TY  - JOUR
AU  - Božović, Predrag
AU  - Ciraj-Bjelac, Olivera
AU  - Stanković-Petrović, Jelena S.
AU  - Aranđić, Danijela
AU  - Čeklić, Sandra
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8120
AB  - Medical staff performing interventional procedures in cardiology and radiology is considered to be a professional group exposed to high doses of ionizing radiation. With new epidemiological evidences and recently reduced eye lens dose limit, dose assessment to the lens of the eye, in the interventional cardiology, has become one of the most challenging research topics. This paper presents results of the eye lens dose assessment in interventional cardiology obtained by means of the computational dosimetry. Since placing and wearing the dedicated eye lens dosimeter is encumbering for the staff, Monte Carlo simulation provides an accurate and efficient method for obtaining an indication of doses to the eye lenses. Eye lens doses were estimated for three typical beam projections (PA, LAO, and RAO) and tube voltages ranging from 80 kV to 110 kV, with different protective equipment setups, for the first operator position. Simulations were carried out using MCNPX code. Results revealed that a whole body dosimeter worn at the thyroid center position gives the best estimate of the eye lens dose with a spread from 11 % to 18 % for the left eye. Corresponding average conversion coefficient from whole body lo the eye lens dose is estimated to be 0.18. © 2018; Vinca Inst Nuclear Sci. All rights reserved.
T2  - Nuclear Technology and Radiation Protection
T1  - Utilizing Monte Carlo simulations in estimation of occupational eye lens dose based on whole body dosemeter in interventional cardiology and radiology
VL  - 33
IS  - 4
SP  - 375
EP  - 379
DO  - 10.2298/NTRP180730005B
ER  - 

@article{
author = "Božović, Predrag and Ciraj-Bjelac, Olivera and Stanković-Petrović, Jelena S. and Aranđić, Danijela and Čeklić, Sandra",
year = "2018",
abstract = "Medical staff performing interventional procedures in cardiology and radiology is considered to be a professional group exposed to high doses of ionizing radiation. With new epidemiological evidences and recently reduced eye lens dose limit, dose assessment to the lens of the eye, in the interventional cardiology, has become one of the most challenging research topics. This paper presents results of the eye lens dose assessment in interventional cardiology obtained by means of the computational dosimetry. Since placing and wearing the dedicated eye lens dosimeter is encumbering for the staff, Monte Carlo simulation provides an accurate and efficient method for obtaining an indication of doses to the eye lenses. Eye lens doses were estimated for three typical beam projections (PA, LAO, and RAO) and tube voltages ranging from 80 kV to 110 kV, with different protective equipment setups, for the first operator position. Simulations were carried out using MCNPX code. Results revealed that a whole body dosimeter worn at the thyroid center position gives the best estimate of the eye lens dose with a spread from 11 % to 18 % for the left eye. Corresponding average conversion coefficient from whole body lo the eye lens dose is estimated to be 0.18. © 2018; Vinca Inst Nuclear Sci. All rights reserved.",
journal = "Nuclear Technology and Radiation Protection",
title = "Utilizing Monte Carlo simulations in estimation of occupational eye lens dose based on whole body dosemeter in interventional cardiology and radiology",
volume = "33",
number = "4",
pages = "375-379",
doi = "10.2298/NTRP180730005B"
}

Božović, P., Ciraj-Bjelac, O., Stanković-Petrović, J. S., Aranđić, D.,& Čeklić, S.. (2018). Utilizing Monte Carlo simulations in estimation of occupational eye lens dose based on whole body dosemeter in interventional cardiology and radiology. in Nuclear Technology and Radiation Protection, 33(4), 375-379.
https://doi.org/10.2298/NTRP180730005B

Božović P, Ciraj-Bjelac O, Stanković-Petrović JS, Aranđić D, Čeklić S. Utilizing Monte Carlo simulations in estimation of occupational eye lens dose based on whole body dosemeter in interventional cardiology and radiology. in Nuclear Technology and Radiation Protection. 2018;33(4):375-379.
doi:10.2298/NTRP180730005B .

Božović, Predrag, Ciraj-Bjelac, Olivera, Stanković-Petrović, Jelena S., Aranđić, Danijela, Čeklić, Sandra, "Utilizing Monte Carlo simulations in estimation of occupational eye lens dose based on whole body dosemeter in interventional cardiology and radiology" in Nuclear Technology and Radiation Protection, 33, no. 4 (2018):375-379,
https://doi.org/10.2298/NTRP180730005B . .

TY  - CONF
AU  - Ciraj-Bjelac, Olivera
AU  - Aranđić, Danijela
AU  - Božović, Predrag
AU  - Ćeklić, Sandra
AU  - Stanković-Petrović, Jelena S.
AU  - Kaljević, Jelica
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8280
UR  - https://plus.sr.cobiss.net/opac7/bib/245691404
UR  - http://dzz.org.rs/wp-content/uploads/2013/06/Zbornik_XXIX_Simpozijum_DZZ_SCG_Srebrno_jezero_2.pdf
AB  - Sledeći rezultate epidemioloških studija o efektu jonizujućih zračenja na očno stočivo,
Međunarodna komisija za zaštitu od zračenja revidirala je granicu izlaganja za očno
sočivo, imajući u vidu da u slučaju dugotrajnog izlaganja malim dozama i malim
jačinama doza na radnom mestu, katarakta može nastati na nivou doze daleko manjim
od ranije utvrđenog praga. Ovakve situacije su tipične za profesionalna izlaganja u
interventnoj kardiologiji i radiologiji. Cilj ovog rada je prikaz metodologije za
donošenje odluke o potrebi za individualnim monitringom za očno sočivo i prikaz
rezultata pilot monitoringa u interventnoj kardiologiji pomoću namenskih dozimetara
za očno sočivo kalibrisanim u dozimetrijskoj veličini lični dozni ekvivalent Hp(3).
AB  - Following recent epidemiological evidences on effects of ionizing radiation to the eye
lens, International Commission on Radiological Protection has re-evaluated dose limit
to the lens of the eye, owing that protracted exposure to the relatively small doses and
dose rates may lead to the cataract at dose levels much lower than previously set dose
thresholds. Such satiations are typical for occupational exposure in interventional
cardiology and radiology. Occupational exposure from interventional x-ray procedures
is an area in which increased eye lens exposure may occur. Accurate dosimetry is an
important element to investigate the correlation of observed radiation effects with
radiation dose, to verify the compliance with regulatory dose limits, and to optimize
radiation protection practice. The papers presents the overview of practical methods for
eye lens doses assessment as well as typical occupational eye lens dose levels in
interventional procedures in cardiology and radiology. In addition, a methodology to
assist decision making about need for specific eye lens individual monitoring using a
dedicated passive dosimeters calibrated in terms of Hp(3) is presented in this paper.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 29. симпозијум ДЗЗСЦГ : зборник радова
T1  - Monitoring doze za očno sočivo u interventnoj radiologiji i kardiologiji
T1  - Eye lens monitoring in interventional cardiology and radiology
SP  - 241
EP  - 248
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8280
ER  - 

@conference{
author = "Ciraj-Bjelac, Olivera and Aranđić, Danijela and Božović, Predrag and Ćeklić, Sandra and Stanković-Petrović, Jelena S. and Kaljević, Jelica",
year = "2017",
abstract = "Sledeći rezultate epidemioloških studija o efektu jonizujućih zračenja na očno stočivo,
Međunarodna komisija za zaštitu od zračenja revidirala je granicu izlaganja za očno
sočivo, imajući u vidu da u slučaju dugotrajnog izlaganja malim dozama i malim
jačinama doza na radnom mestu, katarakta može nastati na nivou doze daleko manjim
od ranije utvrđenog praga. Ovakve situacije su tipične za profesionalna izlaganja u
interventnoj kardiologiji i radiologiji. Cilj ovog rada je prikaz metodologije za
donošenje odluke o potrebi za individualnim monitringom za očno sočivo i prikaz
rezultata pilot monitoringa u interventnoj kardiologiji pomoću namenskih dozimetara
za očno sočivo kalibrisanim u dozimetrijskoj veličini lični dozni ekvivalent Hp(3)., Following recent epidemiological evidences on effects of ionizing radiation to the eye
lens, International Commission on Radiological Protection has re-evaluated dose limit
to the lens of the eye, owing that protracted exposure to the relatively small doses and
dose rates may lead to the cataract at dose levels much lower than previously set dose
thresholds. Such satiations are typical for occupational exposure in interventional
cardiology and radiology. Occupational exposure from interventional x-ray procedures
is an area in which increased eye lens exposure may occur. Accurate dosimetry is an
important element to investigate the correlation of observed radiation effects with
radiation dose, to verify the compliance with regulatory dose limits, and to optimize
radiation protection practice. The papers presents the overview of practical methods for
eye lens doses assessment as well as typical occupational eye lens dose levels in
interventional procedures in cardiology and radiology. In addition, a methodology to
assist decision making about need for specific eye lens individual monitoring using a
dedicated passive dosimeters calibrated in terms of Hp(3) is presented in this paper.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "29. симпозијум ДЗЗСЦГ : зборник радова",
title = "Monitoring doze za očno sočivo u interventnoj radiologiji i kardiologiji, Eye lens monitoring in interventional cardiology and radiology",
pages = "241-248",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8280"
}

Ciraj-Bjelac, O., Aranđić, D., Božović, P., Ćeklić, S., Stanković-Petrović, J. S.,& Kaljević, J.. (2017). Monitoring doze za očno sočivo u interventnoj radiologiji i kardiologiji. in 29. симпозијум ДЗЗСЦГ : зборник радова
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 241-248.
https://hdl.handle.net/21.15107/rcub_vinar_8280

Ciraj-Bjelac O, Aranđić D, Božović P, Ćeklić S, Stanković-Petrović JS, Kaljević J. Monitoring doze za očno sočivo u interventnoj radiologiji i kardiologiji. in 29. симпозијум ДЗЗСЦГ : зборник радова. 2017;:241-248.
https://hdl.handle.net/21.15107/rcub_vinar_8280 .

Ciraj-Bjelac, Olivera, Aranđić, Danijela, Božović, Predrag, Ćeklić, Sandra, Stanković-Petrović, Jelena S., Kaljević, Jelica, "Monitoring doze za očno sočivo u interventnoj radiologiji i kardiologiji" in 29. симпозијум ДЗЗСЦГ : зборник радова (2017):241-248,
https://hdl.handle.net/21.15107/rcub_vinar_8280 .

TY  - CONF
AU  - Ćeklić, Sandra
AU  - Ciraj-Bjelac, Olivera
AU  - Aranđić, Danijela
AU  - Stanković-Petrović, Jelena S.
AU  - Božović, Predrag
AU  - Mihailescu Liviu, Cristian
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8288
UR  - https://plus.sr.cobiss.net/opac7/bib/245691404
UR  - http://dzz.org.rs/wp-content/uploads/2013/06/Zbornik_XXIX_Simpozijum_DZZ_SCG_Srebrno_jezero_2.pdf
AB  - U ovom radu prikazani su rezultati ispitivanja mogućeg dizajna sekundarnog etalona za
lični dozni ekvivalent Hp(3) pomoću Monte Karlo simulacija. Simulirana je sferna
jonizaciona komora ugrađena u sferni fantom. Ispitivana je energetska i ugaona
zavisnost i cilj je bio da se postigne što konstantniji odgovor u širokom opsegu energija.
Rezultati pokazuju da se najadekvatniji dizajn postize jonizacionom komorom TK-30
ugrađenom u sferni fantom od polimetil-metakrilata (PMMA) prečnika 15 cm.
Energetski odgovor je u ±10% za opseg energija od (18 do 1250) keV, dok je ugaoni
odgovor u ±20% za upadni ugao u opsegu od 0 do 90º za energetski opseg od (48 do
1250) keV.
AB  - In this paper possible design for secondary standard Hp(3) ionisation chamber was
investigated using Monte Carlo simulations. The simulations were performed for
spherical ionization chamber surrounded by spherical phantom. The goal was to obtain
the more constant energy and angular response in wide energy range in order to get
optimal geometry. The results shown that the most adequate design for secondary
standard Hp(3) was achieved using commercially available TK-30 ionization chamber
manufactured by PTW embedded in spherical polymethyl methacrylate (PMMA)
phantom with diameter 15 cm. The energy response was within ±10% in range of
photon energies from (18 to 1250) keV, while angular response was within ±20% for
angle of incidence α from 0º to 90º for energy range (48 to 1250) keV.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 29. симпозијум ДЗЗСЦГ : зборник радова
T1  - Konstrukcija sekundarnog etalona za veličinu lični dozni ekvivalent Hp(3) pomoću Monte Karlo simulacija
T1  - Design of secondary standard Hp(3) ionisation chamber using Monte Carlo simulations
SP  - 287
EP  - 290
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8288
ER  - 

@conference{
author = "Ćeklić, Sandra and Ciraj-Bjelac, Olivera and Aranđić, Danijela and Stanković-Petrović, Jelena S. and Božović, Predrag and Mihailescu Liviu, Cristian",
year = "2017",
abstract = "U ovom radu prikazani su rezultati ispitivanja mogućeg dizajna sekundarnog etalona za
lični dozni ekvivalent Hp(3) pomoću Monte Karlo simulacija. Simulirana je sferna
jonizaciona komora ugrađena u sferni fantom. Ispitivana je energetska i ugaona
zavisnost i cilj je bio da se postigne što konstantniji odgovor u širokom opsegu energija.
Rezultati pokazuju da se najadekvatniji dizajn postize jonizacionom komorom TK-30
ugrađenom u sferni fantom od polimetil-metakrilata (PMMA) prečnika 15 cm.
Energetski odgovor je u ±10% za opseg energija od (18 do 1250) keV, dok je ugaoni
odgovor u ±20% za upadni ugao u opsegu od 0 do 90º za energetski opseg od (48 do
1250) keV., In this paper possible design for secondary standard Hp(3) ionisation chamber was
investigated using Monte Carlo simulations. The simulations were performed for
spherical ionization chamber surrounded by spherical phantom. The goal was to obtain
the more constant energy and angular response in wide energy range in order to get
optimal geometry. The results shown that the most adequate design for secondary
standard Hp(3) was achieved using commercially available TK-30 ionization chamber
manufactured by PTW embedded in spherical polymethyl methacrylate (PMMA)
phantom with diameter 15 cm. The energy response was within ±10% in range of
photon energies from (18 to 1250) keV, while angular response was within ±20% for
angle of incidence α from 0º to 90º for energy range (48 to 1250) keV.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "29. симпозијум ДЗЗСЦГ : зборник радова",
title = "Konstrukcija sekundarnog etalona za veličinu lični dozni ekvivalent Hp(3) pomoću Monte Karlo simulacija, Design of secondary standard Hp(3) ionisation chamber using Monte Carlo simulations",
pages = "287-290",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8288"
}

Ćeklić, S., Ciraj-Bjelac, O., Aranđić, D., Stanković-Petrović, J. S., Božović, P.,& Mihailescu Liviu, C.. (2017). Konstrukcija sekundarnog etalona za veličinu lični dozni ekvivalent Hp(3) pomoću Monte Karlo simulacija. in 29. симпозијум ДЗЗСЦГ : зборник радова
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 287-290.
https://hdl.handle.net/21.15107/rcub_vinar_8288

Ćeklić S, Ciraj-Bjelac O, Aranđić D, Stanković-Petrović JS, Božović P, Mihailescu Liviu C. Konstrukcija sekundarnog etalona za veličinu lični dozni ekvivalent Hp(3) pomoću Monte Karlo simulacija. in 29. симпозијум ДЗЗСЦГ : зборник радова. 2017;:287-290.
https://hdl.handle.net/21.15107/rcub_vinar_8288 .

