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目的 分析广东省近3年131I内照射监测情况，研究核医学工作人员甲状腺131I污染水平，为优化监测方案提供依据。方法 采用方便抽样法，抽取广东省内28家医院574人次核医学工作人员为研究对象，体外直接测量其甲状腺的131I活度，分析检出率差异并估算待积有效剂量。结果 广东省近3年在14家医院工作人员甲状腺中检出131I蓄积62人次(10.8%)，活度为154.8(13.2～8 730.6) Bq。调整后估算的全年摄入量为50.7(4.5～820.6) kBq，待积有效剂量为0.56(0.05～9.03) mSv/a，其中有8人≥2 mSv。不同岗位间护士检出率(19.6%)最高，其次为保洁(14.7%)，差异有统计学意义(P<0.05)。不同接触类型间以“给自动分装仪装药”检出率(23.3%)最高，以“进入甲状腺癌患者病房”平均检出活度495.4 Bq最高，差异均有统计学意义(P<0.05)。结论 广东省131I内照射监测发现已有工作人员超过调查水平，应开展常规个人131I内照射监测，增加监测频次。应重点关注护士、保洁等关键岗位，将保洁及外包分装人员纳入监测。
Abstract：Objective To analyze the monitoring data of 131I internal exposure in Guangdong Province over the past 3years, study the thyroid 131I contamination levels among nuclear medicine staff, and provide a basis for optimizing the monitoring plan. Methods Using a convenience sampling method, 574 detections of nuclear medicine staff from 28 hospitals in Guangdong Province were included in the study. The thyroid 131I activity was measured directly in vivo. Differences in detection rates were analyzed, and committed effective doses were estimated. Results Over the past 3 years in Guangdong Province, 131I accumulation was found in the thyroids of staff from 14 hospitals for 62(10.8%) detections, with an average activity of 154.8(13.2-8 730.6) Bq. The adjusted annual intake was 50.7(4.5-820.6) kBq. The committed effective dose was0.56(0.05-9.03) mSv/a, and the values were ≥ 2 mSv for 8 persons. Among different positions, nurses showed the highest detection rate(19.6%), followed by cleaners(14.7%), with significant differences(P<0.05). Among different exposure types,the detection rate was highest for loading medication into automatic dispenser(23.3%), and the mean activity was highest for entering thyroid cancer patient ward(495.4 Bq), with significant differences(P<0.05). Conclusion Monitoring of 131I internal exposure in Guangdong Province found that the radiation doses of some staff members had exceeded the threshold specified in other investigations. Routine personal 131I internal exposure monitoring should be conducted, with increased monitoring frequency. Priority should be given to nurses and cleaners, with monitoring extended to cleaners and outsourced dispensing staff.
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基本信息:
DOI：10.13491/j.issn.1004-714X.2026.03.001
中图分类号:R144.1
引用信息:
[1]余宏伟,龙旋,谭展,等.广东省2022—2024年核医学工作人员~(131)I内照射监测结果分析[J].中国辐射卫生,2026,35(03):313-318.DOI:10.13491/j.issn.1004-714X.2026.03.001.
基金信息:
国家重点研发计划（2022YFC2503204）; 广东省医学科学技术研究基金项目（C2021023）;广东省医学科学技术研究基金项目（B2023283）;广东省医学科学技术研究基金（A2024451）
2025-12-08
2025-12-08
2025-12-08