinical Medical Physics published by Wiley Periodicals, Inc. on behalf of American Association of Physicists in Medicine.",
journal = "Journal of Applied Clinical Medical Physics",
title = "Vendor‐independent skin dose mapping application for interventional radiology and cardiology",
volume = "22",
number = "2",
pages = "145-157",
doi = "10.1002/acm2.13167"
}

Krajinović, M., Kržanović, N.,& Ciraj-Bjelac, O.. (2021). Vendor‐independent skin dose mapping application for interventional radiology and cardiology. in Journal of Applied Clinical Medical Physics, 22(2), 145-157.
https://doi.org/10.1002/acm2.13167

Krajinović M, Kržanović N, Ciraj-Bjelac O. Vendor‐independent skin dose mapping application for interventional radiology and cardiology. in Journal of Applied Clinical Medical Physics. 2021;22(2):145-157.
doi:10.1002/acm2.13167 .

Krajinović, Marko, Kržanović, Nikola, Ciraj-Bjelac, Olivera, "Vendor‐independent skin dose mapping application for interventional radiology and cardiology" in Journal of Applied Clinical Medical Physics, 22, no. 2 (2021):145-157,
https://doi.org/10.1002/acm2.13167 . .

TY  - JOUR
AU  - Kržanović, Nikola
AU  - Blideanu, Valentin
AU  - Ciraj-Bjelac, Olivera
AU  - Plagnard, Johann
AU  - Schoonjans, Werner
AU  - Živanović, Miloš Z.
AU  - Dabin, Jérémie
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9554
AB  - Interventional procedures in radiology and cardiology are associated with high dose to the patient. Accurate dosimetry is essential and calibration of the equipment is a means to provide the necessary accuracy of dose assessment. The objective of this work is to investigate the performance of dosimeters used in interventional procedures in different standard and non-standard X-ray radiation qualities, and to investigate potential uncertainties related to dose measurements, thus improving accuracy of patient dosimetry in interventional procedures. Four new reference radiation qualities dedicated to interventional cardiology applications have been established, allowing calibration of dosimeters used in clinical conditions with appropriate traceability to primary standards. Testing of solid-state semiconductor detectors and thermoluminescent dosimeter properties, e.g. influence of photon energy, angle of incidence and dose rate, was performed in the standard and non-standard radiation qualities. Both dosimeter types showed good performance in the non-standard beams during all performance tests. Solid-state dosimeters displayed weak dependence on energy, angle of incidence and dose rate, in the range defined by the manufacturer and requirements of the international standard. Thermoluminescent dosimeters displayed excellent linearity and angular dependence. The influence of energy dependence on measurement uncertainty can be reduced if appropriate radiation quality is selected for calibration. © 2021 Elsevier Ltd
T2  - Radiation Measurements
T1  - Performance testing of dosimeters used in interventional radiology: Results from the VERIDIC project
VL  - 141
SP  - 106515
DO  - 10.1016/j.radmeas.2021.106515
ER  - 

@article{
author = "Kržanović, Nikola and Blideanu, Valentin and Ciraj-Bjelac, Olivera and Plagnard, Johann and Schoonjans, Werner and Živanović, Miloš Z. and Dabin, Jérémie",
year = "2021",
abstract = "Interventional procedures in radiology and cardiology are associated with high dose to the patient. Accurate dosimetry is essential and calibration of the equipment is a means to provide the necessary accuracy of dose assessment. The objective of this work is to investigate the performance of dosimeters used in interventional procedures in different standard and non-standard X-ray radiation qualities, and to investigate potential uncertainties related to dose measurements, thus improving accuracy of patient dosimetry in interventional procedures. Four new reference radiation qualities dedicated to interventional cardiology applications have been established, allowing calibration of dosimeters used in clinical conditions with appropriate traceability to primary standards. Testing of solid-state semiconductor detectors and thermoluminescent dosimeter properties, e.g. influence of photon energy, angle of incidence and dose rate, was performed in the standard and non-standard radiation qualities. Both dosimeter types showed good performance in the non-standard beams during all performance tests. Solid-state dosimeters displayed weak dependence on energy, angle of incidence and dose rate, in the range defined by the manufacturer and requirements of the international standard. Thermoluminescent dosimeters displayed excellent linearity and angular dependence. The influence of energy dependence on measurement uncertainty can be reduced if appropriate radiation quality is selected for calibration. © 2021 Elsevier Ltd",
journal = "Radiation Measurements",
title = "Performance testing of dosimeters used in interventional radiology: Results from the VERIDIC project",
volume = "141",
pages = "106515",
doi = "10.1016/j.radmeas.2021.106515"
}

Kržanović, N., Blideanu, V., Ciraj-Bjelac, O., Plagnard, J., Schoonjans, W., Živanović, M. Z.,& Dabin, J.. (2021). Performance testing of dosimeters used in interventional radiology: Results from the VERIDIC project. in Radiation Measurements, 141, 106515.
https://doi.org/10.1016/j.radmeas.2021.106515

Kržanović N, Blideanu V, Ciraj-Bjelac O, Plagnard J, Schoonjans W, Živanović MZ, Dabin J. Performance testing of dosimeters used in interventional radiology: Results from the VERIDIC project. in Radiation Measurements. 2021;141:106515.
doi:10.1016/j.radmeas.2021.106515 .

Kržanović, Nikola, Blideanu, Valentin, Ciraj-Bjelac, Olivera, Plagnard, Johann, Schoonjans, Werner, Živanović, Miloš Z., Dabin, Jérémie, "Performance testing of dosimeters used in interventional radiology: Results from the VERIDIC project" in Radiation Measurements, 141 (2021):106515,
https://doi.org/10.1016/j.radmeas.2021.106515 . .

TY  - JOUR
AU  - Candela-Juan, Cristian
AU  - Ciraj-Bjelac, Olivera
AU  - Sans Merce, Marta
AU  - Dabin, Jérémie
AU  - Faj, Dario
AU  - Gallagher, Aoife
AU  - de las Heras Gala, Hugo
AU  - Knežević, Željka
AU  - Malchair, Françoise
AU  - De Monte, Francesca
AU  - Simantirakis, George
AU  - Theodorakou, Chrysoula
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9822
AB  - The use of patient contact-shielding has become a topic of intensive scientific debate. While it has been common practice during the last decades, some studies have questioned the efficiency of using such shielding while others have highlighted the inconsistencies in its application. The objective of this work is to review current recommendations and legislative documents on the use of out-of-field shielding in X-ray imaging, including those from national authorities and from international and national organisations and professional bodies. The review, performed within the framework of the activities of EURADOS Working Group 12, covers available recommendations on use of contact shielding in adult, pregnant and paediatric patients in general radiography, fluoroscopy, computed tomography, mammography and dental radiology. It includes a comprehensive search of 83 documents from 32 countries and 6 international organisations over the last 39 years. In general, using shielding is recommended only under two conditions: if it does not compromise the diagnostic task and the performance of the procedure and/or if it reassures the patient and comforters that they are appropriately protected against potentially harmful effects of radiation. There are very few specific regulatory requirements to use shielding in a particular imaging modality, although they may consider use of shielding either as part of good radiological practice or as requirements for availability of protective or ancillary tools, without further specification of their use. There is a wide variety of positions among documents that recommend out-of-field shielding, those that do not recommend it and those that are not specific. Therefore, evidence-based consensus is still needed to ensure best and consistent practice.
T2  - Physica Medica
T1  - Use of out-of-field contact shielding on patients in medical imaging: A review of current guidelines, recommendations and legislative documents
VL  - 86
SP  - 44
EP  - 56
DO  - 10.1016/j.ejmp.2021.05.017
ER  - 

