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目的调查2013年天津市15家三级综合性医院的放射工作人员外照射个人剂量情况。方法选取1 400名放射工作人员的监测结果,根据相关标准,按照相应的职业分类进行分析和评价。结果 1 400名放射工作人员全部低于职业照射水平的限值,人均外照射剂量为0.352 m Sv/a;诊断放射学人员平均为0.313 m Sv/a,牙科放射学人员平均为0.245 m Sv/a;核医学人员平均为0.646 m Sv/a,放射治疗人员平均为0.300 m Sv/a,介入放射学人员平均为0.445 m Sv/a;低于5 m Sv/a的人数占总人数的99.8%。结论天津市15家三级综合医院放射防护措施能够保证工作人员的个人剂量处于正常水平。在放射防护中应加强对核医学和介入放射学工作人员的防护管理。
Objective To investigate the personal exposure dose of radiation workers in 15 tertiary general hospitals in Tianjin in 2013. Methods The monitoring results of 1 400 radiation workers were selected and analyzed and evaluated according to relevant standards and according to the corresponding occupational classification. Results The 1 400 radiation workers were all below the limit of occupational exposure, the per capita external exposure dose was 0.352 m Sv / a, the average diagnostic radiologist was 0.313 m Sv / a, the average dental radiologist was 0.245 m Sv / a; the average nuclear medicine personnel was 0.646 m Sv / a; the radiation treatment personnel averaged 0.300 m Sv / a; the interventional radiology personnel averaged 0.445 m Sv / a; those below 5 m Sv / a accounted for 99.8% %. Conclusion The radiation protection measures of 15 tertiary general hospitals in Tianjin can ensure that the personal dose of the staff is at a normal level. In radiological protection, the protection and management of nuclear medicine and interventional radiology staff should be strengthened.