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Direct measurement of radiation exposure dose to individual organs during diagnostic computed tomography examination

Ionizing radiation from Computed tomography (CT) examinations and the associated health risks are growing concerns. The purpose of this study was to directly measure individual organ doses during routine clinical CT scanning protocols and to evaluate how these measurements vary with scanning conditi...

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Autores principales: Yamashita, Kazuta, Higashino, Kosaku, Hayashi, Hiroaki, Takegami, Kazuki, Hayashi, Fumio, Tsuruo, Yoshihiro, Sairyo, Koichi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7940429/
https://www.ncbi.nlm.nih.gov/pubmed/33686232
http://dx.doi.org/10.1038/s41598-021-85060-5
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author Yamashita, Kazuta
Higashino, Kosaku
Hayashi, Hiroaki
Takegami, Kazuki
Hayashi, Fumio
Tsuruo, Yoshihiro
Sairyo, Koichi
author_facet Yamashita, Kazuta
Higashino, Kosaku
Hayashi, Hiroaki
Takegami, Kazuki
Hayashi, Fumio
Tsuruo, Yoshihiro
Sairyo, Koichi
author_sort Yamashita, Kazuta
collection PubMed
description Ionizing radiation from Computed tomography (CT) examinations and the associated health risks are growing concerns. The purpose of this study was to directly measure individual organ doses during routine clinical CT scanning protocols and to evaluate how these measurements vary with scanning conditions. Optically stimulated luminescence (OSL) dosimeters were surgically implanted into individual organs of fresh non-embalmed whole-body cadavers. Whole-body, head, chest, and abdomen CT scans were taken of 6 cadavers by simulating common clinical methods. The dosimeters were extracted and the radiation exposure doses for each organ were calculated. Average values were used for analysis. Measured individual organ doses for whole-body routine CT protocol were less than 20 mGy for all organs. The measured doses of surface/shallow organs were higher than those of deep organs under the same irradiation conditions. At the same tube voltage and tube current, all internal organ doses were significantly higher for whole-body scans compared with abdominal scans. This study could provide valuable information on individual organ doses and their trends under various scanning conditions. These data could be referenced and used when considering CT examination in daily clinical situations.
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spelling pubmed-79404292021-03-10 Direct measurement of radiation exposure dose to individual organs during diagnostic computed tomography examination Yamashita, Kazuta Higashino, Kosaku Hayashi, Hiroaki Takegami, Kazuki Hayashi, Fumio Tsuruo, Yoshihiro Sairyo, Koichi Sci Rep Article Ionizing radiation from Computed tomography (CT) examinations and the associated health risks are growing concerns. The purpose of this study was to directly measure individual organ doses during routine clinical CT scanning protocols and to evaluate how these measurements vary with scanning conditions. Optically stimulated luminescence (OSL) dosimeters were surgically implanted into individual organs of fresh non-embalmed whole-body cadavers. Whole-body, head, chest, and abdomen CT scans were taken of 6 cadavers by simulating common clinical methods. The dosimeters were extracted and the radiation exposure doses for each organ were calculated. Average values were used for analysis. Measured individual organ doses for whole-body routine CT protocol were less than 20 mGy for all organs. The measured doses of surface/shallow organs were higher than those of deep organs under the same irradiation conditions. At the same tube voltage and tube current, all internal organ doses were significantly higher for whole-body scans compared with abdominal scans. This study could provide valuable information on individual organ doses and their trends under various scanning conditions. These data could be referenced and used when considering CT examination in daily clinical situations. Nature Publishing Group UK 2021-03-08 /pmc/articles/PMC7940429/ /pubmed/33686232 http://dx.doi.org/10.1038/s41598-021-85060-5 Text en © The Author(s) 2021, corrected publication 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Yamashita, Kazuta
Higashino, Kosaku
Hayashi, Hiroaki
Takegami, Kazuki
Hayashi, Fumio
Tsuruo, Yoshihiro
Sairyo, Koichi
Direct measurement of radiation exposure dose to individual organs during diagnostic computed tomography examination
title Direct measurement of radiation exposure dose to individual organs during diagnostic computed tomography examination
title_full Direct measurement of radiation exposure dose to individual organs during diagnostic computed tomography examination
title_fullStr Direct measurement of radiation exposure dose to individual organs during diagnostic computed tomography examination
title_full_unstemmed Direct measurement of radiation exposure dose to individual organs during diagnostic computed tomography examination
title_short Direct measurement of radiation exposure dose to individual organs during diagnostic computed tomography examination
title_sort direct measurement of radiation exposure dose to individual organs during diagnostic computed tomography examination
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7940429/
https://www.ncbi.nlm.nih.gov/pubmed/33686232
http://dx.doi.org/10.1038/s41598-021-85060-5
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