@article{
author = "Candela-Juan, Cristian and Ciraj-Bjelac, Olivera and Sans Merce, Marta and Dabin, Jérémie and Faj, Dario and Gallagher, Aoife and de las Heras Gala, Hugo and Knežević, Željka and Malchair, Françoise and De Monte, Francesca and Simantirakis, George and Theodorakou, Chrysoula",
year = "2021",
abstract = "The use of patient contact-shielding has become a topic of intensive scientific debate. While it has been common practice during the last decades, some studies have questioned the efficiency of using such shielding while others have highlighted the inconsistencies in its application. The objective of this work is to review current recommendations and legislative documents on the use of out-of-field shielding in X-ray imaging, including those from national authorities and from international and national organisations and professional bodies. The review, performed within the framework of the activities of EURADOS Working Group 12, covers available recommendations on use of contact shielding in adult, pregnant and paediatric patients in general radiography, fluoroscopy, computed tomography, mammography and dental radiology. It includes a comprehensive search of 83 documents from 32 countries and 6 international organisations over the last 39 years. In general, using shielding is recommended only under two conditions: if it does not compromise the diagnostic task and the performance of the procedure and/or if it reassures the patient and comforters that they are appropriately protected against potentially harmful effects of radiation. There are very few specific regulatory requirements to use shielding in a particular imaging modality, although they may consider use of shielding either as part of good radiological practice or as requirements for availability of protective or ancillary tools, without further specification of their use. There is a wide variety of positions among documents that recommend out-of-field shielding, those that do not recommend it and those that are not specific. Therefore, evidence-based consensus is still needed to ensure best and consistent practice.",
journal = "Physica Medica",
title = "Use of out-of-field contact shielding on patients in medical imaging: A review of current guidelines, recommendations and legislative documents",
volume = "86",
pages = "44-56",
doi = "10.1016/j.ejmp.2021.05.017"
}

Candela-Juan, C., Ciraj-Bjelac, O., Sans Merce, M., Dabin, J., Faj, D., Gallagher, A., de las Heras Gala, H., Knežević, Ž., Malchair, F., De Monte, F., Simantirakis, G.,& Theodorakou, C.. (2021). Use of out-of-field contact shielding on patients in medical imaging: A review of current guidelines, recommendations and legislative documents. in Physica Medica, 86, 44-56.
https://doi.org/10.1016/j.ejmp.2021.05.017

Candela-Juan C, Ciraj-Bjelac O, Sans Merce M, Dabin J, Faj D, Gallagher A, de las Heras Gala H, Knežević Ž, Malchair F, De Monte F, Simantirakis G, Theodorakou C. Use of out-of-field contact shielding on patients in medical imaging: A review of current guidelines, recommendations and legislative documents. in Physica Medica. 2021;86:44-56.
doi:10.1016/j.ejmp.2021.05.017 .

Candela-Juan, Cristian, Ciraj-Bjelac, Olivera, Sans Merce, Marta, Dabin, Jérémie, Faj, Dario, Gallagher, Aoife, de las Heras Gala, Hugo, Knežević, Željka, Malchair, Françoise, De Monte, Francesca, Simantirakis, George, Theodorakou, Chrysoula, "Use of out-of-field contact shielding on patients in medical imaging: A review of current guidelines, recommendations and legislative documents" in Physica Medica, 86 (2021):44-56,
https://doi.org/10.1016/j.ejmp.2021.05.017 . .

TY  - JOUR
AU  - Siiskonen, Teemu
AU  - Gallagher, Aoife
AU  - Ciraj-Bjelac, Olivera
AU  - Novak, Leos
AU  - Sans Merce, Marta
AU  - Farah, Jad
AU  - Dabin, Jérémie
AU  - Malchair, Françoise
AU  - Knežević, Željka
AU  - Kortesniemi, Mika
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9838
AB  - Cone beam computed tomography (CBCT) has been available since the late 1990s for use in dentistry. European legislation requires optimisation of protection and the use of diagnostic reference levels (DRLs) as well as regular quality control (QC) of the imaging devices, which is well outlined in existing international recommendations. Nevertheless, the level of application is not known. Earlier studies have indicated that few European countries have established DRLs and that patient doses (exposure parameters) have not been properly optimised. The EURADOS Working Group 12-Dosimetry in Medical Imaging undertook a survey to identify existing practices in Member States. Questionnaires were developed to identify equipment types, clinical procedures performed, and exposure settings used. The surveys were circulated to 22 countries resulting in 28 responses from 13 countries. Variations were identified in the exposure factors and in the doses delivered to patients for similar clinical indicators. Results confirm that patient doses are still not properly optimised and DRLs are largely not established. There is a need to promote the importance of performing QC testing of dental CBCT equipment and to further optimise patient exposure by establishment and use of DRLs as a part of a continuous optimisation process.
T2  - Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
T1  - A European perspective on dental cone beam computed tomography systems with a focus on optimisation utilising diagnostic reference levels
VL  - 41
IS  - 2
DO  - 10.1088/1361-6498/abdd05
ER  - 

@article{
author = "Siiskonen, Teemu and Gallagher, Aoife and Ciraj-Bjelac, Olivera and Novak, Leos and Sans Merce, Marta and Farah, Jad and Dabin, Jérémie and Malchair, Françoise and Knežević, Željka and Kortesniemi, Mika",
year = "2021",
abstract = "Cone beam computed tomography (CBCT) has been available since the late 1990s for use in dentistry. European legislation requires optimisation of protection and the use of diagnostic reference levels (DRLs) as well as regular quality control (QC) of the imaging devices, which is well outlined in existing international recommendations. Nevertheless, the level of application is not known. Earlier studies have indicated that few European countries have established DRLs and that patient doses (exposure parameters) have not been properly optimised. The EURADOS Working Group 12-Dosimetry in Medical Imaging undertook a survey to identify existing practices in Member States. Questionnaires were developed to identify equipment types, clinical procedures performed, and exposure settings used. The surveys were circulated to 22 countries resulting in 28 responses from 13 countries. Variations were identified in the exposure factors and in the doses delivered to patients for similar clinical indicators. Results confirm that patient doses are still not properly optimised and DRLs are largely not established. There is a need to promote the importance of performing QC testing of dental CBCT equipment and to further optimise patient exposure by establishment and use of DRLs as a part of a continuous optimisation process.",
journal = "Journal of Radiological Protection: Official Journal of the Society for Radiological Protection",
title = "A European perspective on dental cone beam computed tomography systems with a focus on optimisation utilising diagnostic reference levels",
volume = "41",
number = "2",
doi = "10.1088/1361-6498/abdd05"
}

Siiskonen, T., Gallagher, A., Ciraj-Bjelac, O., Novak, L., Sans Merce, M., Farah, J., Dabin, J., Malchair, F., Knežević, Ž.,& Kortesniemi, M.. (2021). A European perspective on dental cone beam computed tomography systems with a focus on optimisation utilising diagnostic reference levels. in Journal of Radiological Protection: Official Journal of the Society for Radiological Protection, 41(2).
https://doi.org/10.1088/1361-6498/abdd05

Siiskonen T, Gallagher A, Ciraj-Bjelac O, Novak L, Sans Merce M, Farah J, Dabin J, Malchair F, Knežević Ž, Kortesniemi M. A European perspective on dental cone beam computed tomography systems with a focus on optimisation utilising diagnostic reference levels. in Journal of Radiological Protection: Official Journal of the Society for Radiological Protection. 2021;41(2).
doi:10.1088/1361-6498/abdd05 .

Siiskonen, Teemu, Gallagher, Aoife, Ciraj-Bjelac, Olivera, Novak, Leos, Sans Merce, Marta, Farah, Jad, Dabin, Jérémie, Malchair, Françoise, Knežević, Željka, Kortesniemi, Mika, "A European perspective on dental cone beam computed tomography systems with a focus on optimisation utilising diagnostic reference levels" in Journal of Radiological Protection: Official Journal of the Society for Radiological Protection, 41, no. 2 (2021),
https://doi.org/10.1088/1361-6498/abdd05 . .