Ćeklić, Sandra, Ciraj-Bjelac, Olivera, Aranđić, Danijela, Stanković-Petrović, Jelena S., Božović, Predrag, Mihailescu Liviu, Cristian, "Konstrukcija sekundarnog etalona za veličinu lični dozni ekvivalent Hp(3) pomoću Monte Karlo simulacija" in 29. симпозијум ДЗЗСЦГ : зборник радова (2017):287-290,
https://hdl.handle.net/21.15107/rcub_vinar_8288 .

TY  - CONF
AU  - Božović, Predrag
AU  - Ciraj-Bjelac, Olivera
AU  - Aranđić, Danijela
AU  - Ćeklić, Sandra
AU  - Lazarević, Đorđe R.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8287
UR  - https://plus.sr.cobiss.net/opac7/bib/245691404
UR  - http://dzz.org.rs/wp-content/uploads/2013/06/Zbornik_XXIX_Simpozijum_DZZ_SCG_Srebrno_jezero_2.pdf
AB  - Radijaciona oštećenja nastaju usled izmeštanja atoma materijala pri elastičnom
rasejavanju čestica upadnog zračenja na jezgrima ili zbog nuklearnih reakcija
izazvanih upadnim zračenjem. Broj izmeštanja po atomu (DPA) je veličina kojom se
opisuje radijaciono oštećenje. S obzirom da je neutronsko zračenje naročito efikasno u
izmeštanju atoma, ispitan je uticaj neutrona na sastavne elemente strukturalne zaštite
241Am-Be neutronskog izvora sastavljene od parafina, betona i olova. Proračun DPA je
obavljen na osnovu rezultata simulacija primenom MCNPX prorgamskog paketa.
AB  - Radiation damage in materials results from nuclear collisions and reactions which
produce energetic recoil atoms of the host materials or reaction products. Displacement
per atom (DPA) is used to quantify radiation damage. Since neutrons are particularly
efficient in displacing atoms, their influence on constituent elements of 241Am-Be
neutron source shielding made of paraffin, concrete and lead. DPA was calculated
based on simulations using MCNPX.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 29. симпозијум ДЗЗСЦГ : зборник радова
T1  - Monte Karlo simulacija radijacionih oštećenja u zaštitnim materijalima Am-Be-241 neutronskog izvora
T1  - Monte Carlo simulation of radiation damage in shielding materials of Am-Be-241 neutron source
SP  - 283
EP  - 286
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8287
ER  - 

@conference{
author = "Božović, Predrag and Ciraj-Bjelac, Olivera and Aranđić, Danijela and Ćeklić, Sandra and Lazarević, Đorđe R.",
year = "2017",
abstract = "Radijaciona oštećenja nastaju usled izmeštanja atoma materijala pri elastičnom
rasejavanju čestica upadnog zračenja na jezgrima ili zbog nuklearnih reakcija
izazvanih upadnim zračenjem. Broj izmeštanja po atomu (DPA) je veličina kojom se
opisuje radijaciono oštećenje. S obzirom da je neutronsko zračenje naročito efikasno u
izmeštanju atoma, ispitan je uticaj neutrona na sastavne elemente strukturalne zaštite
241Am-Be neutronskog izvora sastavljene od parafina, betona i olova. Proračun DPA je
obavljen na osnovu rezultata simulacija primenom MCNPX prorgamskog paketa., Radiation damage in materials results from nuclear collisions and reactions which
produce energetic recoil atoms of the host materials or reaction products. Displacement
per atom (DPA) is used to quantify radiation damage. Since neutrons are particularly
efficient in displacing atoms, their influence on constituent elements of 241Am-Be
neutron source shielding made of paraffin, concrete and lead. DPA was calculated
based on simulations using MCNPX.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "29. симпозијум ДЗЗСЦГ : зборник радова",
title = "Monte Karlo simulacija radijacionih oštećenja u zaštitnim materijalima Am-Be-241 neutronskog izvora, Monte Carlo simulation of radiation damage in shielding materials of Am-Be-241 neutron source",
pages = "283-286",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8287"
}

Božović, P., Ciraj-Bjelac, O., Aranđić, D., Ćeklić, S.,& Lazarević, Đ. R.. (2017). Monte Karlo simulacija radijacionih oštećenja u zaštitnim materijalima Am-Be-241 neutronskog izvora. in 29. симпозијум ДЗЗСЦГ : зборник радова
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 283-286.
https://hdl.handle.net/21.15107/rcub_vinar_8287

Božović P, Ciraj-Bjelac O, Aranđić D, Ćeklić S, Lazarević ĐR. Monte Karlo simulacija radijacionih oštećenja u zaštitnim materijalima Am-Be-241 neutronskog izvora. in 29. симпозијум ДЗЗСЦГ : зборник радова. 2017;:283-286.
https://hdl.handle.net/21.15107/rcub_vinar_8287 .

Božović, Predrag, Ciraj-Bjelac, Olivera, Aranđić, Danijela, Ćeklić, Sandra, Lazarević, Đorđe R., "Monte Karlo simulacija radijacionih oštećenja u zaštitnim materijalima Am-Be-241 neutronskog izvora" in 29. симпозијум ДЗЗСЦГ : зборник радова (2017):283-286,
https://hdl.handle.net/21.15107/rcub_vinar_8287 .

TY  - CONF
AU  - Antić, Vojislav
AU  - Ciraj-Bjelac, Olivera
AU  - Selaković, Jovana
AU  - Božović, Predrag
AU  - Aranđić, Danijela
AU  - Pavlović, Siniša
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8281
UR  - https://plus.sr.cobiss.net/opac7/bib/245691404
UR  - http://dzz.org.rs/wp-content/uploads/2013/06/Zbornik_XXIX_Simpozijum_DZZ_SCG_Srebrno_jezero_2.pdf
AB  - Ovaj rad ima za cilj procenu izloženosti očnog sočiva profesionalno izloženih lica
tokom CRT procedura na bazi direktnih merenja aktivnim dozimetrom u Hp(3) doznom
ekvivalentu. Ustanovljena je srednja vrednost doze po intervenciji od 30µSv za
kardiologe, 26 µSv za medicinske tehničare, odnosno 2µSv za radiološke tehničare.
Normalizovane vrednosti Hp(3)/PKA su iznosile 1,2 ± 0,34µSv, 0,98 ± 0,57µSv, odnosno
0,10 ± 0,08, respektivno. Položaj kardiologa, od centralne linije primarnog snopa, je
bio 45-55cm a medicinskog tehničara 80-200cm. Osim pri standardnom AP položaju,
fluoroskopsko praćenje je bilo i u kosoj projekciji, ali u relativno zanemarljivom
vremenu. Osoblje je zaštitne naočare nosilo samo u 15,8% analiziranih procedura (u 6
od ukupno 38). Razmatran je uticaj FT-a, PKA-a, strukturalne zaštite i ličnih zaštitnih
sredstava pri CRT interventnim procedurama, u cilju optimizacije zaštite očnog sočiva
od uticaja jonizujućeg zračenja.
AB  - This study aims to assess the exposure of the staff eye lens during CRT procedures,
based on direct measurements with an active dosimeter in Hp(3) operational quantity.
The mean doses per intervention of 30µSv, 26µSv and 2µSv was established for
cardiologists, medical technicians and radiological technicians, respectively.
Corresponding normalized values of Hp(3)/PKA were 1.2 ± 0.34 µSv, 0.98 ± 0.57 µSv,
and 0.10 ± 0.08. Cardiologists position relative to the center line of the primary beam
was in the range from 45 to 55cm. For medical technician, this distance was 80-200cm.
In addition to the standard AP position, fluoroscopic monitoring was also in oblique
projection, but in a relatively negligible time. Staff wore goggles only in 15.8% of the
analyzed procedures (6 of 38). In order to protect the eye lens from the influence of
ionizing radiation during CRT interventional procedures, the overall impact of the FT,
PKA, structural protection and personal protective equipment were carefully
considered.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 29. симпозијум ДЗЗСЦГ : зборник радова
T1  - Procena doze za očno sočivo za profesionalno izložena lica tokom CRT procedura
T1  - Eye lens dose assessment for occupationally exposed persons during CRT procedures
SP  - 249
EP  - 253
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8281
ER  - 

@conference{
author = "Antić, Vojislav and Ciraj-Bjelac, Olivera and Selaković, Jovana and Božović, Predrag and Aranđić, Danijela and Pavlović, Siniša",
year = "2017",
abstract = "Ovaj rad ima za cilj procenu izloženosti očnog sočiva profesionalno izloženih lica
tokom CRT procedura na bazi direktnih merenja aktivnim dozimetrom u Hp(3) doznom
ekvivalentu. Ustanovljena je srednja vrednost doze po intervenciji od 30µSv za
kardiologe, 26 µSv za medicinske tehničare, odnosno 2µSv za radiološke tehničare.
Normalizovane vrednosti Hp(3)/PKA su iznosile 1,2 ± 0,34µSv, 0,98 ± 0,57µSv, odnosno
0,10 ± 0,08, respektivno. Položaj kardiologa, od centralne linije primarnog snopa, je
bio 45-55cm a medicinskog tehničara 80-200cm. Osim pri standardnom AP položaju,
fluoroskopsko praćenje je bilo i u kosoj projekciji, ali u relativno zanemarljivom
vremenu. Osoblje je zaštitne naočare nosilo samo u 15,8% analiziranih procedura (u 6
od ukupno 38). Razmatran je uticaj FT-a, PKA-a, strukturalne zaštite i ličnih zaštitnih
sredstava pri CRT interventnim procedurama, u cilju optimizacije zaštite očnog sočiva
od uticaja jonizujućeg zračenja., This study aims to assess the exposure of the staff eye lens during CRT procedures,
based on direct measurements with an active dosimeter in Hp(3) operational quantity.
The mean doses per intervention of 30µSv, 26µSv and 2µSv was established for
cardiologists, medical technicians and radiological technicians, respectively.
Corresponding normalized values of Hp(3)/PKA were 1.2 ± 0.34 µSv, 0.98 ± 0.57 µSv,
and 0.10 ± 0.08. Cardiologists position relative to the center line of the primary beam
was in the range from 45 to 55cm. For medical technician, this distance was 80-200cm.
In addition to the standard AP position, fluoroscopic monitoring was also in oblique
projection, but in a relatively negligible time. Staff wore goggles only in 15.8% of the
analyzed procedures (6 of 38). In order to protect the eye lens from the influence of
ionizing radiation during CRT interventional procedures, the overall impact of the FT,
PKA, structural protection and personal protective equipment were carefully
considered.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "29. симпозијум ДЗЗСЦГ : зборник радова",
title = "Procena doze za očno sočivo za profesionalno izložena lica tokom CRT procedura, Eye lens dose assessment for occupationally exposed persons during CRT procedures",
pages = "249-253",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8281"
}

Antić, V., Ciraj-Bjelac, O., Selaković, J., Božović, P., Aranđić, D.,& Pavlović, S.. (2017). Procena doze za očno sočivo za profesionalno izložena lica tokom CRT procedura. in 29. симпозијум ДЗЗСЦГ : зборник радова
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 249-253.
https://hdl.handle.net/21.15107/rcub_vinar_8281

Antić V, Ciraj-Bjelac O, Selaković J, Božović P, Aranđić D, Pavlović S. Procena doze za očno sočivo za profesionalno izložena lica tokom CRT procedura. in 29. симпозијум ДЗЗСЦГ : зборник радова. 2017;:249-253.
https://hdl.handle.net/21.15107/rcub_vinar_8281 .

Antić, Vojislav, Ciraj-Bjelac, Olivera, Selaković, Jovana, Božović, Predrag, Aranđić, Danijela, Pavlović, Siniša, "Procena doze za očno sočivo za profesionalno izložena lica tokom CRT procedura" in 29. симпозијум ДЗЗСЦГ : зборник радова (2017):249-253,
https://hdl.handle.net/21.15107/rcub_vinar_8281 .

TY  - CONF
AU  - Ciraj-Bjelac, Olivera
AU  - Saldarriaga Vargas
AU  - Janković, Drina
AU  - Vukanac, Ivana
AU  - Kandić, Aleksandar
AU  - Đurašević, Mirjana
AU  - Živanović, Miloš
AU  - Ćeklić, Sandra
AU  - Aranđić, Danijela
AU  - Struelens, L.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12835
C3  - Serbian Congress of Nuclear Medicine 2016 "Nuclear medicine: from function to molecular imaging and therapy" : Book of abstracts
T1  - Calibration, intercomparison and quality control of radionuclide calibrators used in nuclear medicine
SP  - 41
EP  - 41
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12835
ER  - 

@conference{
author = "Ciraj-Bjelac, Olivera and Saldarriaga Vargas and Janković, Drina and Vukanac, Ivana and Kandić, Aleksandar and Đurašević, Mirjana and Živanović, Miloš and Ćeklić, Sandra and Aranđić, Danijela and Struelens, L.",
year = "2016",
journal = "Serbian Congress of Nuclear Medicine 2016 "Nuclear medicine: from function to molecular imaging and therapy" : Book of abstracts",
title = "Calibration, intercomparison and quality control of radionuclide calibrators used in nuclear medicine",
pages = "41-41",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12835"
}

Ciraj-Bjelac, O., Saldarriaga Vargas, Janković, D., Vukanac, I., Kandić, A., Đurašević, M., Živanović, M., Ćeklić, S., Aranđić, D.,& Struelens, L.. (2016). Calibration, intercomparison and quality control of radionuclide calibrators used in nuclear medicine. in Serbian Congress of Nuclear Medicine 2016 "Nuclear medicine: from function to molecular imaging and therapy" : Book of abstracts, 41-41.
https://hdl.handle.net/21.15107/rcub_vinar_12835

Ciraj-Bjelac O, Saldarriaga Vargas, Janković D, Vukanac I, Kandić A, Đurašević M, Živanović M, Ćeklić S, Aranđić D, Struelens L. Calibration, intercomparison and quality control of radionuclide calibrators used in nuclear medicine. in Serbian Congress of Nuclear Medicine 2016 "Nuclear medicine: from function to molecular imaging and therapy" : Book of abstracts. 2016;:41-41.
https://hdl.handle.net/21.15107/rcub_vinar_12835 .

