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  - Hadžijojić, Milivoje
AU  - Ćosić, Marko
AU  - Rymzhanov, Ruslan
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9968
AB  - We have investigated the transmission of the 5 keV proton beam through a graphene sheet containing monovacancy, adatom, and Stone–Wales defects. The proton–graphene interaction potential was constructed using the Doyle–Turner's proton–carbon interaction potential. The closed form of the scattering law was obtained using the momentum approximation. Angular distributions of the transmitted protons were analyzed using the morphological method based on the inspection of the rainbow patterns in the impact parameter and scattering angle planes generated by the rainbow scattering. We have demonstrated that rainbows in the impact parameter plane are attracted and repelled by the nearest saddles and maxima of the reduced proton–graphene interaction potential. This explains why the rainbow pattern is so sensitive to the redistribution of the potential extrema caused by defects. Each defect type produces its distinctive rainbow pattern that dominantly determines the shape of the angular distribution. The ridge maxima of the angular distributions were investigated and related to the spectrum of the Jacobian matrix of the map generated by the scattering law. In the end, it has been shown how observed rainbow patterns could be used to determine the unknown defect densities of the complicated sample containing a combination of the different defect types.
T2  - Journal of Physical Chemistry C
T1  - Morphological Analysis of the Rainbow Patterns Created by Point Defects of Graphene
VL  - 125
IS  - 38
SP  - 21030
EP  - 21043
DO  - 10.1021/acs.jpcc.1c05971
ER  - 

@article{
author = "Hadžijojić, Milivoje and Ćosić, Marko and Rymzhanov, Ruslan",
year = "2021",
abstract = "We have investigated the transmission of the 5 keV proton beam through a graphene sheet containing monovacancy, adatom, and Stone–Wales defects. The proton–graphene interaction potential was constructed using the Doyle–Turner's proton–carbon interaction potential. The closed form of the scattering law was obtained using the momentum approximation. Angular distributions of the transmitted protons were analyzed using the morphological method based on the inspection of the rainbow patterns in the impact parameter and scattering angle planes generated by the rainbow scattering. We have demonstrated that rainbows in the impact parameter plane are attracted and repelled by the nearest saddles and maxima of the reduced proton–graphene interaction potential. This explains why the rainbow pattern is so sensitive to the redistribution of the potential extrema caused by defects. Each defect type produces its distinctive rainbow pattern that dominantly determines the shape of the angular distribution. The ridge maxima of the angular distributions were investigated and related to the spectrum of the Jacobian matrix of the map generated by the scattering law. In the end, it has been shown how observed rainbow patterns could be used to determine the unknown defect densities of the complicated sample containing a combination of the different defect types.",
journal = "Journal of Physical Chemistry C",
title = "Morphological Analysis of the Rainbow Patterns Created by Point Defects of Graphene",
volume = "125",
number = "38",
pages = "21030-21043",
doi = "10.1021/acs.jpcc.1c05971"
}

Hadžijojić, M., Ćosić, M.,& Rymzhanov, R.. (2021). Morphological Analysis of the Rainbow Patterns Created by Point Defects of Graphene. in Journal of Physical Chemistry C, 125(38), 21030-21043.
https://doi.org/10.1021/acs.jpcc.1c05971

Hadžijojić M, Ćosić M, Rymzhanov R. Morphological Analysis of the Rainbow Patterns Created by Point Defects of Graphene. in Journal of Physical Chemistry C. 2021;125(38):21030-21043.
doi:10.1021/acs.jpcc.1c05971 .

Hadžijojić, Milivoje, Ćosić, Marko, Rymzhanov, Ruslan, "Morphological Analysis of the Rainbow Patterns Created by Point Defects of Graphene" in Journal of Physical Chemistry C, 125, no. 38 (2021):21030-21043,
https://doi.org/10.1021/acs.jpcc.1c05971 . .