TY  - CONF
AU  - Živanović, Miloš
AU  - Morosh, Viacheslav
AU  - Kržanović, Nikola
AU  - Iurlaro, Giorgia
AU  - Bell, Steven
AU  - Sangiorgi, Marco
AU  - Pantelić, Gordana K.
AU  - Ciraj-Bjelac, Olivera
AU  - Đaletić, Miloš
AU  - Sperandio, Luciano
AU  - Ioannidis, Sotiris
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11138
PB  - RAD Centre, Niš, Serbia
C3  - RAD 2020 : 8th International Conference on Radiation in Various Fields of Research : book of abstracts; Virtual Conference
T1  - Testing of low-cost dosimeters used in non-governmental networks within 16ENV04 Preparedness project
SP  - 93
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11138
ER  - 

@conference{
author = "Živanović, Miloš and Morosh, Viacheslav and Kržanović, Nikola and Iurlaro, Giorgia and Bell, Steven and Sangiorgi, Marco and Pantelić, Gordana K. and Ciraj-Bjelac, Olivera and Đaletić, Miloš and Sperandio, Luciano and Ioannidis, Sotiris",
year = "2020",
publisher = "RAD Centre, Niš, Serbia",
journal = "RAD 2020 : 8th International Conference on Radiation in Various Fields of Research : book of abstracts; Virtual Conference",
title = "Testing of low-cost dosimeters used in non-governmental networks within 16ENV04 Preparedness project",
pages = "93",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11138"
}

Živanović, M., Morosh, V., Kržanović, N., Iurlaro, G., Bell, S., Sangiorgi, M., Pantelić, G. K., Ciraj-Bjelac, O., Đaletić, M., Sperandio, L.,& Ioannidis, S.. (2020). Testing of low-cost dosimeters used in non-governmental networks within 16ENV04 Preparedness project. in RAD 2020 : 8th International Conference on Radiation in Various Fields of Research : book of abstracts; Virtual Conference
RAD Centre, Niš, Serbia., 93.
https://hdl.handle.net/21.15107/rcub_vinar_11138

Živanović M, Morosh V, Kržanović N, Iurlaro G, Bell S, Sangiorgi M, Pantelić GK, Ciraj-Bjelac O, Đaletić M, Sperandio L, Ioannidis S. Testing of low-cost dosimeters used in non-governmental networks within 16ENV04 Preparedness project. in RAD 2020 : 8th International Conference on Radiation in Various Fields of Research : book of abstracts; Virtual Conference. 2020;:93.
https://hdl.handle.net/21.15107/rcub_vinar_11138 .

Živanović, Miloš, Morosh, Viacheslav, Kržanović, Nikola, Iurlaro, Giorgia, Bell, Steven, Sangiorgi, Marco, Pantelić, Gordana K., Ciraj-Bjelac, Olivera, Đaletić, Miloš, Sperandio, Luciano, Ioannidis, Sotiris, "Testing of low-cost dosimeters used in non-governmental networks within 16ENV04 Preparedness project" in RAD 2020 : 8th International Conference on Radiation in Various Fields of Research : book of abstracts; Virtual Conference (2020):93,
https://hdl.handle.net/21.15107/rcub_vinar_11138 .

TY  - CONF
AU  - Kržanović, Nikola
AU  - Živanović, Miloš
AU  - Morosh, Viacheslav
AU  - Neumaier, Stefan
AU  - Röttger, Annette
AU  - Iurlaro, Giorgia
AU  - Bell, Stevan
AU  - Sangiorgi, Marco
AU  - Ciraj-Bjelac, Olivera
AU  - Pantelić, Gordana
AU  - Đaletić, Miloš
AU  - Sperandio, Luciano
AU  - Ioannidis, Sotiris
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11905
AB  - Non-governmental networks for environmental monitoring employ a wide range of radiation protection instruments from different manufacturers, which provide the public with often unreliable dosimetric data. These Measuring Instruments in Non-governmental Networks (MINN) are mostly based on Geiger-Muller tube gas detectors, which represent low-cost easily operated instruments. An extensive testing of these devices was performed in order to validate the data acquired with MINN within the 16ENV04 Preparedness EMPIR project. In total, 16 different dosemter types were selected, with a sample size of four dosemeters per dosemeter type. Performance testing included the energy dependence and the linearity tests of the dosemeter response. Additionally, during the Researcher Mobility Grant associated with the 16ENV04 project, two Geiger-Muller based dosemeter types, with a sample size of two dosemeters per type were included in the testing. These instruments were subjected to the angular dependence testing in both horizontal and vertical planes, besides the energy dependence and linearity tests in the reference Cs-137 field at Physikalisch-Technische Bundesanstalt (PTB). For all the dosemeter types, inherent background, response to secondary cosmic radiation and the response to small changes of dose rate were determined at the metrological facilities of PTB. The sensitivity of the measuring instruments used in non-governmental networks to small variations of the ambient dose equivalent rate was examined by exposing the dosemeters to low dose rate Cs-137, Co-60 and Ra-226 radiation sources, in order to estimate the effect of environmental radioactive contamination with artificially produced radionuclides. For the comparison purposes, besides the measuring instruments used in non-governmental networks, a previously characterized CdZnTe-based spectrodosemeter was irradiated with the aforementioned radiation fields. The measured values were compared with a reference Reuter-Stokes ionisation chamber used for low-dose rate level measurements.
PB  - Niš : Sievert Association
C3  - RAP 2020 : International conference on radiation applications; Book of abstracts
T1  - Testing of the measuring instruments in non-governmental networks for the purpose of environmental monitoring of ionising radiation
SP  - 11
EP  - 11
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11905
ER  - 

@conference{
author = "Kržanović, Nikola and Živanović, Miloš and Morosh, Viacheslav and Neumaier, Stefan and Röttger, Annette and Iurlaro, Giorgia and Bell, Stevan and Sangiorgi, Marco and Ciraj-Bjelac, Olivera and Pantelić, Gordana and Đaletić, Miloš and Sperandio, Luciano and Ioannidis, Sotiris",
year = "2020",
abstract = "Non-governmental networks for environmental monitoring employ a wide range of radiation protection instruments from different manufacturers, which provide the public with often unreliable dosimetric data. These Measuring Instruments in Non-governmental Networks (MINN) are mostly based on Geiger-Muller tube gas detectors, which represent low-cost easily operated instruments. An extensive testing of these devices was performed in order to validate the data acquired with MINN within the 16ENV04 Preparedness EMPIR project. In total, 16 different dosemter types were selected, with a sample size of four dosemeters per dosemeter type. Performance testing included the energy dependence and the linearity tests of the dosemeter response. Additionally, during the Researcher Mobility Grant associated with the 16ENV04 project, two Geiger-Muller based dosemeter types, with a sample size of two dosemeters per type were included in the testing. These instruments were subjected to the angular dependence testing in both horizontal and vertical planes, besides the energy dependence and linearity tests in the reference Cs-137 field at Physikalisch-Technische Bundesanstalt (PTB). For all the dosemeter types, inherent background, response to secondary cosmic radiation and the response to small changes of dose rate were determined at the metrological facilities of PTB. The sensitivity of the measuring instruments used in non-governmental networks to small variations of the ambient dose equivalent rate was examined by exposing the dosemeters to low dose rate Cs-137, Co-60 and Ra-226 radiation sources, in order to estimate the effect of environmental radioactive contamination with artificially produced radionuclides. For the comparison purposes, besides the measuring instruments used in non-governmental networks, a previously characterized CdZnTe-based spectrodosemeter was irradiated with the aforementioned radiation fields. The measured values were compared with a reference Reuter-Stokes ionisation chamber used for low-dose rate level measurements.",
publisher = "Niš : Sievert Association",
journal = "RAP 2020 : International conference on radiation applications; Book of abstracts",
title = "Testing of the measuring instruments in non-governmental networks for the purpose of environmental monitoring of ionising radiation",
pages = "11-11",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11905"
}

Kržanović, N., Živanović, M., Morosh, V., Neumaier, S., Röttger, A., Iurlaro, G., Bell, S., Sangiorgi, M., Ciraj-Bjelac, O., Pantelić, G., Đaletić, M., Sperandio, L.,& Ioannidis, S.. (2020). Testing of the measuring instruments in non-governmental networks for the purpose of environmental monitoring of ionising radiation. in RAP 2020 : International conference on radiation applications; Book of abstracts
Niš : Sievert Association., 11-11.
https://hdl.handle.net/21.15107/rcub_vinar_11905

Kržanović N, Živanović M, Morosh V, Neumaier S, Röttger A, Iurlaro G, Bell S, Sangiorgi M, Ciraj-Bjelac O, Pantelić G, Đaletić M, Sperandio L, Ioannidis S. Testing of the measuring instruments in non-governmental networks for the purpose of environmental monitoring of ionising radiation. in RAP 2020 : International conference on radiation applications; Book of abstracts. 2020;:11-11.
https://hdl.handle.net/21.15107/rcub_vinar_11905 .

