This study aims to measure the indoor radon concentration (IRC) of 56 radiation areas at 34 medical institutions to assess their adequacy as required by the South Korean Ministry of Environment and international standards, and calculate the annual effective dose (AED) of individuals in radiation-related professions at each medical institution. The study was conducted for 9 months and the AED was calculated according to the South Korean Nuclear Safety and Security Commission’s equation. The environmental factors that can affect IRC were analyzed by medical institution, floor level, province and ventilation system. The IRC of eight radiation areas exceeded the recommendation of the International Commission on Radiological Protection, with max-AED and min-AED showing a difference of 1.42 mSv/y. Therefore, all radiation areas that exceed the recommended limits must set up preventative measures to minimize exposure. Furthermore, a systematic management plan involving the issuance of radon test reports is required.

中文翻译：

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韩国 34 家医疗机构 56 个辐射区的室内氡浓度和年有效剂量

本研究旨在测量 34 家医疗机构的 56 个辐射区域的室内氡浓度 (IRC)，以评估其是否符合韩国环境部和国际标准的要求，并计算个人在辐射中的年有效剂量 (AED) - 每个医疗机构的相关专业。该研究进行了 9 个月，根据韩国核安全和安保委员会的公式计算 AED。从医疗机构、楼层、省份、通风系统对影响IRC的环境因素进行了分析。八个辐射区域的 IRC 超过了国际放射防护委员会的建议，最大 AED 和最小 AED 的差异为 1.42 mSv/y。所以，所有超过推荐限值的辐射区域都必须采取预防措施，以尽量减少暴露。此外，还需要一个涉及发布氡测试报告的系统管理计划。