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Comparison of organ absorbed doses in whole-body computed tomography scans of paediatric and adult patient models estimated by different methods

Chipiga, Larisa ; Golikov, Vladislav ; Vodovatov, Aleksandr LU and Bernhardsson, Christian LU orcid (2021) In Radiation Protection Dosimetry 195(3-4). p.246-256
Abstract

This study aimed to identify the uncertainty in estimations of organ absorbed dose using dedicated software by comparing with corresponding doses measured in physical phantoms. The comparison was performed for whole-body computed tomography (CT) obtained as part of positron emission tomography. Whole-body CT scans provide an advantage in terms of comparison because all organs are in the primary beam of the irradiated area. Organ doses estimated by the different software programs (CT-Expo, VirtualDose and NCICT) were compared by thermoluminescent detector measurements in anthropomorphic phantoms in 1-y-old, 5-y-old and adult patients. Differences were within ~15% in 12 major organs. However, differences of ~30% were observed in organs... (More)

This study aimed to identify the uncertainty in estimations of organ absorbed dose using dedicated software by comparing with corresponding doses measured in physical phantoms. The comparison was performed for whole-body computed tomography (CT) obtained as part of positron emission tomography. Whole-body CT scans provide an advantage in terms of comparison because all organs are in the primary beam of the irradiated area. Organ doses estimated by the different software programs (CT-Expo, VirtualDose and NCICT) were compared by thermoluminescent detector measurements in anthropomorphic phantoms in 1-y-old, 5-y-old and adult patients. Differences were within ~15% in 12 major organs. However, differences of ~30% were observed in organs located at slightly different positions in the computational models compared to the physical phantoms. All investigated programs were deemed suitable for accurate estimation of organ absorbed dose.

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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Radiation Protection Dosimetry
volume
195
issue
3-4
pages
11 pages
publisher
Oxford University Press
external identifiers
  • scopus:85118597921
  • pmid:34132330
ISSN
0144-8420
DOI
10.1093/rpd/ncab086
project
Radiation protection in Eastern Europe
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2021 The Author(s) 2021. Published by Oxford University Press. All rights reserved.
id
4ba2a6fd-394f-4908-b012-a8201f685bb6
date added to LUP
2021-11-26 14:17:41
date last changed
2024-06-15 21:33:34
@article{4ba2a6fd-394f-4908-b012-a8201f685bb6,
  abstract     = {{<p>This study aimed to identify the uncertainty in estimations of organ absorbed dose using dedicated software by comparing with corresponding doses measured in physical phantoms. The comparison was performed for whole-body computed tomography (CT) obtained as part of positron emission tomography. Whole-body CT scans provide an advantage in terms of comparison because all organs are in the primary beam of the irradiated area. Organ doses estimated by the different software programs (CT-Expo, VirtualDose and NCICT) were compared by thermoluminescent detector measurements in anthropomorphic phantoms in 1-y-old, 5-y-old and adult patients. Differences were within ~15% in 12 major organs. However, differences of ~30% were observed in organs located at slightly different positions in the computational models compared to the physical phantoms. All investigated programs were deemed suitable for accurate estimation of organ absorbed dose. </p>}},
  author       = {{Chipiga, Larisa and Golikov, Vladislav and Vodovatov, Aleksandr and Bernhardsson, Christian}},
  issn         = {{0144-8420}},
  language     = {{eng}},
  month        = {{10}},
  number       = {{3-4}},
  pages        = {{246--256}},
  publisher    = {{Oxford University Press}},
  series       = {{Radiation Protection Dosimetry}},
  title        = {{Comparison of organ absorbed doses in whole-body computed tomography scans of paediatric and adult patient models estimated by different methods}},
  url          = {{http://dx.doi.org/10.1093/rpd/ncab086}},
  doi          = {{10.1093/rpd/ncab086}},
  volume       = {{195}},
  year         = {{2021}},
}