Kržanović, Nikola, Živanović, Miloš, Morosh, Viacheslav, Neumaier, Stefan, Röttger, Annette, Iurlaro, Giorgia, Bell, Stevan, Sangiorgi, Marco, Ciraj-Bjelac, Olivera, Pantelić, Gordana, Đaletić, Miloš, Sperandio, Luciano, Ioannidis, Sotiris, "Testing of the measuring instruments in non-governmental networks for the purpose of environmental monitoring of ionising radiation" in RAP 2020 : International conference on radiation applications; Book of abstracts (2020):11-11,
https://hdl.handle.net/21.15107/rcub_vinar_11905 .

TY  - CONF
AU  - Kržanović, Nikola
AU  - Živanović, Miloš
AU  - Ciraj-Bjelac, Olivera
AU  - Božović, Predrag
AU  - Kojić, Andrea
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11904
AB  - Quality assurance in the area of diagnostic radiology is performed by examining X-ray output parameters under medical exposure irradiation conditions using calibrated dosimetry equipment. The diagnostic radiology dosimeters are calibrated in reference radiation fields established according to IEC 61267 international standard. In practice, radiation qualities are defined by the X-ray tube voltage and the half-value layer and homogeneity coefficient. Comparison of these parameters with the recommendations of the standard can be used for incident photon spectrum characterization and modification by improving the added filtration for each radiation quality, thus acquiring the desired half-value layer for the given X-ray tube voltage. For most of the diagnostic radiology radiation qualities available at the Secondary Standard Dosimetry Laboratory a deviation of the first half-value layer less than ±3% was achieved, with an exception of one radiation quality where a correction would be required.
PB  - Belgrade : ETRAN Society
PB  - Belgrade : Academic Mind
C3  - IcETRAN 2020 : 7th International Conference on Electrical, Electronic and Computing Engineering and ETRAN 2020 : 64th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering; Proceedings book
T1  - Establishing the RQR radiation qualities in the Secondary Standard Dosimetry Laboratory
SP  - 541
EP  - 544
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11904
ER  - 

@conference{
author = "Kržanović, Nikola and Živanović, Miloš and Ciraj-Bjelac, Olivera and Božović, Predrag and Kojić, Andrea",
year = "2020",
abstract = "Quality assurance in the area of diagnostic radiology is performed by examining X-ray output parameters under medical exposure irradiation conditions using calibrated dosimetry equipment. The diagnostic radiology dosimeters are calibrated in reference radiation fields established according to IEC 61267 international standard. In practice, radiation qualities are defined by the X-ray tube voltage and the half-value layer and homogeneity coefficient. Comparison of these parameters with the recommendations of the standard can be used for incident photon spectrum characterization and modification by improving the added filtration for each radiation quality, thus acquiring the desired half-value layer for the given X-ray tube voltage. For most of the diagnostic radiology radiation qualities available at the Secondary Standard Dosimetry Laboratory a deviation of the first half-value layer less than ±3% was achieved, with an exception of one radiation quality where a correction would be required.",
publisher = "Belgrade : ETRAN Society, Belgrade : Academic Mind",
journal = "IcETRAN 2020 : 7th International Conference on Electrical, Electronic and Computing Engineering and ETRAN 2020 : 64th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering; Proceedings book",
title = "Establishing the RQR radiation qualities in the Secondary Standard Dosimetry Laboratory",
pages = "541-544",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11904"
}

Kržanović, N., Živanović, M., Ciraj-Bjelac, O., Božović, P.,& Kojić, A.. (2020). Establishing the RQR radiation qualities in the Secondary Standard Dosimetry Laboratory. in IcETRAN 2020 : 7th International Conference on Electrical, Electronic and Computing Engineering and ETRAN 2020 : 64th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering; Proceedings book
Belgrade : ETRAN Society., 541-544.
https://hdl.handle.net/21.15107/rcub_vinar_11904

Kržanović N, Živanović M, Ciraj-Bjelac O, Božović P, Kojić A. Establishing the RQR radiation qualities in the Secondary Standard Dosimetry Laboratory. in IcETRAN 2020 : 7th International Conference on Electrical, Electronic and Computing Engineering and ETRAN 2020 : 64th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering; Proceedings book. 2020;:541-544.
https://hdl.handle.net/21.15107/rcub_vinar_11904 .

Kržanović, Nikola, Živanović, Miloš, Ciraj-Bjelac, Olivera, Božović, Predrag, Kojić, Andrea, "Establishing the RQR radiation qualities in the Secondary Standard Dosimetry Laboratory" in IcETRAN 2020 : 7th International Conference on Electrical, Electronic and Computing Engineering and ETRAN 2020 : 64th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering; Proceedings book (2020):541-544,
https://hdl.handle.net/21.15107/rcub_vinar_11904 .

TY  - CONF
AU  - Kržanović, Nikola
AU  - Živanović, Miloš
AU  - Petrović, Borislava
AU  - Stanković, Srboljub
AU  - Ciraj-Bjelac, Olivera
AU  - Đaletić, Miloš
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11906
AB  - Determination of dose in radiotherapy requires highly accurate dose measurements. Such measurements can only be performed by trained and competent staff, with calibrated equipment and QA/QC procedures in place. Chambers that are used for clinical measurements are usually calibrated in Secondary Standards Dosimetry laboratories in terms of dose to water. Calibrations are performed in water phantoms, usually in Co-60 beams at the depth of 5 cm. Chamber positioning is critical, because deviation from reference position of 1 mm along the beam axis introduces additional standard uncertainty of 0.5%. Deviation from reference position in other two directions is less important – standard beam size for radiotherapy calibrations is 10 cm x 10 cm, and beam non-uniformity within several millimeters of the beam center is usually insignificant. Chamber positioning can be achieved by using special chamber sleeves, made of PMMA or other water equivalent materials. This allows precise and easy positioning, but only in case that the sleeve is specifically made for the phantom type and chamber type. Other option is using screws and clamps, but human errors are more probable in this case. There is also a high risk for chamber to be tilted along one of the axes, especially for waterproof chambers with rigid plastic-coated cables, which are often curved from storage inside the boxes. A waterproof IBA CC13 chamber was calibrated in terms of dose to water in Co-60 beam. Even though appropriate chamber sleeve was available, the chamber could not fit due to thicker chamber stem. Chamber was calibrated placed directly in water, by using clamps, and this value was considered as the reference value, because it is obtained according to standard protocols. Chamber was also calibrated in two sleeves designed for larger chambers – first with air gap between chamber and sleeve wall, and second in sleeves filled with water. There was measurable difference between reference position and chamber center in the plane normal to the beam axis – 3 mm and 7 mm for two sleeves. For both sleeves, calibration coefficient increased when the sleeve was filled with water. The increase was 0.7% for larger sleeve and 0.4% for smaller. Maximum difference between reference value and calibration coefficient obtained when using sleeves was 0.5%. The differences are statistically significant when sleeves are dry, but when sleeves are filled with water, differences are smaller than statistical fluctuations. The effect of inappropriate sleeve can be taken into account by increasing the measurement uncertainty. In this case, the uncertainty was estimated at 0.5% with rectangular probability distribution and k=1.73. The combined expanded uncertainty of calibration coefficient was increased from 1.2 % to 1.3 %, which is still within the uncertainty goals. This approach can be used for other calibrations, but uncertainty should be estimated in different laboratories and for different chamber types.
PB  - Niš : Sievert Association
C3  - RAP 2020 : International conference on radiation applications; Book of abstracts
T1  - Influence of air gap and chamber positioning on radiotherapy chamber calibrations
SP  - 12
EP  - 12
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11906
ER  - 

