Issues in radiation dose measurement using electronic personal dosimeters during disaster relief activities.

IF 1.5 Q3 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Radiological Physics and Technology Pub Date : 2025-07-08 DOI:10.1007/s12194-025-00934-x

Akira Suzuki, Yoshiaki Hirofuji, Noriaki Miyaji, Ayaka Oikawa, Kentarou Funashima, Isami Takahashi

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引用次数: 0

Abstract

Purpose: In this study, we measured the radiation exposure of the medical relief team of the Japanese Red Cross Society (JRCS) members during the Noto Peninsula earthquake using electronic personal dosimeters (EPDs) and investigated the frequency of electromagnetic interference (EMI) events that caused abnormally high dose readings.

Methods: Six JRCS medical relief team members (two physicians, three nurses, and one logistics officer) involved in the Noto Peninsula earthquake disaster relief activities were provided with EPDs to measure their radiation exposure during the activity period. A background radiation dosimeter was also installed on-site to record ambient radiation levels.

Results: Over 2.5 days of disaster relief activities, the background radiation dose was 3.0 ± 3.0 μSv. However, the highest recorded dose among the team members was 2075.0 ± 207.5 μSv for a nurse, while the average dose for the other members was 40.0 ± 39.5 μSv. A significant radiation dose was observed despite no radioactive material dispersion.

Conclusions: Among the four individuals who exhibited abnormally high dose readings, three were operating digital devices at the time of measurement, suggesting a strong likelihood that electromagnetic interference was the cause. The effective management of radiation doses using EPDs during nuclear disasters requires the implementation of countermeasures against EMI from digital devices.

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救灾活动中使用电子个人剂量计测量辐射剂量的问题。

目的：本研究采用电子个人剂量计（EPDs）测量日本红十字会（JRCS）医疗救援队成员在诺托半岛地震期间的辐射暴露，并调查电磁干扰（EMI）事件导致异常高剂量读数的频率。方法：对6名参与诺托半岛地震救灾活动的JRCS医疗救援队员（2名医生、3名护士、1名后勤干事）发放epd，测量其活动期间的辐射暴露。现场亦安装了本底辐射剂量计，以记录环境辐射水平。结果：在2.5 d的救灾活动中，本底辐射剂量为3.0±3.0 μSv。其中护士的最高剂量为2075.0±207.5 μSv，其他人员的平均剂量为40.0±39.5 μSv。尽管没有放射性物质弥散，但仍观察到显著的辐射剂量。结论：在表现出异常高剂量读数的四个人中，有三人在测量时正在操作数字设备，这表明电磁干扰很可能是原因。在核灾难期间使用EPDs对辐射剂量进行有效管理，需要对来自数字设备的电磁干扰实施对策。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Radiological Physics and Technology RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-

CiteScore

3.00

自引率

12.50%

发文量

期刊介绍： The purpose of the journal Radiological Physics and Technology is to provide a forum for sharing new knowledge related to research and development in radiological science and technology, including medical physics and radiological technology in diagnostic radiology, nuclear medicine, and radiation therapy among many other radiological disciplines, as well as to contribute to progress and improvement in medical practice and patient health care.