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

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

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

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

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

TY  - CONF
AU  - Hadnađev Šimonji, Darka
AU  - Nikolić, Olivera
AU  - Basta Nikolić, Marijana
AU  - Ciraj-Bjelac, Olivera
AU  - Stojanović, Sanja
AU  - Juković, Mirela
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11153
PB  - RAD Centre, Niš, Serbia
C3  - RAD 2019 : 7th International Conference on Radiation in Various Fields of Research : book of abstracts; June 10-14, 2019; Herceg Novi, Montenegro
T1  - Evaluation of radiation dose at optimized protocols for some standard MDCT examinations in a large university hospital
SP  - 231
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11153
ER  - 

@conference{
author = "Hadnađev Šimonji, Darka and Nikolić, Olivera and Basta Nikolić, Marijana and Ciraj-Bjelac, Olivera and Stojanović, Sanja and Juković, Mirela",
year = "2019",
publisher = "RAD Centre, Niš, Serbia",
journal = "RAD 2019 : 7th International Conference on Radiation in Various Fields of Research : book of abstracts; June 10-14, 2019; Herceg Novi, Montenegro",
title = "Evaluation of radiation dose at optimized protocols for some standard MDCT examinations in a large university hospital",
pages = "231",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11153"
}

Hadnađev Šimonji, D., Nikolić, O., Basta Nikolić, M., Ciraj-Bjelac, O., Stojanović, S.,& Juković, M.. (2019). Evaluation of radiation dose at optimized protocols for some standard MDCT examinations in a large university hospital. in RAD 2019 : 7th International Conference on Radiation in Various Fields of Research : book of abstracts; June 10-14, 2019; Herceg Novi, Montenegro
RAD Centre, Niš, Serbia., 231.
https://hdl.handle.net/21.15107/rcub_vinar_11153

Hadnađev Šimonji D, Nikolić O, Basta Nikolić M, Ciraj-Bjelac O, Stojanović S, Juković M. Evaluation of radiation dose at optimized protocols for some standard MDCT examinations in a large university hospital. in RAD 2019 : 7th International Conference on Radiation in Various Fields of Research : book of abstracts; June 10-14, 2019; Herceg Novi, Montenegro. 2019;:231.
https://hdl.handle.net/21.15107/rcub_vinar_11153 .

Hadnađev Šimonji, Darka, Nikolić, Olivera, Basta Nikolić, Marijana, Ciraj-Bjelac, Olivera, Stojanović, Sanja, Juković, Mirela, "Evaluation of radiation dose at optimized protocols for some standard MDCT examinations in a large university hospital" in RAD 2019 : 7th International Conference on Radiation in Various Fields of Research : book of abstracts; June 10-14, 2019; Herceg Novi, Montenegro (2019):231,
https://hdl.handle.net/21.15107/rcub_vinar_11153 .

TY  - JOUR
AU  - Mitić, Žarko
AU  - Najman, Stevo
AU  - Cakić, Milorad
AU  - Ajduković, Zorica
AU  - Ignjatović, Nenad L.
AU  - Nikolić, Ružica
AU  - Nikolić, Goran
AU  - Stojanović, Sanja
AU  - Vukelić, Marija
AU  - Trajanović, Miroslav
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/554
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7476
AB  - The influence of glucocorticoids on the composition and mineral/organic content of the mandible in tested animals after recovery and healing phase was investigated in this work. The results of FTIR analysis demonstrated that bone tissue composition was changed after glucocorticoid treatment. The increase of calcium, magnesium, phosphorus content and mineral part of bones was statistically significant in recovery phase and in treatment phase that included calcitonin and thymus extract. Some changes also happened in the organic part of the matrix, as indicated by intensity changes for already present IR bands and the appearance of new IR bands in the region 3500–1300 cm−1.
PB  - Elsevier
T2  - Journal of Molecular Structure
T1  - Spectroscopic characterization of bone tissue of experimental animals after glucocorticoid treatment and recovery period
SP  - 315
EP  - 320
DO  - 10.1016/j.molstruc.2014.06.006
ER  - 

@article{
author = "Mitić, Žarko and Najman, Stevo and Cakić, Milorad and Ajduković, Zorica and Ignjatović, Nenad L. and Nikolić, Ružica and Nikolić, Goran and Stojanović, Sanja and Vukelić, Marija and Trajanović, Miroslav",
year = "2014",
abstract = "The influence of glucocorticoids on the composition and mineral/organic content of the mandible in tested animals after recovery and healing phase was investigated in this work. The results of FTIR analysis demonstrated that bone tissue composition was changed after glucocorticoid treatment. The increase of calcium, magnesium, phosphorus content and mineral part of bones was statistically significant in recovery phase and in treatment phase that included calcitonin and thymus extract. Some changes also happened in the organic part of the matrix, as indicated by intensity changes for already present IR bands and the appearance of new IR bands in the region 3500–1300 cm−1.",
publisher = "Elsevier",
journal = "Journal of Molecular Structure",
title = "Spectroscopic characterization of bone tissue of experimental animals after glucocorticoid treatment and recovery period",
pages = "315-320",
doi = "10.1016/j.molstruc.2014.06.006"
}