@conference{
author = "Kržanović, Nikola and Živanović, Miloš and Petrović, Borislava and Stanković, Srboljub and Ciraj-Bjelac, Olivera and Đaletić, Miloš",
year = "2020",
abstract = "Determination of dose in radiotherapy requires highly accurate dose measurements. Such measurements can only be performed by trained and competent staff, with calibrated equipment and QA/QC procedures in place. Chambers that are used for clinical measurements are usually calibrated in Secondary Standards Dosimetry laboratories in terms of dose to water. Calibrations are performed in water phantoms, usually in Co-60 beams at the depth of 5 cm. Chamber positioning is critical, because deviation from reference position of 1 mm along the beam axis introduces additional standard uncertainty of 0.5%. Deviation from reference position in other two directions is less important – standard beam size for radiotherapy calibrations is 10 cm x 10 cm, and beam non-uniformity within several millimeters of the beam center is usually insignificant. Chamber positioning can be achieved by using special chamber sleeves, made of PMMA or other water equivalent materials. This allows precise and easy positioning, but only in case that the sleeve is specifically made for the phantom type and chamber type. Other option is using screws and clamps, but human errors are more probable in this case. There is also a high risk for chamber to be tilted along one of the axes, especially for waterproof chambers with rigid plastic-coated cables, which are often curved from storage inside the boxes. A waterproof IBA CC13 chamber was calibrated in terms of dose to water in Co-60 beam. Even though appropriate chamber sleeve was available, the chamber could not fit due to thicker chamber stem. Chamber was calibrated placed directly in water, by using clamps, and this value was considered as the reference value, because it is obtained according to standard protocols. Chamber was also calibrated in two sleeves designed for larger chambers – first with air gap between chamber and sleeve wall, and second in sleeves filled with water. There was measurable difference between reference position and chamber center in the plane normal to the beam axis – 3 mm and 7 mm for two sleeves. For both sleeves, calibration coefficient increased when the sleeve was filled with water. The increase was 0.7% for larger sleeve and 0.4% for smaller. Maximum difference between reference value and calibration coefficient obtained when using sleeves was 0.5%. The differences are statistically significant when sleeves are dry, but when sleeves are filled with water, differences are smaller than statistical fluctuations. The effect of inappropriate sleeve can be taken into account by increasing the measurement uncertainty. In this case, the uncertainty was estimated at 0.5% with rectangular probability distribution and k=1.73. The combined expanded uncertainty of calibration coefficient was increased from 1.2 % to 1.3 %, which is still within the uncertainty goals. This approach can be used for other calibrations, but uncertainty should be estimated in different laboratories and for different chamber types.",
publisher = "Niš : Sievert Association",
journal = "RAP 2020 : International conference on radiation applications; Book of abstracts",
title = "Influence of air gap and chamber positioning on radiotherapy chamber calibrations",
pages = "12-12",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11906"
}

Kržanović, N., Živanović, M., Petrović, B., Stanković, S., Ciraj-Bjelac, O.,& Đaletić, M.. (2020). Influence of air gap and chamber positioning on radiotherapy chamber calibrations. in RAP 2020 : International conference on radiation applications; Book of abstracts
Niš : Sievert Association., 12-12.
https://hdl.handle.net/21.15107/rcub_vinar_11906

Kržanović N, Živanović M, Petrović B, Stanković S, Ciraj-Bjelac O, Đaletić M. Influence of air gap and chamber positioning on radiotherapy chamber calibrations. in RAP 2020 : International conference on radiation applications; Book of abstracts. 2020;:12-12.
https://hdl.handle.net/21.15107/rcub_vinar_11906 .

Kržanović, Nikola, Živanović, Miloš, Petrović, Borislava, Stanković, Srboljub, Ciraj-Bjelac, Olivera, Đaletić, Miloš, "Influence of air gap and chamber positioning on radiotherapy chamber calibrations" in RAP 2020 : International conference on radiation applications; Book of abstracts (2020):12-12,
https://hdl.handle.net/21.15107/rcub_vinar_11906 .

TY  - JOUR
AU  - Vanhavere, Filip
AU  - Carinou, Eleftheria
AU  - Clairand, Isabelle
AU  - Ciraj-Bjelac, Olivera
AU  - De Monte, F
AU  - Domienik-Andrzejewska, J
AU  - Ferrari, P
AU  - Ginjaume, M
AU  - Hršak, Hrvoje
AU  - Hupe, O
AU  - Knežević, Željka
AU  - O’Connor, U
AU  - Merce, M Sans
AU  - Sarmento, S
AU  - Savary, A
AU  - Siskoonen, T
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9051
AB  - Medical staff in interventional procedures are among the professionals with the highest occupational doses. Active personal dosemeters (APDs) can help in optimizing the exposure during interventional procedures. However, there can be problems when using APDs during interventional procedures, due to the specific energy and angular distribution of the radiation field and because of the pulsed nature of the radiation. Many parameters like the type of interventional procedure, personal habits and working techniques, protection tools used and X-ray field characteristics influence the occupational exposure and the scattered radiation around the patient. In this paper, we compare the results from three types of APDs with a passive personal dosimetry system while being used in real clinical environment by the interventional staff. The results show that there is a large spread in the ratios of the passive and active devices.
T2  - Radiation Protection Dosimetry
T1  - The use of active personal dosemeters in interventional workplaces in hospitals: comparison between active and passive dosemeters worn simultaneously by medical staff
VL  - 188
IS  - 1
SP  - 22
EP  - 29
DO  - 10.1093/rpd/ncz253
ER  - 

@article{
author = "Vanhavere, Filip and Carinou, Eleftheria and Clairand, Isabelle and Ciraj-Bjelac, Olivera and De Monte, F and Domienik-Andrzejewska, J and Ferrari, P and Ginjaume, M and Hršak, Hrvoje and Hupe, O and Knežević, Željka and O’Connor, U and Merce, M Sans and Sarmento, S and Savary, A and Siskoonen, T",
year = "2020",
abstract = "Medical staff in interventional procedures are among the professionals with the highest occupational doses. Active personal dosemeters (APDs) can help in optimizing the exposure during interventional procedures. However, there can be problems when using APDs during interventional procedures, due to the specific energy and angular distribution of the radiation field and because of the pulsed nature of the radiation. Many parameters like the type of interventional procedure, personal habits and working techniques, protection tools used and X-ray field characteristics influence the occupational exposure and the scattered radiation around the patient. In this paper, we compare the results from three types of APDs with a passive personal dosimetry system while being used in real clinical environment by the interventional staff. The results show that there is a large spread in the ratios of the passive and active devices.",
journal = "Radiation Protection Dosimetry",
title = "The use of active personal dosemeters in interventional workplaces in hospitals: comparison between active and passive dosemeters worn simultaneously by medical staff",
volume = "188",
number = "1",
pages = "22-29",
doi = "10.1093/rpd/ncz253"
}

Vanhavere, F., Carinou, E., Clairand, I., Ciraj-Bjelac, O., De Monte, F., Domienik-Andrzejewska, J., Ferrari, P., Ginjaume, M., Hršak, H., Hupe, O., Knežević, Ž., O’Connor, U., Merce, M. S., Sarmento, S., Savary, A.,& Siskoonen, T.. (2020). The use of active personal dosemeters in interventional workplaces in hospitals: comparison between active and passive dosemeters worn simultaneously by medical staff. in Radiation Protection Dosimetry, 188(1), 22-29.
https://doi.org/10.1093/rpd/ncz253

Vanhavere F, Carinou E, Clairand I, Ciraj-Bjelac O, De Monte F, Domienik-Andrzejewska J, Ferrari P, Ginjaume M, Hršak H, Hupe O, Knežević Ž, O’Connor U, Merce MS, Sarmento S, Savary A, Siskoonen T. The use of active personal dosemeters in interventional workplaces in hospitals: comparison between active and passive dosemeters worn simultaneously by medical staff. in Radiation Protection Dosimetry. 2020;188(1):22-29.
doi:10.1093/rpd/ncz253 .