Ciraj-Bjelac, Olivera, Saldarriaga Vargas, Janković, Drina, Vukanac, Ivana, Kandić, Aleksandar, Đurašević, Mirjana, Živanović, Miloš, Ćeklić, Sandra, Aranđić, Danijela, Struelens, L., "Calibration, intercomparison and quality control of radionuclide calibrators used in nuclear medicine" in Serbian Congress of Nuclear Medicine 2016 "Nuclear medicine: from function to molecular imaging and therapy" : Book of abstracts (2016):41-41,
https://hdl.handle.net/21.15107/rcub_vinar_12835 .

TY  - CONF
AU  - Rafajlović, Stefan
AU  - Aranđić, Danijela
AU  - Božović, Predrag
AU  - Ćeklić, Sandra
AU  - Lazarević, Đorđe R.
AU  - Ciraj-Bjelac, Olivera
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7167
AB  - The purpose of this study is to investigate the radiation dose and technical image quality in mammography in Serbia after two years of implementation of the breast screening programme. A total of 186 mammography units, including Full-Field Digital Mammography (FFDM), Computed Radiography (CR) and Screen-Film Mammography (SFM) units were used in the patient dose and image quality assessment. Patient dose, in terms of Mean Glandular Dose (MGD), was assessed for the standard breast, while image quality was evaluated in terms of spatial resolution, threshold contrast visibility and Contrast to Noise Ratio (CNR) for CR and FFDM units. The mean MGD assessed was (1.8 +/- 0.94) mGy, (1.3 +/- 0.51) and (1.7 +/- 0.64) for CR, FFDM and SFM, respectively. Spatial resolution was better than 12 lp/mm only for 3/186 (1.6%) units. In 34/186 (1896) units, spatial resolution was less than 5 lp/mm. Threshold contrast visibility was better than 1.2 in 41/186 (22%). Mean CNR for CR and FFDM units was 5.2 2.2. Following the initial implementation at the beginning of the population-based breast cancer screening campaign, it is essential to establish an effective system of regular and periodic Quality Control (QC) tests and to ensure that high-quality mammograms with minimal possible radiation dose to population are included in the screening.
C3  - RAD Conference Proceedings
T1  - Mammography in Serbia: Image Quality and Radiation Dose
SP  - 29
EP  - 32
DO  - 10.21175/RadProc.2016.08
ER  - 

@conference{
author = "Rafajlović, Stefan and Aranđić, Danijela and Božović, Predrag and Ćeklić, Sandra and Lazarević, Đorđe R. and Ciraj-Bjelac, Olivera",
year = "2016",
abstract = "The purpose of this study is to investigate the radiation dose and technical image quality in mammography in Serbia after two years of implementation of the breast screening programme. A total of 186 mammography units, including Full-Field Digital Mammography (FFDM), Computed Radiography (CR) and Screen-Film Mammography (SFM) units were used in the patient dose and image quality assessment. Patient dose, in terms of Mean Glandular Dose (MGD), was assessed for the standard breast, while image quality was evaluated in terms of spatial resolution, threshold contrast visibility and Contrast to Noise Ratio (CNR) for CR and FFDM units. The mean MGD assessed was (1.8 +/- 0.94) mGy, (1.3 +/- 0.51) and (1.7 +/- 0.64) for CR, FFDM and SFM, respectively. Spatial resolution was better than 12 lp/mm only for 3/186 (1.6%) units. In 34/186 (1896) units, spatial resolution was less than 5 lp/mm. Threshold contrast visibility was better than 1.2 in 41/186 (22%). Mean CNR for CR and FFDM units was 5.2 2.2. Following the initial implementation at the beginning of the population-based breast cancer screening campaign, it is essential to establish an effective system of regular and periodic Quality Control (QC) tests and to ensure that high-quality mammograms with minimal possible radiation dose to population are included in the screening.",
journal = "RAD Conference Proceedings",
title = "Mammography in Serbia: Image Quality and Radiation Dose",
pages = "29-32",
doi = "10.21175/RadProc.2016.08"
}

Rafajlović, S., Aranđić, D., Božović, P., Ćeklić, S., Lazarević, Đ. R.,& Ciraj-Bjelac, O.. (2016). Mammography in Serbia: Image Quality and Radiation Dose. in RAD Conference Proceedings, 29-32.
https://doi.org/10.21175/RadProc.2016.08

Rafajlović S, Aranđić D, Božović P, Ćeklić S, Lazarević ĐR, Ciraj-Bjelac O. Mammography in Serbia: Image Quality and Radiation Dose. in RAD Conference Proceedings. 2016;:29-32.
doi:10.21175/RadProc.2016.08 .

Rafajlović, Stefan, Aranđić, Danijela, Božović, Predrag, Ćeklić, Sandra, Lazarević, Đorđe R., Ciraj-Bjelac, Olivera, "Mammography in Serbia: Image Quality and Radiation Dose" in RAD Conference Proceedings (2016):29-32,
https://doi.org/10.21175/RadProc.2016.08 . .

TY  - JOUR
AU  - Kaljević, Jelica
AU  - Ciraj-Bjelac, Olivera
AU  - Stanković, Jelena S.
AU  - Aranđić, Danijela
AU  - Božović, Predrag
AU  - Antić, Vojislav
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1256
AB  - The objective of this work is to assess the occupational dose in interventional cardiology in a large hospital in Belgrade, Serbia. A double-dosimetry method was applied for the estimation of whole-body dose, using thermoluminescent dosemeters, calibrated in terms of the personal dose equivalent H-p(10). Besides the double-dosimetry method, eye dose was also estimated by means of measuring ambient dose equivalent, H*(10), and doses per procedure were reported. Doses were assessed for 13 physicians, 6 nurses and 10 radiographers, for 2 consequent years. The maximum annual effective dose assessed was 4.3, 2.1 and 1.3 mSv for physicians, nurses and radiographers, respectively. The maximum doses recorded by the dosemeter worn at the collar level (over the apron) were 16.8, 11.9 and 4.5 mSv, respectively. This value was used for the eye lens dose assessment. Estimated doses are in accordance with or higher than annual dose limits for the occupational exposure.
T2  - Radiation Protection Dosimetry
T1  - Occupational Dose Assessment in Interventional Cardiology in Serbia
VL  - 170
IS  - 1-4
SP  - 279
EP  - 283
DO  - 10.1093/rpd/ncv439
ER  - 

@article{
author = "Kaljević, Jelica and Ciraj-Bjelac, Olivera and Stanković, Jelena S. and Aranđić, Danijela and Božović, Predrag and Antić, Vojislav",
year = "2016",
abstract = "The objective of this work is to assess the occupational dose in interventional cardiology in a large hospital in Belgrade, Serbia. A double-dosimetry method was applied for the estimation of whole-body dose, using thermoluminescent dosemeters, calibrated in terms of the personal dose equivalent H-p(10). Besides the double-dosimetry method, eye dose was also estimated by means of measuring ambient dose equivalent, H*(10), and doses per procedure were reported. Doses were assessed for 13 physicians, 6 nurses and 10 radiographers, for 2 consequent years. The maximum annual effective dose assessed was 4.3, 2.1 and 1.3 mSv for physicians, nurses and radiographers, respectively. The maximum doses recorded by the dosemeter worn at the collar level (over the apron) were 16.8, 11.9 and 4.5 mSv, respectively. This value was used for the eye lens dose assessment. Estimated doses are in accordance with or higher than annual dose limits for the occupational exposure.",
journal = "Radiation Protection Dosimetry",
title = "Occupational Dose Assessment in Interventional Cardiology in Serbia",
volume = "170",
number = "1-4",
pages = "279-283",
doi = "10.1093/rpd/ncv439"
}

Kaljević, J., Ciraj-Bjelac, O., Stanković, J. S., Aranđić, D., Božović, P.,& Antić, V.. (2016). Occupational Dose Assessment in Interventional Cardiology in Serbia. in Radiation Protection Dosimetry, 170(1-4), 279-283.
https://doi.org/10.1093/rpd/ncv439

Kaljević J, Ciraj-Bjelac O, Stanković JS, Aranđić D, Božović P, Antić V. Occupational Dose Assessment in Interventional Cardiology in Serbia. in Radiation Protection Dosimetry. 2016;170(1-4):279-283.
doi:10.1093/rpd/ncv439 .

Kaljević, Jelica, Ciraj-Bjelac, Olivera, Stanković, Jelena S., Aranđić, Danijela, Božović, Predrag, Antić, Vojislav, "Occupational Dose Assessment in Interventional Cardiology in Serbia" in Radiation Protection Dosimetry, 170, no. 1-4 (2016):279-283,
https://doi.org/10.1093/rpd/ncv439 . .

TY  - JOUR
AU  - Kaljević, Jelica
AU  - Stanković, Koviljka
AU  - Stanković, Jelena S.
AU  - Ciraj-Bjelac, Olivera
AU  - Aranđić, Danijela
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1257
AB  - Manipulation of unsealed radiation sources in nuclear medicine (NM) departments involves non-uniform exposure to staff and high skin doses to the upper extremities from direct and scattered radiations. Conducted studies have shown that the annual dose limits could be exceeded and the continuous dose monitoring of NM workers hands is needed. The aim of this article is to show results of hand dose monitoring in terms of operational quantity H-p(0.07) for occupationally exposed NM workers to beta and gamma radiations in the largest NM centre in Serbia. Dose assessment was done by means of thermoluminescent ring dosemeters DXT-RAD (LiF:Mg,Ti). Monthly and annual doses were evaluated for a 5-y period (2010-14). Monitored NM staff was categorised according to the type of work, as nurses, radiographers, laboratory technicians and radiochemists. Performed evaluation showed that annual hand doses were within the annual limit for all staff categories, but further optimisation of working practice is needed.
T2  - Radiation Protection Dosimetry
T1  - Hand Dose Evaluation of Occupationally Exposed Staff in Nuclear Medicine
VL  - 170
IS  - 1-4
SP  - 292
EP  - 296
DO  - 10.1093/rpd/ncv500
ER  - 

@article{
author = "Kaljević, Jelica and Stanković, Koviljka and Stanković, Jelena S. and Ciraj-Bjelac, Olivera and Aranđić, Danijela",
year = "2016",
abstract = "Manipulation of unsealed radiation sources in nuclear medicine (NM) departments involves non-uniform exposure to staff and high skin doses to the upper extremities from direct and scattered radiations. Conducted studies have shown that the annual dose limits could be exceeded and the continuous dose monitoring of NM workers hands is needed. The aim of this article is to show results of hand dose monitoring in terms of operational quantity H-p(0.07) for occupationally exposed NM workers to beta and gamma radiations in the largest NM centre in Serbia. Dose assessment was done by means of thermoluminescent ring dosemeters DXT-RAD (LiF:Mg,Ti). Monthly and annual doses were evaluated for a 5-y period (2010-14). Monitored NM staff was categorised according to the type of work, as nurses, radiographers, laboratory technicians and radiochemists. Performed evaluation showed that annual hand doses were within the annual limit for all staff categories, but further optimisation of working practice is needed.",
journal = "Radiation Protection Dosimetry",
title = "Hand Dose Evaluation of Occupationally Exposed Staff in Nuclear Medicine",
volume = "170",
number = "1-4",
pages = "292-296",
doi = "10.1093/rpd/ncv500"
}

Kaljević, J., Stanković, K., Stanković, J. S., Ciraj-Bjelac, O.,& Aranđić, D.. (2016). Hand Dose Evaluation of Occupationally Exposed Staff in Nuclear Medicine. in Radiation Protection Dosimetry, 170(1-4), 292-296.
https://doi.org/10.1093/rpd/ncv500

Kaljević J, Stanković K, Stanković JS, Ciraj-Bjelac O, Aranđić D. Hand Dose Evaluation of Occupationally Exposed Staff in Nuclear Medicine. in Radiation Protection Dosimetry. 2016;170(1-4):292-296.
doi:10.1093/rpd/ncv500 .

Kaljević, Jelica, Stanković, Koviljka, Stanković, Jelena S., Ciraj-Bjelac, Olivera, Aranđić, Danijela, "Hand Dose Evaluation of Occupationally Exposed Staff in Nuclear Medicine" in Radiation Protection Dosimetry, 170, no. 1-4 (2016):292-296,
https://doi.org/10.1093/rpd/ncv500 . .

