Central Laboratory for Radiological Protection, Warsaw, Poland.
Int J Occup Med Environ Health. 2023 Nov 27;36(5):587-595. doi: 10.13075/ijomeh.1896.02136. Epub 2023 Sep 28.
The iodine-131 (I-131) content in the thyroid of staff members working with this radionuclides has been measured with about 500 employees in about 25 hospital's departments of nuclear medicine performing therapy and diagnosis of thyroid disease in Poland. The measurements were performed with portable detection unit for measurements of radioiodine. This is consist with scintillation detector sodium iodine activated by thallium (NaI(Tl)) - battery-powered and portable tube base Multichannel Analyzer Canberra UniSPEC. Based on direct measurements of the iodine content, the effective dose equivalent for workers due to inhalation of I-131 was estimated. All individuals actively working with iodine show measurable amounts of this isotopes in their thyroids. The average measured activity in the thyroid of the nuclear medicine staff was found to be equal at average 550 Bq within the range 70 Bq-2.5 kBq. There is no apparent correlation between the measured I-131 levels and risk categories. Nevertheless the technical and nuclear medicine staff show higher I-131 thyroid level comparing to hospital services staff. Calculated maximum committed effective dose for particular exposed person is <10% of 20 mSv/year. Int J Occup Med Environ Health. 2023;36(5):587-95.
对波兰约 25 家核医学科从事甲状腺疾病治疗和诊断的医院的约 500 名工作人员进行了放射性碘-131（I-131）在甲状腺中含量的测量。使用便携式放射性碘测量设备进行了测量。该设备由闪烁探测器（NaI（Tl））组成，其由铊激活，电池供电，多道分析器为 Canberra UniSPEC，探头为盒式。根据碘含量的直接测量，估算了工作人员因吸入 I-131 而导致的有效剂量当量。所有从事碘工作的人员的甲状腺中都有可测量的这种同位素。发现核医学工作人员甲状腺中平均测量的放射性活度在 70 Bq-2.5 kBq 之间平均为 550 Bq。测量的 I-131 水平与风险类别之间没有明显的相关性。尽管如此，与医院服务人员相比，技术和核医学工作人员的 I-131 甲状腺水平更高。特定受照射人员的最大承诺有效剂量计算值<20 mSv/年的 10%。国际职业医学与环境卫生杂志。2023；36(5)：587-95。