Vanhavere, Filip, Carinou, Eleftheria, Clairand, Isabelle, Ciraj-Bjelac, Olivera, De Monte, F, Domienik-Andrzejewska, J, Ferrari, P, Ginjaume, M, Hršak, Hrvoje, Hupe, O, Knežević, Željka, O’Connor, U, Merce, M Sans, Sarmento, S, Savary, A, Siskoonen, T, "The use of active personal dosemeters in interventional workplaces in hospitals: comparison between active and passive dosemeters worn simultaneously by medical staff" in Radiation Protection Dosimetry, 188, no. 1 (2020):22-29,
https://doi.org/10.1093/rpd/ncz253 . .

TY  - JOUR
AU  - Krajinović, Marko
AU  - Dobrić, Milan R.
AU  - Ciraj-Bjelac, Olivera
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9066
AB  - Numerous cases of radiation-induced tissue reactions following interventional cardiology (IC) procedures have been reported, resulting in the need for an optimized and personalized dosimetry. At present, there are many fluoroscopy units without Digital Imaging and Communications in Medicine (DICOM) Radiation Dose Structured Report globally installed. Many of these have not been updated yet, and may never be, therefore, the main objectives of this paper are to develop an offline skin dose mapping application, which uses DICOM headers for the peak skin dose (PSD) assessment and to compare the PSD assessment results to XR-RV3 Gafchromic film for common IC procedures. The mean deviation between the measured and the calculated PSD was 8.7 ± 26.3%. Simulated skin dose map showed good matching with XR-RV3 Gafchromic film. The skin dose mapping application presented in this paper is an elegant solution and a suitable alternative to XR-RV3 Gafchromic film.
T2  - Radiation Protection Dosimetry
T1  - Skin dose mapping in interventional cardiology: a practical solution
VL  - 188
IS  - 4
SP  - 508
EP  - 515
DO  - 10.1093/rpd/ncaa002
ER  - 

@article{
author = "Krajinović, Marko and Dobrić, Milan R. and Ciraj-Bjelac, Olivera",
year = "2020",
abstract = "Numerous cases of radiation-induced tissue reactions following interventional cardiology (IC) procedures have been reported, resulting in the need for an optimized and personalized dosimetry. At present, there are many fluoroscopy units without Digital Imaging and Communications in Medicine (DICOM) Radiation Dose Structured Report globally installed. Many of these have not been updated yet, and may never be, therefore, the main objectives of this paper are to develop an offline skin dose mapping application, which uses DICOM headers for the peak skin dose (PSD) assessment and to compare the PSD assessment results to XR-RV3 Gafchromic film for common IC procedures. The mean deviation between the measured and the calculated PSD was 8.7 ± 26.3%. Simulated skin dose map showed good matching with XR-RV3 Gafchromic film. The skin dose mapping application presented in this paper is an elegant solution and a suitable alternative to XR-RV3 Gafchromic film.",
journal = "Radiation Protection Dosimetry",
title = "Skin dose mapping in interventional cardiology: a practical solution",
volume = "188",
number = "4",
pages = "508-515",
doi = "10.1093/rpd/ncaa002"
}

Krajinović, M., Dobrić, M. R.,& Ciraj-Bjelac, O.. (2020). Skin dose mapping in interventional cardiology: a practical solution. in Radiation Protection Dosimetry, 188(4), 508-515.
https://doi.org/10.1093/rpd/ncaa002

Krajinović M, Dobrić MR, Ciraj-Bjelac O. Skin dose mapping in interventional cardiology: a practical solution. in Radiation Protection Dosimetry. 2020;188(4):508-515.
doi:10.1093/rpd/ncaa002 .

Krajinović, Marko, Dobrić, Milan R., Ciraj-Bjelac, Olivera, "Skin dose mapping in interventional cardiology: a practical solution" in Radiation Protection Dosimetry, 188, no. 4 (2020):508-515,
https://doi.org/10.1093/rpd/ncaa002 . .

TY  - JOUR
AU  - AlNaemi, Huda
AU  - Aly, Antar
AU  - J Omar, Ahmed
AU  - AlObadli, Amal
AU  - Ciraj-Bjelac, Olivera
AU  - Kharita, Mohamad Hassan
AU  - Rehani, Madan M
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9102
AB  - In the absence of information on radiation doses in mammography in the Gulf countries, this study was designed to assess patient dose in terms of entrance surface air kerma and average glandular dose (AGD) in three mammography units in Qatar that covers 21% of all mammography systems in the country. The study of 150 patients involving 600 projections indicated that the average value of AGD in patients was 2.2 mGy for cranio-caudal and 2.5 mGy for mediolateral-oblique views, respectively. Dose assessment was also performed for polymethyl methacrylate phantoms of thicknesses, ranging from 20 to 80 mm. Comparing the patient dose values with several other publications in literature for full-field digital mammography, our values are typically higher, which can be likely attributed to the larger compressed breast thickness.
T2  - Radiation Protection Dosimetry
T1  - Evaluation of radiation dose for patients undergoing mammography in Qatar
VL  - 189
IS  - 3
SP  - 354
EP  - 361
DO  - 10.1093/rpd/ncaa049
ER  - 

@article{
author = "AlNaemi, Huda and Aly, Antar and J Omar, Ahmed and AlObadli, Amal and Ciraj-Bjelac, Olivera and Kharita, Mohamad Hassan and Rehani, Madan M",
year = "2020",
abstract = "In the absence of information on radiation doses in mammography in the Gulf countries, this study was designed to assess patient dose in terms of entrance surface air kerma and average glandular dose (AGD) in three mammography units in Qatar that covers 21% of all mammography systems in the country. The study of 150 patients involving 600 projections indicated that the average value of AGD in patients was 2.2 mGy for cranio-caudal and 2.5 mGy for mediolateral-oblique views, respectively. Dose assessment was also performed for polymethyl methacrylate phantoms of thicknesses, ranging from 20 to 80 mm. Comparing the patient dose values with several other publications in literature for full-field digital mammography, our values are typically higher, which can be likely attributed to the larger compressed breast thickness.",
journal = "Radiation Protection Dosimetry",
title = "Evaluation of radiation dose for patients undergoing mammography in Qatar",
volume = "189",
number = "3",
pages = "354-361",
doi = "10.1093/rpd/ncaa049"
}

AlNaemi, H., Aly, A., J Omar, A., AlObadli, A., Ciraj-Bjelac, O., Kharita, M. H.,& Rehani, M. M.. (2020). Evaluation of radiation dose for patients undergoing mammography in Qatar. in Radiation Protection Dosimetry, 189(3), 354-361.
https://doi.org/10.1093/rpd/ncaa049

AlNaemi H, Aly A, J Omar A, AlObadli A, Ciraj-Bjelac O, Kharita MH, Rehani MM. Evaluation of radiation dose for patients undergoing mammography in Qatar. in Radiation Protection Dosimetry. 2020;189(3):354-361.
doi:10.1093/rpd/ncaa049 .