Mitić, Ž., Najman, S., Cakić, M., Ajduković, Z., Ignjatović, N. L., Nikolić, R., Nikolić, G., Stojanović, S., Vukelić, M.,& Trajanović, M.. (2014). Spectroscopic characterization of bone tissue of experimental animals after glucocorticoid treatment and recovery period. in Journal of Molecular Structure
Elsevier., 315-320.
https://doi.org/10.1016/j.molstruc.2014.06.006

Mitić Ž, Najman S, Cakić M, Ajduković Z, Ignjatović NL, Nikolić R, Nikolić G, Stojanović S, Vukelić M, Trajanović M. Spectroscopic characterization of bone tissue of experimental animals after glucocorticoid treatment and recovery period. in Journal of Molecular Structure. 2014;:315-320.
doi:10.1016/j.molstruc.2014.06.006 .

Mitić, Žarko, Najman, Stevo, Cakić, Milorad, Ajduković, Zorica, Ignjatović, Nenad L., Nikolić, Ružica, Nikolić, Goran, Stojanović, Sanja, Vukelić, Marija, Trajanović, Miroslav, "Spectroscopic characterization of bone tissue of experimental animals after glucocorticoid treatment and recovery period" in Journal of Molecular Structure (2014):315-320,
https://doi.org/10.1016/j.molstruc.2014.06.006 . .

TY  - CONF
AU  - Najman, Stevo
AU  - Stojanović, Sanja
AU  - Mitrić, Žarko
AU  - Ajduković, Zorica
AU  - Ignjatović, Nenad L.
AU  - Uskoković, Dragan
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/519
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7466
AB  - We have examined the effect of extracts of the calcium phosphate/poly(DL-lactide-co-glycolide) (CP/PLGA) and cobalt-exchanged hydroxyapatite (CoHAp), on the viability of Saos2 osteoblastlike cells. Extracts were prepared by incubation for 3 days at 37°C in the cultivation medium. Conductivity and pH value of extracts were measured before viability assay. Cell viability was estimated by MTT test performed after 24 h incubation of cells with various concentrations of extracts. Extract of CP/PLGA acted more cytotoxic on osteoblasts than the extract of CoHAp. This difference in the effect of examined extracts can be explained by their different pH value and conductivity.
PB  - Belgrade : Materials Research Society of Serbia; Institute of Technical Sciences of SASA; Vinča Institute of Nuclear Sciences, University of Belgrade
C3  - Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts
T1  - Examination of the influence of nanomaterials calcium phosphate/poly(DL-lactide-co-glycolide) and cobalt-exchanged hydroxyapatite on the viability of Saos-2 cells
SP  - 110
EP  - 110
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7466
ER  - 

@conference{
author = "Najman, Stevo and Stojanović, Sanja and Mitrić, Žarko and Ajduković, Zorica and Ignjatović, Nenad L. and Uskoković, Dragan",
year = "2012",
abstract = "We have examined the effect of extracts of the calcium phosphate/poly(DL-lactide-co-glycolide) (CP/PLGA) and cobalt-exchanged hydroxyapatite (CoHAp), on the viability of Saos2 osteoblastlike cells. Extracts were prepared by incubation for 3 days at 37°C in the cultivation medium. Conductivity and pH value of extracts were measured before viability assay. Cell viability was estimated by MTT test performed after 24 h incubation of cells with various concentrations of extracts. Extract of CP/PLGA acted more cytotoxic on osteoblasts than the extract of CoHAp. This difference in the effect of examined extracts can be explained by their different pH value and conductivity.",
publisher = "Belgrade : Materials Research Society of Serbia; Institute of Technical Sciences of SASA; Vinča Institute of Nuclear Sciences, University of Belgrade",
journal = "Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts",
title = "Examination of the influence of nanomaterials calcium phosphate/poly(DL-lactide-co-glycolide) and cobalt-exchanged hydroxyapatite on the viability of Saos-2 cells",
pages = "110-110",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7466"
}

Najman, S., Stojanović, S., Mitrić, Ž., Ajduković, Z., Ignjatović, N. L.,& Uskoković, D.. (2012). Examination of the influence of nanomaterials calcium phosphate/poly(DL-lactide-co-glycolide) and cobalt-exchanged hydroxyapatite on the viability of Saos-2 cells. in Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts
Belgrade : Materials Research Society of Serbia; Institute of Technical Sciences of SASA; Vinča Institute of Nuclear Sciences, University of Belgrade., 110-110.
https://hdl.handle.net/21.15107/rcub_vinar_7466

Najman S, Stojanović S, Mitrić Ž, Ajduković Z, Ignjatović NL, Uskoković D. Examination of the influence of nanomaterials calcium phosphate/poly(DL-lactide-co-glycolide) and cobalt-exchanged hydroxyapatite on the viability of Saos-2 cells. in Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts. 2012;:110-110.
https://hdl.handle.net/21.15107/rcub_vinar_7466 .