TY  - JOUR
AU  - Ciraj-Bjelac, Olivera
AU  - Antić, Vojislav
AU  - Selakovic, Jovana
AU  - Božović, Predrag
AU  - Aranđić, Danijela
AU  - Pavlović, Siniša U.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1409
AB  - The purpose of this study was to assess the patient exposure and staff eye dose levels during implantation procedures for all types of pacemaker therapy devices performed under fluoroscopic guidance and to investigate potential correlation between patients and staff dose levels. The mean eye dose during pacemaker/defibrillator implementation was 12 mu Sv for the first operator, 8.7 mu Sv for the second operator/nurse and 0.50 mu Sv for radiographer. Corresponding values for cardiac resynchronisation therapy procedures were 30, 26 and 2.0 mu Sv, respectively. Significant (p LT 0.01) correlation between the eye dose and the kerma-area product was found for the first operator and radiographers, but not for other staff categories. The study revealed eye dose per procedure and eye dose normalised to patient dose indices for different staff categories and provided an input for radiation protection in electrophysiology procedures.
T2  - Radiation Protection Dosimetry
T1  - Eye Lens Exposure to Medical Staff Performing Electrophysiology Procedures: Dose Assessment and Correlation to Patient Dose
VL  - 172
IS  - 4
SP  - 475
EP  - 482
DO  - 10.1093/rpd/ncv552
ER  - 

@article{
author = "Ciraj-Bjelac, Olivera and Antić, Vojislav and Selakovic, Jovana and Božović, Predrag and Aranđić, Danijela and Pavlović, Siniša U.",
year = "2016",
abstract = "The purpose of this study was to assess the patient exposure and staff eye dose levels during implantation procedures for all types of pacemaker therapy devices performed under fluoroscopic guidance and to investigate potential correlation between patients and staff dose levels. The mean eye dose during pacemaker/defibrillator implementation was 12 mu Sv for the first operator, 8.7 mu Sv for the second operator/nurse and 0.50 mu Sv for radiographer. Corresponding values for cardiac resynchronisation therapy procedures were 30, 26 and 2.0 mu Sv, respectively. Significant (p LT 0.01) correlation between the eye dose and the kerma-area product was found for the first operator and radiographers, but not for other staff categories. The study revealed eye dose per procedure and eye dose normalised to patient dose indices for different staff categories and provided an input for radiation protection in electrophysiology procedures.",
journal = "Radiation Protection Dosimetry",
title = "Eye Lens Exposure to Medical Staff Performing Electrophysiology Procedures: Dose Assessment and Correlation to Patient Dose",
volume = "172",
number = "4",
pages = "475-482",
doi = "10.1093/rpd/ncv552"
}

Ciraj-Bjelac, O., Antić, V., Selakovic, J., Božović, P., Aranđić, D.,& Pavlović, S. U.. (2016). Eye Lens Exposure to Medical Staff Performing Electrophysiology Procedures: Dose Assessment and Correlation to Patient Dose. in Radiation Protection Dosimetry, 172(4), 475-482.
https://doi.org/10.1093/rpd/ncv552

Ciraj-Bjelac O, Antić V, Selakovic J, Božović P, Aranđić D, Pavlović SU. Eye Lens Exposure to Medical Staff Performing Electrophysiology Procedures: Dose Assessment and Correlation to Patient Dose. in Radiation Protection Dosimetry. 2016;172(4):475-482.
doi:10.1093/rpd/ncv552 .

Ciraj-Bjelac, Olivera, Antić, Vojislav, Selakovic, Jovana, Božović, Predrag, Aranđić, Danijela, Pavlović, Siniša U., "Eye Lens Exposure to Medical Staff Performing Electrophysiology Procedures: Dose Assessment and Correlation to Patient Dose" in Radiation Protection Dosimetry, 172, no. 4 (2016):475-482,
https://doi.org/10.1093/rpd/ncv552 . .

TY  - CONF
AU  - Ciraj-Bjelac, Olivera
AU  - Aranđić, Danijela
AU  - Božović, Predrag
AU  - Ćeklić, Sandra
AU  - Stanković, Jelena S.
AU  - Lazarević, Đorđe R.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7123
AB  - Fluoroscopy procedures may lead to increased radiation exposure of radiologists and other staff members. The objective of the study is to assess whole body radiation doses and doses to the eye in fluoroscopy procedures, based on measurements that allow for estimates of occupational doses when personal dosimeters have not been used. Four geometrical configurations were considered: overcouch x-ray tube with and without table mounted lead rubber curtains in place, undercouch x-ray tube with horizontal x-ray beam and undercouch x-ray tube with vertical x-ray beam. The doses were estimated using distribution of the scattered radiation and typical workload, as well as the pattern of used of protective tools. Estimated effective dose was in the range from few to 60 mu Sv per procedure for radiologist, and from few to 20 mu Sv per procedure for radiographer, depending on the geometrical configuration and level of personal protection. Corresponding unprotected eye doses were estimated to be in the range 0.03 - 2.8 mSv per procedure for radiologist and 0.02-0.78 mSv for radiographer. The presented results allowed for realistic estimations of the occupational whole body dose and dose to the eyes from the workload of the staff members and from the level of use of radiation protection tools when personal dosimeters have not been regularly used.
C3  - RAD Conference Proceedings
T1  - Assessment of Occupational Dose in Fluoroscopy Procedures When Individual Monitoring Is Not Utilized
SP  - 195
EP  - 198
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7123
ER  - 

@conference{
author = "Ciraj-Bjelac, Olivera and Aranđić, Danijela and Božović, Predrag and Ćeklić, Sandra and Stanković, Jelena S. and Lazarević, Đorđe R.",
year = "2015",
abstract = "Fluoroscopy procedures may lead to increased radiation exposure of radiologists and other staff members. The objective of the study is to assess whole body radiation doses and doses to the eye in fluoroscopy procedures, based on measurements that allow for estimates of occupational doses when personal dosimeters have not been used. Four geometrical configurations were considered: overcouch x-ray tube with and without table mounted lead rubber curtains in place, undercouch x-ray tube with horizontal x-ray beam and undercouch x-ray tube with vertical x-ray beam. The doses were estimated using distribution of the scattered radiation and typical workload, as well as the pattern of used of protective tools. Estimated effective dose was in the range from few to 60 mu Sv per procedure for radiologist, and from few to 20 mu Sv per procedure for radiographer, depending on the geometrical configuration and level of personal protection. Corresponding unprotected eye doses were estimated to be in the range 0.03 - 2.8 mSv per procedure for radiologist and 0.02-0.78 mSv for radiographer. The presented results allowed for realistic estimations of the occupational whole body dose and dose to the eyes from the workload of the staff members and from the level of use of radiation protection tools when personal dosimeters have not been regularly used.",
journal = "RAD Conference Proceedings",
title = "Assessment of Occupational Dose in Fluoroscopy Procedures When Individual Monitoring Is Not Utilized",
pages = "195-198",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7123"
}

Ciraj-Bjelac, O., Aranđić, D., Božović, P., Ćeklić, S., Stanković, J. S.,& Lazarević, Đ. R.. (2015). Assessment of Occupational Dose in Fluoroscopy Procedures When Individual Monitoring Is Not Utilized. in RAD Conference Proceedings, 195-198.
https://hdl.handle.net/21.15107/rcub_vinar_7123

Ciraj-Bjelac O, Aranđić D, Božović P, Ćeklić S, Stanković JS, Lazarević ĐR. Assessment of Occupational Dose in Fluoroscopy Procedures When Individual Monitoring Is Not Utilized. in RAD Conference Proceedings. 2015;:195-198.
https://hdl.handle.net/21.15107/rcub_vinar_7123 .

Ciraj-Bjelac, Olivera, Aranđić, Danijela, Božović, Predrag, Ćeklić, Sandra, Stanković, Jelena S., Lazarević, Đorđe R., "Assessment of Occupational Dose in Fluoroscopy Procedures When Individual Monitoring Is Not Utilized" in RAD Conference Proceedings (2015):195-198,
https://hdl.handle.net/21.15107/rcub_vinar_7123 .

TY  - JOUR
AU  - Stanković, Jelena S.
AU  - Marinković, Predrag
AU  - Ciraj-Bjelac, Olivera
AU  - Kaljević, Jelica
AU  - Aranđić, Danijela
AU  - Lazarević, Đorđe R.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/650
AB  - Pulse height distribution (PHD) registered by a spectrometer is influenced by various physical phenomena such as photon interactions as well as disturbance produced by the electronic circuits inside the spectrometer. Therefore, spectrometry measurements of gamma and X-ray radiation inaccurately represent primary spectra. In order to overcome spectrum disruption, spectrum unfolding has to be applied. One of the common tools used in the unfolding process is Monte Carlo simulation of spectrometer response to monochromatic photons. The purpose of this work is to develop a new method for simulating CdTe semiconductor spectrometer response to monochromatic photons that can be further used for the spectrum unfolding procedure. The method is based upon post-processing of the particle track (PTRAC) output file generated by the MCNP5 program. In addition to the spectrometry output, this method provides information for each specific photon interaction inside the spectrometer active volume, which is required when taking into account spectrometer charge collection. The PTRAC generated detector response and the measured spectrum were in good agreement. The results obtained showed that this method can be used to generate precise response functions of gamma and X-ray spectrometers.
T2  - Computer Physics Communications
T1  - Toward utilization of MCNP5 particle track output file for simulation problems in photon spectrometry
VL  - 195
SP  - 77
EP  - 83
DO  - 10.1016/j.cpc.2015.05.003
ER  - 

@article{
author = "Stanković, Jelena S. and Marinković, Predrag and Ciraj-Bjelac, Olivera and Kaljević, Jelica and Aranđić, Danijela and Lazarević, Đorđe R.",
year = "2015",
abstract = "Pulse height distribution (PHD) registered by a spectrometer is influenced by various physical phenomena such as photon interactions as well as disturbance produced by the electronic circuits inside the spectrometer. Therefore, spectrometry measurements of gamma and X-ray radiation inaccurately represent primary spectra. In order to overcome spectrum disruption, spectrum unfolding has to be applied. One of the common tools used in the unfolding process is Monte Carlo simulation of spectrometer response to monochromatic photons. The purpose of this work is to develop a new method for simulating CdTe semiconductor spectrometer response to monochromatic photons that can be further used for the spectrum unfolding procedure. The method is based upon post-processing of the particle track (PTRAC) output file generated by the MCNP5 program. In addition to the spectrometry output, this method provides information for each specific photon interaction inside the spectrometer active volume, which is required when taking into account spectrometer charge collection. The PTRAC generated detector response and the measured spectrum were in good agreement. The results obtained showed that this method can be used to generate precise response functions of gamma and X-ray spectrometers.",
journal = "Computer Physics Communications",
title = "Toward utilization of MCNP5 particle track output file for simulation problems in photon spectrometry",
volume = "195",
pages = "77-83",
doi = "10.1016/j.cpc.2015.05.003"
}

Stanković, J. S., Marinković, P., Ciraj-Bjelac, O., Kaljević, J., Aranđić, D.,& Lazarević, Đ. R.. (2015). Toward utilization of MCNP5 particle track output file for simulation problems in photon spectrometry. in Computer Physics Communications, 195, 77-83.
https://doi.org/10.1016/j.cpc.2015.05.003

Stanković JS, Marinković P, Ciraj-Bjelac O, Kaljević J, Aranđić D, Lazarević ĐR. Toward utilization of MCNP5 particle track output file for simulation problems in photon spectrometry. in Computer Physics Communications. 2015;195:77-83.
doi:10.1016/j.cpc.2015.05.003 .

Stanković, Jelena S., Marinković, Predrag, Ciraj-Bjelac, Olivera, Kaljević, Jelica, Aranđić, Danijela, Lazarević, Đorđe R., "Toward utilization of MCNP5 particle track output file for simulation problems in photon spectrometry" in Computer Physics Communications, 195 (2015):77-83,
https://doi.org/10.1016/j.cpc.2015.05.003 . .

TY  - JOUR
AU  - Ciraj-Bjelac, Olivera
AU  - Gavrilovic, Marijana
AU  - Aranđić, Danijela
AU  - Vujović, Milan
AU  - Božović, Predrag
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/669
AB  - Objective of this work is to evaluate radiation exposure from X-ray examinations in a large paediatric hospital in Serbia, including radiographic, fluoroscopic and computed tomography (CT) examinations in four age groups: 0-1, 1-5, 5-10 and 10-15 y. Incident air kerma was assessed for the following radiographies: chest (AP, PA, LAT), spine (AP, LAT), pelvis (AP), urinary tract (AP, PA) and skull (AP, PA, LAT). Kerma-area product was measured for the fluoroscopy examinations: barium swallow, barium meal, barium enema and micturating cystography. Dose in CT was assessed in terms of volume CT dose index and dose-length product for examinations of the head, chest and abdomen. The collected data were compared with other similar studies, which indicated a need to expand such survey to other paediatric hospitals in Serbia.
T2  - Radiation Protection Dosimetry
T1  - Radiation Exposure During X-Ray Examinations in a Large Paediatric Hospital in Serbia
VL  - 165
IS  - 1-4
SP  - 220
EP  - 225
DO  - 10.1093/rpd/ncv084
ER  - 

@article{
author = "Ciraj-Bjelac, Olivera and Gavrilovic, Marijana and Aranđić, Danijela and Vujović, Milan and Božović, Predrag",
year = "2015",
abstract = "Objective of this work is to evaluate radiation exposure from X-ray examinations in a large paediatric hospital in Serbia, including radiographic, fluoroscopic and computed tomography (CT) examinations in four age groups: 0-1, 1-5, 5-10 and 10-15 y. Incident air kerma was assessed for the following radiographies: chest (AP, PA, LAT), spine (AP, LAT), pelvis (AP), urinary tract (AP, PA) and skull (AP, PA, LAT). Kerma-area product was measured for the fluoroscopy examinations: barium swallow, barium meal, barium enema and micturating cystography. Dose in CT was assessed in terms of volume CT dose index and dose-length product for examinations of the head, chest and abdomen. The collected data were compared with other similar studies, which indicated a need to expand such survey to other paediatric hospitals in Serbia.",
journal = "Radiation Protection Dosimetry",
title = "Radiation Exposure During X-Ray Examinations in a Large Paediatric Hospital in Serbia",
volume = "165",
number = "1-4",
pages = "220-225",
doi = "10.1093/rpd/ncv084"
}

Ciraj-Bjelac, O., Gavrilovic, M., Aranđić, D., Vujović, M.,& Božović, P.. (2015). Radiation Exposure During X-Ray Examinations in a Large Paediatric Hospital in Serbia. in Radiation Protection Dosimetry, 165(1-4), 220-225.
https://doi.org/10.1093/rpd/ncv084

Ciraj-Bjelac O, Gavrilovic M, Aranđić D, Vujović M, Božović P. Radiation Exposure During X-Ray Examinations in a Large Paediatric Hospital in Serbia. in Radiation Protection Dosimetry. 2015;165(1-4):220-225.
doi:10.1093/rpd/ncv084 .

Ciraj-Bjelac, Olivera, Gavrilovic, Marijana, Aranđić, Danijela, Vujović, Milan, Božović, Predrag, "Radiation Exposure During X-Ray Examinations in a Large Paediatric Hospital in Serbia" in Radiation Protection Dosimetry, 165, no. 1-4 (2015):220-225,
https://doi.org/10.1093/rpd/ncv084 . .

