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 barri...er thickness.
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 . .