AlNaemi, Huda, Aly, Antar, J Omar, Ahmed, AlObadli, Amal, Ciraj-Bjelac, Olivera, Kharita, Mohamad Hassan, Rehani, Madan M, "Evaluation of radiation dose for patients undergoing mammography in Qatar" in Radiation Protection Dosimetry, 189, no. 3 (2020):354-361,
https://doi.org/10.1093/rpd/ncaa049 . .

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

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

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

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

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

TY  - JOUR
AU  - Malchair, Françoise
AU  - Dabin, Jérémie
AU  - Deleu, Marine
AU  - Merce, Marta Sans
AU  - Ciraj-Bjelac, Olivera
AU  - Gallagher, Aoife
AU  - Maccia, Carlo
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9714
AB  - PurposeIn interventional cardiology, patients may be exposed to high doses to the skin resulting in skin burns following single or multiple procedures. Reviewing and analysing available software (online or offline) may help medical physicists assessing the maximum skin dose to the patient together with the dose distribution during (or after) these procedures.Method and resultsCapabilities and accuracy of available software were analysed through an extensive bibliography search and contacts with both vendor and authors. Their markedly differed among developers. In total, 22 software were identified and reviewed according to their algorithms and their capabilities. Special attention was dedicated to their main features and limitations of interest for the intended clinical use. While the accuracy of the 12 software products validated with measurements on phantoms was acceptable (within ± 25%), the agreement was poor for the two products validated on patients (within ± 43% and ± 76%, respectively). In addition, no software has been validated on angiographic units from all manufacturers, though several software developers claimed vendor-independent transportability. Only one software allows for multiple procedures dose calculation.ConclusionLarge differences among vendors made it clear that work remains to be done before an accurate and reliable skin dose mapping is available for all patients.
T2  - Physica Medica
T1  - Review of skin dose calculation software in interventional cardiology
VL  - 80
SP  - 75
EP  - 83
DO  - 10.1016/j.ejmp.2020.09.023
ER  - 

@article{
author = "Malchair, Françoise and Dabin, Jérémie and Deleu, Marine and Merce, Marta Sans and Ciraj-Bjelac, Olivera and Gallagher, Aoife and Maccia, Carlo",
year = "2020",
abstract = "PurposeIn interventional cardiology, patients may be exposed to high doses to the skin resulting in skin burns following single or multiple procedures. Reviewing and analysing available software (online or offline) may help medical physicists assessing the maximum skin dose to the patient together with the dose distribution during (or after) these procedures.Method and resultsCapabilities and accuracy of available software were analysed through an extensive bibliography search and contacts with both vendor and authors. Their markedly differed among developers. In total, 22 software were identified and reviewed according to their algorithms and their capabilities. Special attention was dedicated to their main features and limitations of interest for the intended clinical use. While the accuracy of the 12 software products validated with measurements on phantoms was acceptable (within ± 25%), the agreement was poor for the two products validated on patients (within ± 43% and ± 76%, respectively). In addition, no software has been validated on angiographic units from all manufacturers, though several software developers claimed vendor-independent transportability. Only one software allows for multiple procedures dose calculation.ConclusionLarge differences among vendors made it clear that work remains to be done before an accurate and reliable skin dose mapping is available for all patients.",
journal = "Physica Medica",
title = "Review of skin dose calculation software in interventional cardiology",
volume = "80",
pages = "75-83",
doi = "10.1016/j.ejmp.2020.09.023"
}

Malchair, F., Dabin, J., Deleu, M., Merce, M. S., Ciraj-Bjelac, O., Gallagher, A.,& Maccia, C.. (2020). Review of skin dose calculation software in interventional cardiology. in Physica Medica, 80, 75-83.
https://doi.org/10.1016/j.ejmp.2020.09.023

Malchair F, Dabin J, Deleu M, Merce MS, Ciraj-Bjelac O, Gallagher A, Maccia C. Review of skin dose calculation software in interventional cardiology. in Physica Medica. 2020;80:75-83.
doi:10.1016/j.ejmp.2020.09.023 .

Malchair, Françoise, Dabin, Jérémie, Deleu, Marine, Merce, Marta Sans, Ciraj-Bjelac, Olivera, Gallagher, Aoife, Maccia, Carlo, "Review of skin dose calculation software in interventional cardiology" in Physica Medica, 80 (2020):75-83,
https://doi.org/10.1016/j.ejmp.2020.09.023 . .

TY  - CONF
AU  - Živanović, Miloš Z.
AU  - Neumaier, Stefan
AU  - Ciraj-Bjelac, Olivera
AU  - Pantelić, Gordana K.
AU  - Davidović, Miloš D.
AU  - Kržanović, Nikola
AU  - Stanković-Petrović, Jelena S.
PY  - 2019
UR  - https://plus.sr.cobiss.net/opac7/bib/279687436
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8695
AB  - 16ENV04 Preparedness je projekat iz poziva EMPIR 2016 za zaštitu životne sredine. Glavni cilj projekta je poboljšanje pripravnosti za nuklearne i radiološke incidente i akcidente, koji bi mogli da se dogode u budušnosti. Pripravnost će biti poboljšana tako što će se izvršiti istraživanja u nekoliko pravaca: upotreba bespilotnih letelica za radiološka merenja, upotreba mobilnih sistema za uzorkovanje vazduha, istraživanje mogućnosti  korišćenja radioloških podataka iz nevladinih mreža i korišćenje sistema pasivnih dozimetara za monitoring okoline. Još jedan od načina za poboljšanje pripravnosti je smanjenje  mogušnosti bezrazložne  panike  koja  bi  mogla  da  bude izazvana  diseminacijom merenja iz nevladinih mreža i drugih izvora, što bi moglo da izazove i smanjenje poverenja u zvanične podatke. U cilju realizacije projekta, od velikog značaja su diseminacija razultata i komunikacija sa svim zainteresovanim stranama.
AB  - 16ENV04 Preparedness is a research project within the EMPIR 2016environment call. The  main  project  goal  is  to  increase  the  preparedness  for  nuclear  and  radiological incidents  and  accidents  that  might  occur  in  the  future.  The  preparedness  will  be increased  by  pursuing  several  directions  of  research:  use  of  unmanned  aerial  vehicles for radiological measurements, use of transportable air-sampling systems, investigating the crowd sourced radiological data for possible official uses and investigating the use of passive dosimetry systems for ambient monitoring. Another aspect of preparedness is to try to reduce the possibility of unwarranted panic caused by the data disseminated by citizen  networks  and  other  sources  and  to  increase  confidence  in  official  data.  To realize the project goals, communication with stakeholders and dissemination of results are of greatest importance.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 30. симпозијум ДЗЗСЦГ : зборник радова
T1  - EMPIR projekat 16ENV04 Preparedness - glavni ciljevi i pravci istraživanja
T1  - EMPIR project 16ENV04 Preparedness - main goals and research directions
SP  - 144
EP  - 149
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8695
ER  - 