TY  - JOUR
AU  - Vassileva, J.
AU  - Rehani, M.
AU  - Kostova-Lefterova, D.
AU  - Al-Naemi, H. M.
AU  - Al Suwaidi, J. S.
AU  - Aranđić, Danijela
AU  - Bashier, E. H. O.
AU  - Kodlulovich Renha, S.
AU  - El-Nachef, L.
AU  - Aguilar, J. G.
AU  - Gershan, Vesna
AU  - Gershkevitsh, E.
AU  - Gruppetta, E.
AU  - Hustuc, A.
AU  - Jauhari, A.
AU  - Kharita, Mohammad Hassan
AU  - Khelassi-Toutaoui, N.
AU  - Khosravi, H. R.
AU  - Khoury, H.
AU  - Kralik, I.
AU  - Mahere, S.
AU  - Mazuoliene, J.
AU  - Mora, P.
AU  - Muhogora, W.
AU  - Muthuvelu, P.
AU  - Nikodemova, D.
AU  - Novak, L.
AU  - Pallewatte, A.
AU  - Pekarovic, D.
AU  - Shaaban, M.
AU  - Shelly, E.
AU  - Stepanyan, K.
AU  - Thelsy, N.
AU  - Visrutaratna, P.
AU  - Zaman, A.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/668
AB  - The article reports from the largest international dose survey in paediatric computed tomography (CT) in 32 countries and proposes international diagnostic reference levels (DRLs) in terms of computed tomography dose index (CTDIvol) and dose length product (DLP). It also assesses whether mean or median values of individual facilities should be used. A total of 6115 individual patient data were recorded among four age groups: LT 1 y, GT 1-5 y, GT 5-10 y and GT 10-15 y. CTDIw, CTDIvol and DLP from the CT console were recorded in dedicated forms together with patient data and technical parameters. Statistical analysis was performed, and international DRLs were established at rounded 75th percentile values of distribution of median values from all CT facilities. The study presents evidence in favour of using median rather than mean of patient dose indices as the representative of typical local dose in a facility, and for establishing DRLs as third quartile of median values. International DRLs were established for paediatric CT examinations for routine head, chest and abdomen in the four age groups. DRLs for CTDIvol are similar to the reference values from other published reports, with some differences for chest and abdomen CT. Higher variations were observed between DLP values, based on a survey of whole multi-phase exams. It may be noted that other studies in literature were based on single phase only. DRLs reported in this article can be used in countries without sufficient medical physics support to identify non-optimised practice. Recommendations to improve the accuracy and importance of future surveys are provided.
T2  - Radiation Protection Dosimetry
T1  - A Study to Establish International Diagnostic Reference Levels for Paediatric Computed Tomography
VL  - 165
IS  - 1-4
SP  - 70
EP  - 80
DO  - 10.1093/rpd/ncv116
ER  - 

@article{
author = "Vassileva, J. and Rehani, M. and Kostova-Lefterova, D. and Al-Naemi, H. M. and Al Suwaidi, J. S. and Aranđić, Danijela and Bashier, E. H. O. and Kodlulovich Renha, S. and El-Nachef, L. and Aguilar, J. G. and Gershan, Vesna and Gershkevitsh, E. and Gruppetta, E. and Hustuc, A. and Jauhari, A. and Kharita, Mohammad Hassan and Khelassi-Toutaoui, N. and Khosravi, H. R. and Khoury, H. and Kralik, I. and Mahere, S. and Mazuoliene, J. and Mora, P. and Muhogora, W. and Muthuvelu, P. and Nikodemova, D. and Novak, L. and Pallewatte, A. and Pekarovic, D. and Shaaban, M. and Shelly, E. and Stepanyan, K. and Thelsy, N. and Visrutaratna, P. and Zaman, A.",
year = "2015",
abstract = "The article reports from the largest international dose survey in paediatric computed tomography (CT) in 32 countries and proposes international diagnostic reference levels (DRLs) in terms of computed tomography dose index (CTDIvol) and dose length product (DLP). It also assesses whether mean or median values of individual facilities should be used. A total of 6115 individual patient data were recorded among four age groups: LT 1 y, GT 1-5 y, GT 5-10 y and GT 10-15 y. CTDIw, CTDIvol and DLP from the CT console were recorded in dedicated forms together with patient data and technical parameters. Statistical analysis was performed, and international DRLs were established at rounded 75th percentile values of distribution of median values from all CT facilities. The study presents evidence in favour of using median rather than mean of patient dose indices as the representative of typical local dose in a facility, and for establishing DRLs as third quartile of median values. International DRLs were established for paediatric CT examinations for routine head, chest and abdomen in the four age groups. DRLs for CTDIvol are similar to the reference values from other published reports, with some differences for chest and abdomen CT. Higher variations were observed between DLP values, based on a survey of whole multi-phase exams. It may be noted that other studies in literature were based on single phase only. DRLs reported in this article can be used in countries without sufficient medical physics support to identify non-optimised practice. Recommendations to improve the accuracy and importance of future surveys are provided.",
journal = "Radiation Protection Dosimetry",
title = "A Study to Establish International Diagnostic Reference Levels for Paediatric Computed Tomography",
volume = "165",
number = "1-4",
pages = "70-80",
doi = "10.1093/rpd/ncv116"
}

Vassileva, J., Rehani, M., Kostova-Lefterova, D., Al-Naemi, H. M., Al Suwaidi, J. S., Aranđić, D., Bashier, E. H. O., Kodlulovich Renha, S., El-Nachef, L., Aguilar, J. G., Gershan, V., Gershkevitsh, E., Gruppetta, E., Hustuc, A., Jauhari, A., Kharita, M. H., Khelassi-Toutaoui, N., Khosravi, H. R., Khoury, H., Kralik, I., Mahere, S., Mazuoliene, J., Mora, P., Muhogora, W., Muthuvelu, P., Nikodemova, D., Novak, L., Pallewatte, A., Pekarovic, D., Shaaban, M., Shelly, E., Stepanyan, K., Thelsy, N., Visrutaratna, P.,& Zaman, A.. (2015). A Study to Establish International Diagnostic Reference Levels for Paediatric Computed Tomography. in Radiation Protection Dosimetry, 165(1-4), 70-80.
https://doi.org/10.1093/rpd/ncv116

Vassileva J, Rehani M, Kostova-Lefterova D, Al-Naemi HM, Al Suwaidi JS, Aranđić D, Bashier EHO, Kodlulovich Renha S, El-Nachef L, Aguilar JG, Gershan V, Gershkevitsh E, Gruppetta E, Hustuc A, Jauhari A, Kharita MH, Khelassi-Toutaoui N, Khosravi HR, Khoury H, Kralik I, Mahere S, Mazuoliene J, Mora P, Muhogora W, Muthuvelu P, Nikodemova D, Novak L, Pallewatte A, Pekarovic D, Shaaban M, Shelly E, Stepanyan K, Thelsy N, Visrutaratna P, Zaman A. A Study to Establish International Diagnostic Reference Levels for Paediatric Computed Tomography. in Radiation Protection Dosimetry. 2015;165(1-4):70-80.
doi:10.1093/rpd/ncv116 .

Vassileva, J., Rehani, M., Kostova-Lefterova, D., Al-Naemi, H. M., Al Suwaidi, J. S., Aranđić, Danijela, Bashier, E. H. O., Kodlulovich Renha, S., El-Nachef, L., Aguilar, J. G., Gershan, Vesna, Gershkevitsh, E., Gruppetta, E., Hustuc, A., Jauhari, A., Kharita, Mohammad Hassan, Khelassi-Toutaoui, N., Khosravi, H. R., Khoury, H., Kralik, I., Mahere, S., Mazuoliene, J., Mora, P., Muhogora, W., Muthuvelu, P., Nikodemova, D., Novak, L., Pallewatte, A., Pekarovic, D., Shaaban, M., Shelly, E., Stepanyan, K., Thelsy, N., Visrutaratna, P., Zaman, A., "A Study to Establish International Diagnostic Reference Levels for Paediatric Computed Tomography" in Radiation Protection Dosimetry, 165, no. 1-4 (2015):70-80,
https://doi.org/10.1093/rpd/ncv116 . .

TY  - JOUR
AU  - Aranđić, Danijela
AU  - Ciraj-Bjelac, Olivera
AU  - Hadnadjev, Darka
AU  - Stojanovic, Sanja
AU  - Božović, Predrag
AU  - Ćeklić, Sandra
AU  - Lazarević, Đorđe R.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7048
AB  - This work presents initial data on radiation doses in adult computed tomography (CT) in Serbia. Data were collected in terms of CT dose index (CTDIvol) and dose length product (DLP) values for head, chest and abdomen examination. The range of CTDIvol values was found to be 53-98, 11-34 and 8.5-227 mGy whereas for DLP was 803-1066, 350-845 and 1066-3078 mGy cm(-1) for head, chest and abdomen examination, respectively. Except for abdomen on one CT unit, all estimated values were in line with the reported data. This work also presents simple method on how to reduce radiation doses when scanning head. Using axial (step-and-shot) instead of helical mode and decreasing tube current-time product leads to significant dose reduction. CTDIvol was decreased by 20 % whereas DLP was reduced for a factor 2.
T2  - Radiation Protection Dosimetry
T1  - Radiation Doses in Adult Computed Tomography Practice in Serbia: Initial Results
VL  - 162
IS  - 1-2
SP  - 135
EP  - 138
DO  - 10.1093/rpd/ncu245
ER  - 

@article{
author = "Aranđić, Danijela and Ciraj-Bjelac, Olivera and Hadnadjev, Darka and Stojanovic, Sanja and Božović, Predrag and Ćeklić, Sandra and Lazarević, Đorđe R.",
year = "2014",
abstract = "This work presents initial data on radiation doses in adult computed tomography (CT) in Serbia. Data were collected in terms of CT dose index (CTDIvol) and dose length product (DLP) values for head, chest and abdomen examination. The range of CTDIvol values was found to be 53-98, 11-34 and 8.5-227 mGy whereas for DLP was 803-1066, 350-845 and 1066-3078 mGy cm(-1) for head, chest and abdomen examination, respectively. Except for abdomen on one CT unit, all estimated values were in line with the reported data. This work also presents simple method on how to reduce radiation doses when scanning head. Using axial (step-and-shot) instead of helical mode and decreasing tube current-time product leads to significant dose reduction. CTDIvol was decreased by 20 % whereas DLP was reduced for a factor 2.",
journal = "Radiation Protection Dosimetry",
title = "Radiation Doses in Adult Computed Tomography Practice in Serbia: Initial Results",
volume = "162",
number = "1-2",
pages = "135-138",
doi = "10.1093/rpd/ncu245"
}

Aranđić, D., Ciraj-Bjelac, O., Hadnadjev, D., Stojanovic, S., Božović, P., Ćeklić, S.,& Lazarević, Đ. R.. (2014). Radiation Doses in Adult Computed Tomography Practice in Serbia: Initial Results. in Radiation Protection Dosimetry, 162(1-2), 135-138.
https://doi.org/10.1093/rpd/ncu245

Aranđić D, Ciraj-Bjelac O, Hadnadjev D, Stojanovic S, Božović P, Ćeklić S, Lazarević ĐR. Radiation Doses in Adult Computed Tomography Practice in Serbia: Initial Results. in Radiation Protection Dosimetry. 2014;162(1-2):135-138.
doi:10.1093/rpd/ncu245 .

Aranđić, Danijela, Ciraj-Bjelac, Olivera, Hadnadjev, Darka, Stojanovic, Sanja, Božović, Predrag, Ćeklić, Sandra, Lazarević, Đorđe R., "Radiation Doses in Adult Computed Tomography Practice in Serbia: Initial Results" in Radiation Protection Dosimetry, 162, no. 1-2 (2014):135-138,
https://doi.org/10.1093/rpd/ncu245 . .

TY  - JOUR
AU  - Ćeklić, Sandra
AU  - Aranđić, Danijela
AU  - Živanović, Miloš Z.
AU  - Ciraj-Bjelac, Olivera
AU  - Lazarević, Đorđe R.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7049
AB  - The aim of this work was to investigate the different types of radiation detectors commonly used for radiation protection purposes as survey meters. The study was performed on survey meters that use different detectors as ionisation chamber, Geiger Mueller (GM) counter and scintillation detector. For each survey meter, energy dependence and angular response in X-and gamma-radiation fields was tested. The following commercially available survey meters were investigated: ionisation chambers Victoreen 451P, Babyline 31 and VA-J-15A, Geiger counter MRK-M87, 6150 AD6 and FAG FH 40F2 and scintillation counter 6150 ADB. As a source of gamma radiation, Cs-137 and Co-60 were used whereas X-ray radiation fields were generated using an X-ray unit. The radiation characteristics of the survey meters were mostly in compliance with references estimated by standard IEC 1017-2. However, some of them showed larger deviation at lower energies. GM counters exhibit strong energy dependence for low-energy photons.
T2  - Radiation Protection Dosimetry
T1  - Performance of Radiation Survey Meters in X- and Gamma-Radiation Fields
VL  - 162
IS  - 1-2
SP  - 139
EP  - 143
DO  - 10.1093/rpd/ncu246
ER  - 

@article{
author = "Ćeklić, Sandra and Aranđić, Danijela and Živanović, Miloš Z. and Ciraj-Bjelac, Olivera and Lazarević, Đorđe R.",
year = "2014",
abstract = "The aim of this work was to investigate the different types of radiation detectors commonly used for radiation protection purposes as survey meters. The study was performed on survey meters that use different detectors as ionisation chamber, Geiger Mueller (GM) counter and scintillation detector. For each survey meter, energy dependence and angular response in X-and gamma-radiation fields was tested. The following commercially available survey meters were investigated: ionisation chambers Victoreen 451P, Babyline 31 and VA-J-15A, Geiger counter MRK-M87, 6150 AD6 and FAG FH 40F2 and scintillation counter 6150 ADB. As a source of gamma radiation, Cs-137 and Co-60 were used whereas X-ray radiation fields were generated using an X-ray unit. The radiation characteristics of the survey meters were mostly in compliance with references estimated by standard IEC 1017-2. However, some of them showed larger deviation at lower energies. GM counters exhibit strong energy dependence for low-energy photons.",
journal = "Radiation Protection Dosimetry",
title = "Performance of Radiation Survey Meters in X- and Gamma-Radiation Fields",
volume = "162",
number = "1-2",
pages = "139-143",
doi = "10.1093/rpd/ncu246"
}

Ćeklić, S., Aranđić, D., Živanović, M. Z., Ciraj-Bjelac, O.,& Lazarević, Đ. R.. (2014). Performance of Radiation Survey Meters in X- and Gamma-Radiation Fields. in Radiation Protection Dosimetry, 162(1-2), 139-143.
https://doi.org/10.1093/rpd/ncu246

Ćeklić S, Aranđić D, Živanović MZ, Ciraj-Bjelac O, Lazarević ĐR. Performance of Radiation Survey Meters in X- and Gamma-Radiation Fields. in Radiation Protection Dosimetry. 2014;162(1-2):139-143.
doi:10.1093/rpd/ncu246 .

