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

Abstract 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 scannin...

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Autores principales:	Kazuta Yamashita, Kosaku Higashino, Hiroaki Hayashi, Kazuki Takegami, Fumio Hayashi, Yoshihiro Tsuruo, Koichi Sairyo
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3e77582593c447c3a75eccd9c4cc5738
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spelling	oai:doaj.org-article:3e77582593c447c3a75eccd9c4cc57382021-12-02T15:52:59ZDirect measurement of radiation exposure dose to individual organs during diagnostic computed tomography examination10.1038/s41598-021-85060-52045-2322https://doaj.org/article/3e77582593c447c3a75eccd9c4cc57382021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-85060-5https://doaj.org/toc/2045-2322Abstract 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.Kazuta YamashitaKosaku HigashinoHiroaki HayashiKazuki TakegamiFumio HayashiYoshihiro TsuruoKoichi SairyoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kazuta Yamashita Kosaku Higashino Hiroaki Hayashi Kazuki Takegami Fumio Hayashi Yoshihiro Tsuruo Koichi Sairyo Direct measurement of radiation exposure dose to individual organs during diagnostic computed tomography examination
description	Abstract 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.
format	article
author	Kazuta Yamashita Kosaku Higashino Hiroaki Hayashi Kazuki Takegami Fumio Hayashi Yoshihiro Tsuruo Koichi Sairyo
author_facet	Kazuta Yamashita Kosaku Higashino Hiroaki Hayashi Kazuki Takegami Fumio Hayashi Yoshihiro Tsuruo Koichi Sairyo
author_sort	Kazuta Yamashita
title	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_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_sort	direct measurement of radiation exposure dose to individual organs during diagnostic computed tomography examination
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/3e77582593c447c3a75eccd9c4cc5738
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Direct measurement of radiation exposure dose to individual organs during diagnostic computed tomography examination

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