@conference{
author = "Živanović, Miloš Z. and Neumaier, Stefan and Ciraj-Bjelac, Olivera and Pantelić, Gordana K. and Davidović, Miloš D. and Kržanović, Nikola and Stanković-Petrović, Jelena S.",
year = "2019",
abstract = "16ENV04 Preparedness je projekat iz poziva EMPIR 2016 za zaštitu životne sredine. Glavni cilj projekta je poboljšanje pripravnosti za nuklearne i radiološke incidente i akcidente, koji bi mogli da se dogode u budušnosti. Pripravnost će biti poboljšana tako što će se izvršiti istraživanja u nekoliko pravaca: upotreba bespilotnih letelica za radiološka merenja, upotreba mobilnih sistema za uzorkovanje vazduha, istraživanje mogućnosti  korišćenja radioloških podataka iz nevladinih mreža i korišćenje sistema pasivnih dozimetara za monitoring okoline. Još jedan od načina za poboljšanje pripravnosti je smanjenje  mogušnosti bezrazložne  panike  koja  bi  mogla  da  bude izazvana  diseminacijom merenja iz nevladinih mreža i drugih izvora, što bi moglo da izazove i smanjenje poverenja u zvanične podatke. U cilju realizacije projekta, od velikog značaja su diseminacija razultata i komunikacija sa svim zainteresovanim stranama., 16ENV04 Preparedness is a research project within the EMPIR 2016environment call. The  main  project  goal  is  to  increase  the  preparedness  for  nuclear  and  radiological incidents  and  accidents  that  might  occur  in  the  future.  The  preparedness  will  be increased  by  pursuing  several  directions  of  research:  use  of  unmanned  aerial  vehicles for radiological measurements, use of transportable air-sampling systems, investigating the crowd sourced radiological data for possible official uses and investigating the use of passive dosimetry systems for ambient monitoring. Another aspect of preparedness is to try to reduce the possibility of unwarranted panic caused by the data disseminated by citizen  networks  and  other  sources  and  to  increase  confidence  in  official  data.  To realize the project goals, communication with stakeholders and dissemination of results are of greatest importance.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "30. симпозијум ДЗЗСЦГ : зборник радова",
title = "EMPIR projekat 16ENV04 Preparedness - glavni ciljevi i pravci istraživanja, EMPIR project 16ENV04 Preparedness - main goals and research directions",
pages = "144-149",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8695"
}

Živanović, M. Z., Neumaier, S., Ciraj-Bjelac, O., Pantelić, G. K., Davidović, M. D., Kržanović, N.,& Stanković-Petrović, J. S.. (2019). EMPIR projekat 16ENV04 Preparedness - glavni ciljevi i pravci istraživanja. in 30. симпозијум ДЗЗСЦГ : зборник радова
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 144-149.
https://hdl.handle.net/21.15107/rcub_vinar_8695

Živanović MZ, Neumaier S, Ciraj-Bjelac O, Pantelić GK, Davidović MD, Kržanović N, Stanković-Petrović JS. EMPIR projekat 16ENV04 Preparedness - glavni ciljevi i pravci istraživanja. in 30. симпозијум ДЗЗСЦГ : зборник радова. 2019;:144-149.
https://hdl.handle.net/21.15107/rcub_vinar_8695 .

Živanović, Miloš Z., Neumaier, Stefan, Ciraj-Bjelac, Olivera, Pantelić, Gordana K., Davidović, Miloš D., Kržanović, Nikola, Stanković-Petrović, Jelena S., "EMPIR projekat 16ENV04 Preparedness - glavni ciljevi i pravci istraživanja" in 30. симпозијум ДЗЗСЦГ : зборник радова (2019):144-149,
https://hdl.handle.net/21.15107/rcub_vinar_8695 .

TY  - CONF
AU  - Ciraj-Bjelac, Olivera
AU  - Živanović, Miloš Z.
AU  - Kržanović, Nikola
AU  - Pantelić, Gordana K.
AU  - Kaljević, Jelica
AU  - Stanković-Petrović, Jelena S.
AU  - Knežević-Medija, Željka
AU  - Majer, Marija
PY  - 2019
UR  - https://plus.sr.cobiss.net/opac7/bib/279687436
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8713
AB  - Jedan od zadataka projekta 16ENV04 Preparedness jeispitivanje pasivnih dozimetrijskih sistema namenjenih za merenje operativne dozimetrijske veličine H*(10). Cilj ovog zadatka je evaluacija i harmonizacija procedura koji koriste laboratorije u Evropi a odnose se na merenje ambijentlnog ekvivalenta doze,a u vezi eventualne primene ovakvih doziemtrisjkih sistema u kontekstu dleovanja u vanrednom događaju.
AB  - One of the outstanding tasks of the project 16ENV04 Preparedness, is to investigate the use of passive dosemeters aimed for measurement of operational quantityH*(10). The aim of this task is to develop a rationale to harmonize the procedures used by European measuring bodies and authorities, which provide services or fulfil tasks in radiation protection by using passive H*(10) area monitoring systems. Procedures used by European measuring bodies and services for environmental monitoring using passive area dosemeters are investigated, with a goal to investigate the applicability of passive dosimetry systems in the aftermath of a nuclear event.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 30. симпозијум ДЗЗСЦГ : зборник радова
T1  - Harmonizacija procedura za merenje ambijentalnog ekvivalta doze: primena pasivnih (10) dosimetrijskih sistema u Evropi
T1  - Harmonisation of dose measurement procedures using passive dosemeters: use of passive H*(10) dosimetry systems in Europe
SP  - 417
EP  - 421
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8713
ER  - 

@conference{
author = "Ciraj-Bjelac, Olivera and Živanović, Miloš Z. and Kržanović, Nikola and Pantelić, Gordana K. and Kaljević, Jelica and Stanković-Petrović, Jelena S. and Knežević-Medija, Željka and Majer, Marija",
year = "2019",
abstract = "Jedan od zadataka projekta 16ENV04 Preparedness jeispitivanje pasivnih dozimetrijskih sistema namenjenih za merenje operativne dozimetrijske veličine H*(10). Cilj ovog zadatka je evaluacija i harmonizacija procedura koji koriste laboratorije u Evropi a odnose se na merenje ambijentlnog ekvivalenta doze,a u vezi eventualne primene ovakvih doziemtrisjkih sistema u kontekstu dleovanja u vanrednom događaju., One of the outstanding tasks of the project 16ENV04 Preparedness, is to investigate the use of passive dosemeters aimed for measurement of operational quantityH*(10). The aim of this task is to develop a rationale to harmonize the procedures used by European measuring bodies and authorities, which provide services or fulfil tasks in radiation protection by using passive H*(10) area monitoring systems. Procedures used by European measuring bodies and services for environmental monitoring using passive area dosemeters are investigated, with a goal to investigate the applicability of passive dosimetry systems in the aftermath of a nuclear event.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "30. симпозијум ДЗЗСЦГ : зборник радова",
title = "Harmonizacija procedura za merenje ambijentalnog ekvivalta doze: primena pasivnih (10) dosimetrijskih sistema u Evropi, Harmonisation of dose measurement procedures using passive dosemeters: use of passive H*(10) dosimetry systems in Europe",
pages = "417-421",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8713"
}

Ciraj-Bjelac, O., Živanović, M. Z., Kržanović, N., Pantelić, G. K., Kaljević, J., Stanković-Petrović, J. S., Knežević-Medija, Ž.,& Majer, M.. (2019). Harmonizacija procedura za merenje ambijentalnog ekvivalta doze: primena pasivnih (10) dosimetrijskih sistema u Evropi. in 30. симпозијум ДЗЗСЦГ : зборник радова
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 417-421.
https://hdl.handle.net/21.15107/rcub_vinar_8713

Ciraj-Bjelac O, Živanović MZ, Kržanović N, Pantelić GK, Kaljević J, Stanković-Petrović JS, Knežević-Medija Ž, Majer M. Harmonizacija procedura za merenje ambijentalnog ekvivalta doze: primena pasivnih (10) dosimetrijskih sistema u Evropi. in 30. симпозијум ДЗЗСЦГ : зборник радова. 2019;:417-421.
https://hdl.handle.net/21.15107/rcub_vinar_8713 .

Ciraj-Bjelac, Olivera, Živanović, Miloš Z., Kržanović, Nikola, Pantelić, Gordana K., Kaljević, Jelica, Stanković-Petrović, Jelena S., Knežević-Medija, Željka, Majer, Marija, "Harmonizacija procedura za merenje ambijentalnog ekvivalta doze: primena pasivnih (10) dosimetrijskih sistema u Evropi" in 30. симпозијум ДЗЗСЦГ : зборник радова (2019):417-421,
https://hdl.handle.net/21.15107/rcub_vinar_8713 .

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

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

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

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

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