Ćeklić, Sandra, Aranđić, Danijela, Živanović, Miloš Z., Ciraj-Bjelac, Olivera, Lazarević, Đorđe R., "Performance of Radiation Survey Meters in X- and Gamma-Radiation Fields" in Radiation Protection Dosimetry, 162, no. 1-2 (2014):139-143,
https://doi.org/10.1093/rpd/ncu246 . .

TY  - JOUR
AU  - Antić, Vojislav
AU  - Ciraj-Bjelac, Olivera
AU  - Stanković, Jelena S.
AU  - Aranđić, Danijela
AU  - Todorović, Nataša
AU  - Lučić, Silvija
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/350
AB  - The purpose of this work is to evaluate the radiation exposure to nuclear medicine (NM) staff in the two positron emission tomography-computed tomography centres in Serbia and to investigate the possibilities for dose reduction. Dose levels in terms of H-p(10) for whole body and H-p(0.07) for hands of NM staff were assessed using thermoluminescence and electronic personal dosemeters. The assessed doses per procedure in terms of H-p(10) were 4.2-7 and 5-6 mu Sv, in two centres, respectively, whereas the extremity doses in terms of H-p(0.07) in one of the centres was 34-126 mu Sv procedure(-1). The whole-body doses per unit activity were 17-19 and 21-26 mu Sv GBq(-1) in two centres, respectively, and the normalised finger dose in one centre was 170-680 mu Sv GBq(-1). The maximal estimated annual whole-body doses in two centres were 3.4 and 2.0 mSv, while the corresponding extremity dose in the later one was 45 mSv. Improvements as introduction of automatic dispensing system and injection and optimisation of working practice resulted in dose reduction ranging from 12 up to 67%.
T2  - Radiation Protection Dosimetry
T1  - Radiation Exposure to Nuclear Medicine Staff Involved in Pet/Ct Practice in Serbia
VL  - 162
IS  - 4
SP  - 577
EP  - 585
DO  - 10.1093/rpd/ncu001
ER  - 

@article{
author = "Antić, Vojislav and Ciraj-Bjelac, Olivera and Stanković, Jelena S. and Aranđić, Danijela and Todorović, Nataša and Lučić, Silvija",
year = "2014",
abstract = "The purpose of this work is to evaluate the radiation exposure to nuclear medicine (NM) staff in the two positron emission tomography-computed tomography centres in Serbia and to investigate the possibilities for dose reduction. Dose levels in terms of H-p(10) for whole body and H-p(0.07) for hands of NM staff were assessed using thermoluminescence and electronic personal dosemeters. The assessed doses per procedure in terms of H-p(10) were 4.2-7 and 5-6 mu Sv, in two centres, respectively, whereas the extremity doses in terms of H-p(0.07) in one of the centres was 34-126 mu Sv procedure(-1). The whole-body doses per unit activity were 17-19 and 21-26 mu Sv GBq(-1) in two centres, respectively, and the normalised finger dose in one centre was 170-680 mu Sv GBq(-1). The maximal estimated annual whole-body doses in two centres were 3.4 and 2.0 mSv, while the corresponding extremity dose in the later one was 45 mSv. Improvements as introduction of automatic dispensing system and injection and optimisation of working practice resulted in dose reduction ranging from 12 up to 67%.",
journal = "Radiation Protection Dosimetry",
title = "Radiation Exposure to Nuclear Medicine Staff Involved in Pet/Ct Practice in Serbia",
volume = "162",
number = "4",
pages = "577-585",
doi = "10.1093/rpd/ncu001"
}

Antić, V., Ciraj-Bjelac, O., Stanković, J. S., Aranđić, D., Todorović, N.,& Lučić, S.. (2014). Radiation Exposure to Nuclear Medicine Staff Involved in Pet/Ct Practice in Serbia. in Radiation Protection Dosimetry, 162(4), 577-585.
https://doi.org/10.1093/rpd/ncu001

Antić V, Ciraj-Bjelac O, Stanković JS, Aranđić D, Todorović N, Lučić S. Radiation Exposure to Nuclear Medicine Staff Involved in Pet/Ct Practice in Serbia. in Radiation Protection Dosimetry. 2014;162(4):577-585.
doi:10.1093/rpd/ncu001 .

Antić, Vojislav, Ciraj-Bjelac, Olivera, Stanković, Jelena S., Aranđić, Danijela, Todorović, Nataša, Lučić, Silvija, "Radiation Exposure to Nuclear Medicine Staff Involved in Pet/Ct Practice in Serbia" in Radiation Protection Dosimetry, 162, no. 4 (2014):577-585,
https://doi.org/10.1093/rpd/ncu001 . .

TY  - JOUR
AU  - Stantic, Tomislav J.
AU  - Ciraj-Bjelac, Olivera
AU  - Stojanovic, Saida S.
AU  - Basta-Nikolić, Marijana D.
AU  - Aranđić, Danijela
AU  - Stoiljković, Dragana S.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5889
AB  - The objective of this paper is to measure the radiation dose and image quality in conventional screen-film mammography and full-field digital mammography in women referred to mammography examination. Participants underwent bilateral, two-view screen-film mammography or full-field digital mammography. The visibility of anatomical regions and overall clinical image quality was rated by experienced radiologists. Total of 387 women and 1548 mammograms were enrolled in the study. Image quality was assessed in terms of image quality score, whereas patient dose assessment was performed in terms of mean glandular dose. Average mean glandular dose for cranio-caudal projection was 1.5 mGy and 2.1 mGy in full-field digital mammography and screen-film mammography, respectively. For medio-lateral oblique projection, corresponding values were 2.3 and 2.1 mGy. Overall image quality criteria scoring was 0.82 and 0.99 for screen-film and digital systems, respectively. The scores were in the range from 0.11 to 1.0 for different anatomical structures. Overall, full-field digital mammography was superior both in terms of image quality and dose over the screen-film mammography. The results have indicated that phantom dose values can assist in setting the optimisation activities in mammography and for comparison between mammography units. To obtain accurate diagnostic information with an acceptable radiation dose to breast, it is necessary to periodically perform patient dose and image quality surveys in all mammography units.
T2  - Nuclear technology and radiation protection
T1  - Screen-Film Versus Full-Field Digital Mammography: Radiation Dose and Image Quality in a Large Teaching Hospital
VL  - 28
IS  - 4
SP  - 398
EP  - 405
DO  - 10.2298/NTRP1304398S
ER  - 

@article{
author = "Stantic, Tomislav J. and Ciraj-Bjelac, Olivera and Stojanovic, Saida S. and Basta-Nikolić, Marijana D. and Aranđić, Danijela and Stoiljković, Dragana S.",
year = "2013",
abstract = "The objective of this paper is to measure the radiation dose and image quality in conventional screen-film mammography and full-field digital mammography in women referred to mammography examination. Participants underwent bilateral, two-view screen-film mammography or full-field digital mammography. The visibility of anatomical regions and overall clinical image quality was rated by experienced radiologists. Total of 387 women and 1548 mammograms were enrolled in the study. Image quality was assessed in terms of image quality score, whereas patient dose assessment was performed in terms of mean glandular dose. Average mean glandular dose for cranio-caudal projection was 1.5 mGy and 2.1 mGy in full-field digital mammography and screen-film mammography, respectively. For medio-lateral oblique projection, corresponding values were 2.3 and 2.1 mGy. Overall image quality criteria scoring was 0.82 and 0.99 for screen-film and digital systems, respectively. The scores were in the range from 0.11 to 1.0 for different anatomical structures. Overall, full-field digital mammography was superior both in terms of image quality and dose over the screen-film mammography. The results have indicated that phantom dose values can assist in setting the optimisation activities in mammography and for comparison between mammography units. To obtain accurate diagnostic information with an acceptable radiation dose to breast, it is necessary to periodically perform patient dose and image quality surveys in all mammography units.",
journal = "Nuclear technology and radiation protection",
title = "Screen-Film Versus Full-Field Digital Mammography: Radiation Dose and Image Quality in a Large Teaching Hospital",
volume = "28",
number = "4",
pages = "398-405",
doi = "10.2298/NTRP1304398S"
}

Stantic, T. J., Ciraj-Bjelac, O., Stojanovic, S. S., Basta-Nikolić, M. D., Aranđić, D.,& Stoiljković, D. S.. (2013). Screen-Film Versus Full-Field Digital Mammography: Radiation Dose and Image Quality in a Large Teaching Hospital. in Nuclear technology and radiation protection, 28(4), 398-405.
https://doi.org/10.2298/NTRP1304398S

Stantic TJ, Ciraj-Bjelac O, Stojanovic SS, Basta-Nikolić MD, Aranđić D, Stoiljković DS. Screen-Film Versus Full-Field Digital Mammography: Radiation Dose and Image Quality in a Large Teaching Hospital. in Nuclear technology and radiation protection. 2013;28(4):398-405.
doi:10.2298/NTRP1304398S .

Stantic, Tomislav J., Ciraj-Bjelac, Olivera, Stojanovic, Saida S., Basta-Nikolić, Marijana D., Aranđić, Danijela, Stoiljković, Dragana S., "Screen-Film Versus Full-Field Digital Mammography: Radiation Dose and Image Quality in a Large Teaching Hospital" in Nuclear technology and radiation protection, 28, no. 4 (2013):398-405,
https://doi.org/10.2298/NTRP1304398S . .

TY  - JOUR
AU  - Antic, V.
AU  - Ciraj-Bjelac, Olivera
AU  - Rehani, M.
AU  - Aleksandrić, S.
AU  - Aranđić, Danijela
AU  - Ostojić, M.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5489
AB  - Workers involved in interventional cardiology procedures receive high eye lens dose if protection is not used. Currently, there is no suitable method for routine use for the measurement of eye dose. Since most angiography machines are equipped with suitable patient dosemeters, deriving factors linking staff eye doses to the patient doses can be helpful. In this study the patient kermaarea product, cumulative dose at an interventional reference point and eye dose in terms of H-p(3) of the cardiologists, nurses and radiographers for interventional cardiology procedures have been measured. Correlations between the patient dose and the staff eye dose were obtained. The mean eye dose was 121 Sv for the first operator, 33 Sv for the second operator/nurse and 12 Sv for radiographer. Normalised eye lens doses per unit kermaarea product were 0.94 Sv Gy(1) cm(2) for the first operator, 0.33 Sv Gy(1) cm(2) for the second operator/nurse and 0.16 Sv Gy(1) cm(2) for radiographers. Statistical analysis indicated that there is a weak but significant (p 0.01) correlation between the eye dose and the kermaarea product for all three staff categories. These values are based on a local practice and may provide useful reference for other studies for validation and for wider utilisation in assessing the eye dose using patient dose values.
T2  - Radiation Protection Dosimetry
T1  - Eye lens dosimetry in interventional cardiology: results of staff dose measurements and link to patient dose levels
VL  - 154
IS  - 3
SP  - 276
EP  - 284
DO  - 10.1093/rpd/ncs236
ER  - 

@article{
author = "Antic, V. and Ciraj-Bjelac, Olivera and Rehani, M. and Aleksandrić, S. and Aranđić, Danijela and Ostojić, M.",
year = "2013",
abstract = "Workers involved in interventional cardiology procedures receive high eye lens dose if protection is not used. Currently, there is no suitable method for routine use for the measurement of eye dose. Since most angiography machines are equipped with suitable patient dosemeters, deriving factors linking staff eye doses to the patient doses can be helpful. In this study the patient kermaarea product, cumulative dose at an interventional reference point and eye dose in terms of H-p(3) of the cardiologists, nurses and radiographers for interventional cardiology procedures have been measured. Correlations between the patient dose and the staff eye dose were obtained. The mean eye dose was 121 Sv for the first operator, 33 Sv for the second operator/nurse and 12 Sv for radiographer. Normalised eye lens doses per unit kermaarea product were 0.94 Sv Gy(1) cm(2) for the first operator, 0.33 Sv Gy(1) cm(2) for the second operator/nurse and 0.16 Sv Gy(1) cm(2) for radiographers. Statistical analysis indicated that there is a weak but significant (p 0.01) correlation between the eye dose and the kermaarea product for all three staff categories. These values are based on a local practice and may provide useful reference for other studies for validation and for wider utilisation in assessing the eye dose using patient dose values.",
journal = "Radiation Protection Dosimetry",
title = "Eye lens dosimetry in interventional cardiology: results of staff dose measurements and link to patient dose levels",
volume = "154",
number = "3",
pages = "276-284",
doi = "10.1093/rpd/ncs236"
}

Antic, V., Ciraj-Bjelac, O., Rehani, M., Aleksandrić, S., Aranđić, D.,& Ostojić, M.. (2013). Eye lens dosimetry in interventional cardiology: results of staff dose measurements and link to patient dose levels. in Radiation Protection Dosimetry, 154(3), 276-284.
https://doi.org/10.1093/rpd/ncs236

Antic V, Ciraj-Bjelac O, Rehani M, Aleksandrić S, Aranđić D, Ostojić M. Eye lens dosimetry in interventional cardiology: results of staff dose measurements and link to patient dose levels. in Radiation Protection Dosimetry. 2013;154(3):276-284.
doi:10.1093/rpd/ncs236 .

Antic, V., Ciraj-Bjelac, Olivera, Rehani, M., Aleksandrić, S., Aranđić, Danijela, Ostojić, M., "Eye lens dosimetry in interventional cardiology: results of staff dose measurements and link to patient dose levels" in Radiation Protection Dosimetry, 154, no. 3 (2013):276-284,
https://doi.org/10.1093/rpd/ncs236 . .