Najman, Stevo, Stojanović, Sanja, Mitrić, Žarko, Ajduković, Zorica, Ignjatović, Nenad L., Uskoković, Dragan, "Examination of the influence of nanomaterials calcium phosphate/poly(DL-lactide-co-glycolide) and cobalt-exchanged hydroxyapatite on the viability of Saos-2 cells" in Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts (2012):110-110,
https://hdl.handle.net/21.15107/rcub_vinar_7466 .

TY  - CONF
AU  - Najman, Stevo
AU  - Stojanović, Sanja
AU  - Najdanović, Jelena
AU  - Ignjatović, Nenad L.
AU  - Uskoković, Dragan
PY  - 2011
UR  - http://dais.sanu.ac.rs/123456789/698
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7519
AB  - The aim of this study was to examine the effects of nanoparticles of calcium phosphate/poly-(DL-lactide-co-glycolide) (NPs-CP/PLGA) on viability and growth of different cell lines in vitro. HeLa and MDCK cells were incubated with different concentrations of suspension and extract of NPs-CP/PLGA. Concentrations of suspension were in the range from 1.6 μg/ml to 5000 μg/ml and extract in the range from 2.5% to 50%. After incubation, MTT test was performed. Our results indicate that examined nanomaterial shows different effects depending on type of the cells, applied concentration of nanomaterial as well as whether it is examined suspension or extract.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts / Tenth Young Researchers' Conference Materials Science and Engineering, December 21-23, 2011, Belgrade, Serbia
T1  - Assessment of the effects of nanoparticles of CP/PLGA on cultures of different cell lines
SP  - 6
EP  - 6
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7519
ER  - 

@conference{
author = "Najman, Stevo and Stojanović, Sanja and Najdanović, Jelena and Ignjatović, Nenad L. and Uskoković, Dragan",
year = "2011",
abstract = "The aim of this study was to examine the effects of nanoparticles of calcium phosphate/poly-(DL-lactide-co-glycolide) (NPs-CP/PLGA) on viability and growth of different cell lines in vitro. HeLa and MDCK cells were incubated with different concentrations of suspension and extract of NPs-CP/PLGA. Concentrations of suspension were in the range from 1.6 μg/ml to 5000 μg/ml and extract in the range from 2.5% to 50%. After incubation, MTT test was performed. Our results indicate that examined nanomaterial shows different effects depending on type of the cells, applied concentration of nanomaterial as well as whether it is examined suspension or extract.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Tenth Young Researchers' Conference Materials Science and Engineering, December 21-23, 2011, Belgrade, Serbia",
title = "Assessment of the effects of nanoparticles of CP/PLGA on cultures of different cell lines",
pages = "6-6",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7519"
}

Najman, S., Stojanović, S., Najdanović, J., Ignjatović, N. L.,& Uskoković, D.. (2011). Assessment of the effects of nanoparticles of CP/PLGA on cultures of different cell lines. in Program and the Book of Abstracts / Tenth Young Researchers' Conference Materials Science and Engineering, December 21-23, 2011, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 6-6.
https://hdl.handle.net/21.15107/rcub_vinar_7519

Najman S, Stojanović S, Najdanović J, Ignjatović NL, Uskoković D. Assessment of the effects of nanoparticles of CP/PLGA on cultures of different cell lines. in Program and the Book of Abstracts / Tenth Young Researchers' Conference Materials Science and Engineering, December 21-23, 2011, Belgrade, Serbia. 2011;:6-6.
https://hdl.handle.net/21.15107/rcub_vinar_7519 .

Najman, Stevo, Stojanović, Sanja, Najdanović, Jelena, Ignjatović, Nenad L., Uskoković, Dragan, "Assessment of the effects of nanoparticles of CP/PLGA on cultures of different cell lines" in Program and the Book of Abstracts / Tenth Young Researchers' Conference Materials Science and Engineering, December 21-23, 2011, Belgrade, Serbia (2011):6-6,
https://hdl.handle.net/21.15107/rcub_vinar_7519 .