2000-2011年上海某医院放射工作人员个人剂量水平分析
Personal Radiation Doses of Radiology Workers in a Hospital in Shanghai, 2000-2011
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摘要:
目的 探讨放射诊疗工作人员外照射个人剂量水平的变化趋势和可能影响因素。 方法 采用热释光个人剂量计常规监测方法,对上海某医院放射诊疗工作人员在2000-2011 年的外照射个人剂量水平监测结果进行统计分析,共计1 200 人次。 结果 2000-2011 年12 年间该医院放射诊疗工作人员的人均年有效剂量为0.22~0.44 mSv/a,年均有效剂量中位数为0.25 mSv/a,其中核医学放射工作人员的年均有效剂量最高,为0.52 mSv/a。但各工种放射工作人员的剂量水平普遍低于国家标准规定的年均有效剂量限值和上海市及全国平均水平。 结论 该医院放射工作人员的年均有效剂量低于国家标准规定的个人剂量限值。 Abstract:Objective To observe the personal radiation doses of radiology workers in a hospital in Shanghai. Methods Thermoluminescence dosimetry method was adopted to record the personal doses of radiology workers in a Shanghai hospital from 2000 to 2011. A total of 1 200 person-time were recorded. Results The annual average personal effective doses ranged from 0.22 mSv/a to 0.44 mSv/a during the selected 12 years, and the median of the average values was 0.25 mSv/a. The highest annual average effective dose was found in the nuclear medicine technologists (0.52 mSv/a). All the annual average effective doses estimated in the current study were lower than the national limits and the average radiation level of Shanghai or China. Conclusion The annual average effective doses of radiology workers in the hospital are under the limit of individual dose stipulated by natioanl standard.
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