TY  - JOUR
AU  - Jablanovic, Dragoslav
AU  - Ciraj-Bjelac, Olivera
AU  - Damjanov, Nemanja
AU  - Seric, Srdjan
AU  - Radak-Perović, Marija
AU  - Aranđić, Danijela
AU  - Maksimović, Ružica
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5543
AB  - The purpose of this paper is to evaluate the image quality and dose to patients in the radiography of sacroiliac joints and to perform a clinical comparative study of digital and conventional screen-film radiography. Routine radiography of sacroiliac joint was performed in 60 patients using digital and screen-film radiography. The visibility of five anatomical regions and the overall image quality were rated by experienced radiologists. Patient dose assessment in terms of entrance surface air kerma (ESAK) was performed. The digital system showed slightly improved visualisation of specific anatomical structures. Overall image quality was significantly better in the digital when compared with the screen-film imaging system. The average ESAK was 2.4 mGy in screen-film and 3.6 mGy in digital radiography. The digital radiography provided equal or better visibility of anatomical details and overall image quality, but on higher dose levels. Therefore, the practice on digital systems must be optimised.
T2  - Radiation Protection Dosimetry
T1  - Screen-film versus digital radiography of sacroiliac joints: evaluation of image quality and dose to patients
VL  - 155
IS  - 1
SP  - 88
EP  - 95
DO  - 10.1093/rpd/ncs315
ER  - 

@article{
author = "Jablanovic, Dragoslav and Ciraj-Bjelac, Olivera and Damjanov, Nemanja and Seric, Srdjan and Radak-Perović, Marija and Aranđić, Danijela and Maksimović, Ružica",
year = "2013",
abstract = "The purpose of this paper is to evaluate the image quality and dose to patients in the radiography of sacroiliac joints and to perform a clinical comparative study of digital and conventional screen-film radiography. Routine radiography of sacroiliac joint was performed in 60 patients using digital and screen-film radiography. The visibility of five anatomical regions and the overall image quality were rated by experienced radiologists. Patient dose assessment in terms of entrance surface air kerma (ESAK) was performed. The digital system showed slightly improved visualisation of specific anatomical structures. Overall image quality was significantly better in the digital when compared with the screen-film imaging system. The average ESAK was 2.4 mGy in screen-film and 3.6 mGy in digital radiography. The digital radiography provided equal or better visibility of anatomical details and overall image quality, but on higher dose levels. Therefore, the practice on digital systems must be optimised.",
journal = "Radiation Protection Dosimetry",
title = "Screen-film versus digital radiography of sacroiliac joints: evaluation of image quality and dose to patients",
volume = "155",
number = "1",
pages = "88-95",
doi = "10.1093/rpd/ncs315"
}

Jablanovic, D., Ciraj-Bjelac, O., Damjanov, N., Seric, S., Radak-Perović, M., Aranđić, D.,& Maksimović, R.. (2013). Screen-film versus digital radiography of sacroiliac joints: evaluation of image quality and dose to patients. in Radiation Protection Dosimetry, 155(1), 88-95.
https://doi.org/10.1093/rpd/ncs315

Jablanovic D, Ciraj-Bjelac O, Damjanov N, Seric S, Radak-Perović M, Aranđić D, Maksimović R. Screen-film versus digital radiography of sacroiliac joints: evaluation of image quality and dose to patients. in Radiation Protection Dosimetry. 2013;155(1):88-95.
doi:10.1093/rpd/ncs315 .

Jablanovic, Dragoslav, Ciraj-Bjelac, Olivera, Damjanov, Nemanja, Seric, Srdjan, Radak-Perović, Marija, Aranđić, Danijela, Maksimović, Ružica, "Screen-film versus digital radiography of sacroiliac joints: evaluation of image quality and dose to patients" in Radiation Protection Dosimetry, 155, no. 1 (2013):88-95,
https://doi.org/10.1093/rpd/ncs315 . .

TY  - JOUR
AU  - Aranđić, Danijela
AU  - Bonutti, F.
AU  - Biasizzo, E.
AU  - Ciraj-Bjelac, Olivera
AU  - Floreani, M.
AU  - Giustizieri, M.
AU  - Iaiza, F.
AU  - Inkoom, S.
AU  - Tommasini, G.
AU  - Padovani, Renato
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5517
AB  - The purpose of this study was to investigate radiation doses in cerebral perfusion computed tomography (CT) examination. As a part of routine patient monitoring, data were collected on patients in terms of the skin dose and CT dose index (CTDIvol) and dose-length product (DLP) values. For the estimation of the dose to the lens a phantom study was performed. Dose values for skin and lens were below the threshold for deterministic effects. The results were also compared with already published data. For better comparison, the effective dose was also estimated. The values collected on patients were in the ranges 230680 mGy for CTDI and 21202740 mGy cm for DLP, while the skin dose and estimated effective dose were 340800 mGy and 4.96.3 mSv, respectively. These values measured in the phantom study were similar, while the doses estimated to the lens were 53 and 51 mGy for the right and left lens, respectively.
T2  - Radiation Protection Dosimetry
T1  - Radiation doses in cerebral perfusion computed tomography: patient and phantom study
VL  - 154
IS  - 4
SP  - 459
EP  - 464
DO  - 10.1093/rpd/ncs260
ER  - 

@article{
author = "Aranđić, Danijela and Bonutti, F. and Biasizzo, E. and Ciraj-Bjelac, Olivera and Floreani, M. and Giustizieri, M. and Iaiza, F. and Inkoom, S. and Tommasini, G. and Padovani, Renato",
year = "2013",
abstract = "The purpose of this study was to investigate radiation doses in cerebral perfusion computed tomography (CT) examination. As a part of routine patient monitoring, data were collected on patients in terms of the skin dose and CT dose index (CTDIvol) and dose-length product (DLP) values. For the estimation of the dose to the lens a phantom study was performed. Dose values for skin and lens were below the threshold for deterministic effects. The results were also compared with already published data. For better comparison, the effective dose was also estimated. The values collected on patients were in the ranges 230680 mGy for CTDI and 21202740 mGy cm for DLP, while the skin dose and estimated effective dose were 340800 mGy and 4.96.3 mSv, respectively. These values measured in the phantom study were similar, while the doses estimated to the lens were 53 and 51 mGy for the right and left lens, respectively.",
journal = "Radiation Protection Dosimetry",
title = "Radiation doses in cerebral perfusion computed tomography: patient and phantom study",
volume = "154",
number = "4",
pages = "459-464",
doi = "10.1093/rpd/ncs260"
}

Aranđić, D., Bonutti, F., Biasizzo, E., Ciraj-Bjelac, O., Floreani, M., Giustizieri, M., Iaiza, F., Inkoom, S., Tommasini, G.,& Padovani, R.. (2013). Radiation doses in cerebral perfusion computed tomography: patient and phantom study. in Radiation Protection Dosimetry, 154(4), 459-464.
https://doi.org/10.1093/rpd/ncs260

Aranđić D, Bonutti F, Biasizzo E, Ciraj-Bjelac O, Floreani M, Giustizieri M, Iaiza F, Inkoom S, Tommasini G, Padovani R. Radiation doses in cerebral perfusion computed tomography: patient and phantom study. in Radiation Protection Dosimetry. 2013;154(4):459-464.
doi:10.1093/rpd/ncs260 .

Aranđić, Danijela, Bonutti, F., Biasizzo, E., Ciraj-Bjelac, Olivera, Floreani, M., Giustizieri, M., Iaiza, F., Inkoom, S., Tommasini, G., Padovani, Renato, "Radiation doses in cerebral perfusion computed tomography: patient and phantom study" in Radiation Protection Dosimetry, 154, no. 4 (2013):459-464,
https://doi.org/10.1093/rpd/ncs260 . .

TY  - JOUR
AU  - Hadnadjev, Darka R.
AU  - Aranđić, Danijela
AU  - Stojanovic, Sanja S.
AU  - Ciraj-Bjelac, Olivera
AU  - Božović, Predrag
AU  - Stanković, Jelena S.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5071
AB  - This paper presents an estimation of local diagnostic reference levels in computed tomography in a large teaching hospital. Local diagnostic reference levels, expressed in terms of volume weighted computed tomography dose index and dose-length product, were estimated for three most frequent adult computer tomography examinations: head, abdomen and pelvis combined, and thorax. The established local diagnostic reference levels values were similar or slightly higher compared to the available guidelines, indicating the possibility for optimization of current practice. Analyzing the protocols used here and recently published studies on dose reduction in computed tomography, a dose-reduction technique, was proposed to decrease tube current values in all three examinations. However, the optimization should be restricted only to standard-sized patients.
T2  - Nuclear technology and radiation protection
T1  - Patient Doses in Computed Tomography: An Assessment of Local Diagnostic Reference Levels in a Large Teaching Hospital
VL  - 27
IS  - 3
SP  - 305
EP  - 310
DO  - 10.2298/NTRP1203305H
ER  - 

@article{
author = "Hadnadjev, Darka R. and Aranđić, Danijela and Stojanovic, Sanja S. and Ciraj-Bjelac, Olivera and Božović, Predrag and Stanković, Jelena S.",
year = "2012",
abstract = "This paper presents an estimation of local diagnostic reference levels in computed tomography in a large teaching hospital. Local diagnostic reference levels, expressed in terms of volume weighted computed tomography dose index and dose-length product, were estimated for three most frequent adult computer tomography examinations: head, abdomen and pelvis combined, and thorax. The established local diagnostic reference levels values were similar or slightly higher compared to the available guidelines, indicating the possibility for optimization of current practice. Analyzing the protocols used here and recently published studies on dose reduction in computed tomography, a dose-reduction technique, was proposed to decrease tube current values in all three examinations. However, the optimization should be restricted only to standard-sized patients.",
journal = "Nuclear technology and radiation protection",
title = "Patient Doses in Computed Tomography: An Assessment of Local Diagnostic Reference Levels in a Large Teaching Hospital",
volume = "27",
number = "3",
pages = "305-310",
doi = "10.2298/NTRP1203305H"
}

Hadnadjev, D. R., Aranđić, D., Stojanovic, S. S., Ciraj-Bjelac, O., Božović, P.,& Stanković, J. S.. (2012). Patient Doses in Computed Tomography: An Assessment of Local Diagnostic Reference Levels in a Large Teaching Hospital. in Nuclear technology and radiation protection, 27(3), 305-310.
https://doi.org/10.2298/NTRP1203305H

Hadnadjev DR, Aranđić D, Stojanovic SS, Ciraj-Bjelac O, Božović P, Stanković JS. Patient Doses in Computed Tomography: An Assessment of Local Diagnostic Reference Levels in a Large Teaching Hospital. in Nuclear technology and radiation protection. 2012;27(3):305-310.
doi:10.2298/NTRP1203305H .

Hadnadjev, Darka R., Aranđić, Danijela, Stojanovic, Sanja S., Ciraj-Bjelac, Olivera, Božović, Predrag, Stanković, Jelena S., "Patient Doses in Computed Tomography: An Assessment of Local Diagnostic Reference Levels in a Large Teaching Hospital" in Nuclear technology and radiation protection, 27, no. 3 (2012):305-310,
https://doi.org/10.2298/NTRP1203305H . .

TY  - JOUR
AU  - Vassileva, Jenia
AU  - Rehani, Madan M.
AU  - Al-Dhuhli, Humoud
AU  - Al-Naemi, Huda M.
AU  - Al-Suwaidi, Jamila Salem
AU  - Appelgate, Kimberly
AU  - Aranđić, Danijela
AU  - Bashier, Einas Hamed Osman
AU  - Beganovic, Adnan
AU  - Benavente, Tony
AU  - Bieganski, Tadeusz
AU  - Dias, Simone
AU  - El-Nachef, Leila
AU  - Faj, Dario
AU  - Gamarra-Sanchez, Mirtha E.
AU  - Garcia-Aguilar, Juan
AU  - Gbelcova, L'ubka
AU  - Gershan, Vesna
AU  - Gershkevitsh, Eduard
AU  - Gruppetta, Edward
AU  - Hustuc, Alexandru
AU  - Ivanović, Sonja
AU  - Jauhari, Arif
AU  - Kharita, Mohammad Hassan
AU  - Kharuzhyk, Siarhei
AU  - Khelassi-Toutaoui, Nadia
AU  - Khosravi, Hamid Reza
AU  - Khoury, Helen
AU  - Kostova-Lefterova, Desislava
AU  - Kralik, Ivana
AU  - Liu, Lantao
AU  - Mazuoliene, Jolanta
AU  - Mora, Patricia
AU  - Muhogora, Wilbroad
AU  - Muthuvelu, Pirunthavany
AU  - Novak, Leos
AU  - Pallewatte, Aruna S.
AU  - Shaaban, Mohamed
AU  - Shelly, Esti
AU  - Stepanyan, Karapet
AU  - Teo, Eu-Leong Harvey J.
AU  - Thelsy, Naw
AU  - Visrutaratna, Pannee
AU  - Zaman, Areesha
AU  - Zontar, Dejan
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4810
AB  - OBJECTIVE. The purpose of this study was to assess the frequency of pediatric CT in 40 less-resourced countries and to determine the level of appropriateness in CT use. MATERIALS AND METHODS. Data on the increase in the number of CT examinations during 2007 and 2009 and appropriate use of CT examinations were collected, using standard forms, from 146 CT facilities at 126 hospitals. RESULTS. The lowest frequency of pediatric CT examinations in 2009 was in European facilities (4.3%), and frequencies in Asia (12.2%) and Africa (7.8%) were twice as high. Head CT is the most common CT examination in children, amounting to nearly 75% of all pediatric CT examinations. Although regulations in many countries assign radiologists with the main responsibility of deciding whether a radiologic examination should be performed, in fact, radiologists alone were responsible for only 6.3% of situations. Written referral guidelines for imaging were not available in almost one half of the CT facilities. Appropriateness criteria for CT examinations in children did not always follow guidelines set by agencies, in particular, for patients with accidental head trauma, infants with congenital torticollis, children with possible ventriculoperitoneal shunt malfunction, and young children ( LT 5 years old) with acute sinusitis. In about one third of situations, nonavailability of previous images and records on previously received patient doses have the potential to lead to unnecessary examinations and radiation doses. CONCLUSION. With increasing use of CT in children and a lack of use of appropriateness criteria, there is a strong need to implement guidelines to avoid unnecessary radiation doses to children.
T2  - American Journal of Roentgenology
T1  - IAEA Survey of Pediatric CT Practice in 40 Countries in Asia, Europe, Latin America, and Africa: Part 1, Frequency and Appropriateness
VL  - 198
IS  - 5
SP  - 1021
EP  - 1031
DO  - 10.2214/AJR.11.7273
ER  - 

