Assessment of foetal dose and occupational exposure for pregnant workers in nuclear medicine using the Taiwanese pregnancy phantom.

Autor:	Chang HT; Department of Biomedical Engineering and Environmental Sciences, National Tsing-Hua University, 101 Sec. 2, Kuang-Fu Rd., Hsinchu City 300, Taiwan.; Department of Radiation Protection, National Atomic Research Institute, 1000 Wenhua Rd., Jiaan Village, Longtan Dist., Taoyuan City 325, Taiwan., Chang YC; Department of Nuclear Medicine, Chang Gung Memorial Hospital at Linkou, 5 Fuxing St., Guishan Dist., Taoyuan City 333, Taiwan., Hsu FY; Department of Biomedical Engineering and Environmental Sciences, National Tsing-Hua University, 101 Sec. 2, Kuang-Fu Rd., Hsinchu City 300, Taiwan.; Nuclear Science and Technology Development Center, National Tsing Hua University, 101 Sec. 2, Kuang-Fu Rd., Hsinchu City 300, Taiwan., Hsu CH; Department of Biomedical Engineering and Environmental Sciences, National Tsing-Hua University, 101 Sec. 2, Kuang-Fu Rd., Hsinchu City 300, Taiwan.
Jazyk:	angličtina
Zdroj:	Radiation protection dosimetry [Radiat Prot Dosimetry] 2024 Sep 19; Vol. 200 (15), pp. 1433-1442.
DOI:	10.1093/rpd/ncae181
Abstrakt:	For pregnant workers in nuclear medicine, radiation doses can pose a risk to their foetus. However, foetal radiation doses cannot be measured directly. In this study, a method of estimating foetal radiation doses was developed through simulations and measurements of phantoms of pregnant women in the three trimesters. The uterus and abdominal surface doses for monoenergetic photons (137Cs) and medical diagnostic X-rays were measured, and uterine dose conversion coefficients (UDCCs) were calculated. The accuracy of the UDCC estimates were validated for measurements from thermoluminescent dosemeter (TLD) chips and TLD badges on the abdomen or chest. The foetal effective dose could be estimated using TLD chips and TLD badges on the abdomen or chest, or through literature estimation method. The proposed method can be used to easily and accurately estimate foetal effective doses from chest-worn TLD badges, ensuring accurate estimation in the early stage of pregnancy when a worker may not yet be wearing an abdominal badge. A flowchart for applying the UDCC method to approximate a foetal dose is also provided to ensure that total doses remain below the maximum of 1 mSv recommended in the International Commission on Radiological Protection 103 guidelines. (© The Author(s) 2024. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.)
Databáze:	MEDLINE
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