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目的通过对~(131)Ba-GTP微球应用场所外照射辐射水平和放射防护状况的测量分析,为辐射防护最优化和有效控制其职业危害提供建议。方法了解典型的~(131)Ba-GTP微球操作过程和基本概况,采用主动式和被动式方法测量辐射剂量水平,通过分析工作人员在辐射场中的分布和居留,综合分析放射性职业危害水平。结果个人剂量监测数据和现场调查数据说明,正常工作情况下,从事~(131)Ba-GTP微球操作的工作人员一般接受的年剂量平均值为1.4mSv/a。结论 ~(131)Ba-GTP微球操作过程中的三个环节由于人员近距离接触放射源,外照射水平较高,应引起重视,并做好辐射防护最优化和相应的管理工作。
OBJECTIVE Through the measurement and analysis of radiation level and radiation protection status of ~ (131) Ba-GTP microspheres in the places of application, it provides suggestions for optimizing the radiation protection and effectively controlling the occupational hazards. Methods The typical 131I-Ba-GTP microspheres were observed during the operation and the basic situation. The active and passive methods were used to measure the radiation dose level. By analyzing the distribution and residence of workers in the radiation field, the level of occupational radioactive hazards was analyzed comprehensively. Results Personal dose monitoring data and field survey data show that under normal working conditions, the annual average dose of 131I-BaPTP-coated microspheres is 1.4mSv / a. Conclusion The three aspects of ~ (131) Ba-GTP microspheres should be paid more attention due to the close contact with radioactive sources and the higher level of external radiation. The radiation protection optimization and corresponding management should be done.