@article{
author = "Vassileva, Jenia and Rehani, Madan M. and Al-Dhuhli, Humoud and Al-Naemi, Huda M. and Al-Suwaidi, Jamila Salem and Appelgate, Kimberly and Aranđić, Danijela and Bashier, Einas Hamed Osman and Beganovic, Adnan and Benavente, Tony and Bieganski, Tadeusz and Dias, Simone and El-Nachef, Leila and Faj, Dario and Gamarra-Sanchez, Mirtha E. and Garcia-Aguilar, Juan and Gbelcova, L'ubka and Gershan, Vesna and Gershkevitsh, Eduard and Gruppetta, Edward and Hustuc, Alexandru and Ivanović, Sonja and Jauhari, Arif and Kharita, Mohammad Hassan and Kharuzhyk, Siarhei and Khelassi-Toutaoui, Nadia and Khosravi, Hamid Reza and Khoury, Helen and Kostova-Lefterova, Desislava and Kralik, Ivana and Liu, Lantao and Mazuoliene, Jolanta and Mora, Patricia and Muhogora, Wilbroad and Muthuvelu, Pirunthavany and Novak, Leos and Pallewatte, Aruna S. and Shaaban, Mohamed and Shelly, Esti and Stepanyan, Karapet and Teo, Eu-Leong Harvey J. and Thelsy, Naw and Visrutaratna, Pannee and Zaman, Areesha and Zontar, Dejan",
year = "2012",
abstract = "OBJECTIVE. The purpose of this study was to assess the frequency of pediatric CT in 40 less-resourced countries and to determine the level of appropriateness in CT use. MATERIALS AND METHODS. Data on the increase in the number of CT examinations during 2007 and 2009 and appropriate use of CT examinations were collected, using standard forms, from 146 CT facilities at 126 hospitals. RESULTS. The lowest frequency of pediatric CT examinations in 2009 was in European facilities (4.3%), and frequencies in Asia (12.2%) and Africa (7.8%) were twice as high. Head CT is the most common CT examination in children, amounting to nearly 75% of all pediatric CT examinations. Although regulations in many countries assign radiologists with the main responsibility of deciding whether a radiologic examination should be performed, in fact, radiologists alone were responsible for only 6.3% of situations. Written referral guidelines for imaging were not available in almost one half of the CT facilities. Appropriateness criteria for CT examinations in children did not always follow guidelines set by agencies, in particular, for patients with accidental head trauma, infants with congenital torticollis, children with possible ventriculoperitoneal shunt malfunction, and young children ( LT 5 years old) with acute sinusitis. In about one third of situations, nonavailability of previous images and records on previously received patient doses have the potential to lead to unnecessary examinations and radiation doses. CONCLUSION. With increasing use of CT in children and a lack of use of appropriateness criteria, there is a strong need to implement guidelines to avoid unnecessary radiation doses to children.",
journal = "American Journal of Roentgenology",
title = "IAEA Survey of Pediatric CT Practice in 40 Countries in Asia, Europe, Latin America, and Africa: Part 1, Frequency and Appropriateness",
volume = "198",
number = "5",
pages = "1021-1031",
doi = "10.2214/AJR.11.7273"
}

Vassileva, J., Rehani, M. M., Al-Dhuhli, H., Al-Naemi, H. M., Al-Suwaidi, J. S., Appelgate, K., Aranđić, D., Bashier, E. H. O., Beganovic, A., Benavente, T., Bieganski, T., Dias, S., El-Nachef, L., Faj, D., Gamarra-Sanchez, M. E., Garcia-Aguilar, J., Gbelcova, L., Gershan, V., Gershkevitsh, E., Gruppetta, E., Hustuc, A., Ivanović, S., Jauhari, A., Kharita, M. H., Kharuzhyk, S., Khelassi-Toutaoui, N., Khosravi, H. R., Khoury, H., Kostova-Lefterova, D., Kralik, I., Liu, L., Mazuoliene, J., Mora, P., Muhogora, W., Muthuvelu, P., Novak, L., Pallewatte, A. S., Shaaban, M., Shelly, E., Stepanyan, K., Teo, E. H. J., Thelsy, N., Visrutaratna, P., Zaman, A.,& Zontar, D.. (2012). IAEA Survey of Pediatric CT Practice in 40 Countries in Asia, Europe, Latin America, and Africa: Part 1, Frequency and Appropriateness. in American Journal of Roentgenology, 198(5), 1021-1031.
https://doi.org/10.2214/AJR.11.7273

Vassileva J, Rehani MM, Al-Dhuhli H, Al-Naemi HM, Al-Suwaidi JS, Appelgate K, Aranđić D, Bashier EHO, Beganovic A, Benavente T, Bieganski T, Dias S, El-Nachef L, Faj D, Gamarra-Sanchez ME, Garcia-Aguilar J, Gbelcova L, Gershan V, Gershkevitsh E, Gruppetta E, Hustuc A, Ivanović S, Jauhari A, Kharita MH, Kharuzhyk S, Khelassi-Toutaoui N, Khosravi HR, Khoury H, Kostova-Lefterova D, Kralik I, Liu L, Mazuoliene J, Mora P, Muhogora W, Muthuvelu P, Novak L, Pallewatte AS, Shaaban M, Shelly E, Stepanyan K, Teo EHJ, Thelsy N, Visrutaratna P, Zaman A, Zontar D. IAEA Survey of Pediatric CT Practice in 40 Countries in Asia, Europe, Latin America, and Africa: Part 1, Frequency and Appropriateness. in American Journal of Roentgenology. 2012;198(5):1021-1031.
doi:10.2214/AJR.11.7273 .

Vassileva, Jenia, Rehani, Madan M., Al-Dhuhli, Humoud, Al-Naemi, Huda M., Al-Suwaidi, Jamila Salem, Appelgate, Kimberly, Aranđić, Danijela, Bashier, Einas Hamed Osman, Beganovic, Adnan, Benavente, Tony, Bieganski, Tadeusz, Dias, Simone, El-Nachef, Leila, Faj, Dario, Gamarra-Sanchez, Mirtha E., Garcia-Aguilar, Juan, Gbelcova, L'ubka, Gershan, Vesna, Gershkevitsh, Eduard, Gruppetta, Edward, Hustuc, Alexandru, Ivanović, Sonja, Jauhari, Arif, Kharita, Mohammad Hassan, Kharuzhyk, Siarhei, Khelassi-Toutaoui, Nadia, Khosravi, Hamid Reza, Khoury, Helen, Kostova-Lefterova, Desislava, Kralik, Ivana, Liu, Lantao, Mazuoliene, Jolanta, Mora, Patricia, Muhogora, Wilbroad, Muthuvelu, Pirunthavany, Novak, Leos, Pallewatte, Aruna S., Shaaban, Mohamed, Shelly, Esti, Stepanyan, Karapet, Teo, Eu-Leong Harvey J., Thelsy, Naw, Visrutaratna, Pannee, Zaman, Areesha, Zontar, Dejan, "IAEA Survey of Pediatric CT Practice in 40 Countries in Asia, Europe, Latin America, and Africa: Part 1, Frequency and Appropriateness" in American Journal of Roentgenology, 198, no. 5 (2012):1021-1031,
https://doi.org/10.2214/AJR.11.7273 . .

TY  - JOUR
AU  - Ciraj-Bjelac, Olivera
AU  - Faj, Dario
AU  - Stimac, Damir
AU  - Košutić, Duško D.
AU  - Aranđić, Danijela
AU  - Brkić, Hrvoje
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4280
AB  - The purpose of this study is to investigate the need for and the possible achievements of a comprehensive QA programme and to look at effects of simple corrective actions on image quality in Croatia and in Serbia. The paper focuses on activities related to the technical and radiological aspects of QA. The methodology consisted of two phases. The aim of the first phase was the initial assessment of mammography practice in terms of image quality, patient dose and equipment performance in selected number of mammography units in Croatia and Serbia. Subsequently, corrective actions were suggested and implemented. Then the same parameters were re-assessed. Most of the suggested corrective actions were simple, low-cost and possible to implement immediately, as these were related to working habits in mammography units, such as film processing and darkroom conditions. It has been demonstrated how simple quantitative assessment of image quality can be used for optimisation purposes. Analysis of image quality parameters as OD, gradient and contrast demonstrated general similarities between mammography practices in Croatia and Serbia. The applied methodology should be expanded to larger number of hospitals and applied on a regular basis. (C) 2009 Elsevier Ireland Ltd. All rights reserved.
T2  - European Journal of Radiology
T1  - Good reasons to implement quality assurance in nationwide breast cancer screening programs in Croatia and Serbia: Results from a pilot study
VL  - 78
IS  - 1
SP  - 122
EP  - 128
DO  - 10.1016/j.ejrad.2009.10.004
ER  - 

@article{
author = "Ciraj-Bjelac, Olivera and Faj, Dario and Stimac, Damir and Košutić, Duško D. and Aranđić, Danijela and Brkić, Hrvoje",
year = "2011",
abstract = "The purpose of this study is to investigate the need for and the possible achievements of a comprehensive QA programme and to look at effects of simple corrective actions on image quality in Croatia and in Serbia. The paper focuses on activities related to the technical and radiological aspects of QA. The methodology consisted of two phases. The aim of the first phase was the initial assessment of mammography practice in terms of image quality, patient dose and equipment performance in selected number of mammography units in Croatia and Serbia. Subsequently, corrective actions were suggested and implemented. Then the same parameters were re-assessed. Most of the suggested corrective actions were simple, low-cost and possible to implement immediately, as these were related to working habits in mammography units, such as film processing and darkroom conditions. It has been demonstrated how simple quantitative assessment of image quality can be used for optimisation purposes. Analysis of image quality parameters as OD, gradient and contrast demonstrated general similarities between mammography practices in Croatia and Serbia. The applied methodology should be expanded to larger number of hospitals and applied on a regular basis. (C) 2009 Elsevier Ireland Ltd. All rights reserved.",
journal = "European Journal of Radiology",
title = "Good reasons to implement quality assurance in nationwide breast cancer screening programs in Croatia and Serbia: Results from a pilot study",
volume = "78",
number = "1",
pages = "122-128",
doi = "10.1016/j.ejrad.2009.10.004"
}

Ciraj-Bjelac, O., Faj, D., Stimac, D., Košutić, D. D., Aranđić, D.,& Brkić, H.. (2011). Good reasons to implement quality assurance in nationwide breast cancer screening programs in Croatia and Serbia: Results from a pilot study. in European Journal of Radiology, 78(1), 122-128.
https://doi.org/10.1016/j.ejrad.2009.10.004

Ciraj-Bjelac O, Faj D, Stimac D, Košutić DD, Aranđić D, Brkić H. Good reasons to implement quality assurance in nationwide breast cancer screening programs in Croatia and Serbia: Results from a pilot study. in European Journal of Radiology. 2011;78(1):122-128.
doi:10.1016/j.ejrad.2009.10.004 .

Ciraj-Bjelac, Olivera, Faj, Dario, Stimac, Damir, Košutić, Duško D., Aranđić, Danijela, Brkić, Hrvoje, "Good reasons to implement quality assurance in nationwide breast cancer screening programs in Croatia and Serbia: Results from a pilot study" in European Journal of Radiology, 78, no. 1 (2011):122-128,
https://doi.org/10.1016/j.ejrad.2009.10.004 . .

TY  - JOUR
AU  - Ciraj-Bjelac, Olivera
AU  - Aranđić, Danijela
AU  - Košutić, Duško D.
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4541
AB  - The purpose of this work is to compare different methods for shielding calculation in computed tomography (CT). The BIR-IPEM (British Institute of Radiology and Institute of Physics in Engineering in Medicine) and NCRP (National Council on Radiation Protection) method were used for shielding thickness calculation. Scattered dose levels and calculated barrier thickness were also compared with those obtained by scatter dose measurements in the vicinity of a dedicated CT unit. Minimal requirement for protective barriers based on BIR-IPEM method ranged between 1.1 and 1.4 mm of lead demonstrating underestimation of up to 20 % and overestimation of up to 30 % when compared with thicknesses based on measured dose levels. For NCRP method, calculated thicknesses were 33 % higher (27-42 %). BIR-IPEM methodology-based results were comparable with values based on scattered dose measurements, while results obtained using NCRP methodology demonstrated an overestimation of the minimal required barrier thickness.
T2  - Radiation Protection Dosimetry
T1  - Comparison of Different Methods for Shielding Design in Computed Tomography
VL  - 147
IS  - 1-2
SP  - 133
EP  - 136
DO  - 10.1093/rpd/ncr287
ER  - 

@article{
author = "Ciraj-Bjelac, Olivera and Aranđić, Danijela and Košutić, Duško D.",
year = "2011",
abstract = "The purpose of this work is to compare different methods for shielding calculation in computed tomography (CT). The BIR-IPEM (British Institute of Radiology and Institute of Physics in Engineering in Medicine) and NCRP (National Council on Radiation Protection) method were used for shielding thickness calculation. Scattered dose levels and calculated barrier thickness were also compared with those obtained by scatter dose measurements in the vicinity of a dedicated CT unit. Minimal requirement for protective barriers based on BIR-IPEM method ranged between 1.1 and 1.4 mm of lead demonstrating underestimation of up to 20 % and overestimation of up to 30 % when compared with thicknesses based on measured dose levels. For NCRP method, calculated thicknesses were 33 % higher (27-42 %). BIR-IPEM methodology-based results were comparable with values based on scattered dose measurements, while results obtained using NCRP methodology demonstrated an overestimation of the minimal required barrier thickness.",
journal = "Radiation Protection Dosimetry",
title = "Comparison of Different Methods for Shielding Design in Computed Tomography",
volume = "147",
number = "1-2",
pages = "133-136",
doi = "10.1093/rpd/ncr287"
}

Ciraj-Bjelac, O., Aranđić, D.,& Košutić, D. D.. (2011). Comparison of Different Methods for Shielding Design in Computed Tomography. in Radiation Protection Dosimetry, 147(1-2), 133-136.
https://doi.org/10.1093/rpd/ncr287

Ciraj-Bjelac O, Aranđić D, Košutić DD. Comparison of Different Methods for Shielding Design in Computed Tomography. in Radiation Protection Dosimetry. 2011;147(1-2):133-136.
doi:10.1093/rpd/ncr287 .

Ciraj-Bjelac, Olivera, Aranđić, Danijela, Košutić, Duško D., "Comparison of Different Methods for Shielding Design in Computed Tomography" in Radiation Protection Dosimetry, 147, no. 1-2 (2011):133-136,
https://doi.org/10.1093/rpd/ncr287 . .