2007-2017年某医院放射工作人员个人剂量结果分析

The results analysis of individual monitoring status from occupational exposure in a hospital from 2007 to 2017

目的分析某医院2007-2017年不同工种的放射工作人员职业性外照射个人剂量水平,为保障放射工作人员身体健康、医院行政部门的放射管理工作提供依据。方法基于国家相关法律法规及卫生标准,采用热释光法测量,评价从事诊断放射学、介入放射学、放射治疗、其他医学类的放射工作人员的个人剂量监测结果,用SPSS22.0统计分析。结果该医院2007-2017年共监测666人次,人均年有效剂量为0.62 mSv·a-1,集体剂量为34.51 man·m Sv。2010年的人均年有效剂量最高,为1.08 mSv·a-1;2011年大剂量值占比最高,为18.87%。介入放射工作人员大剂量占全部工作人员的53.49%。监测介入放射学工作人员最多,共263人次,且人均年有效剂量的平均值最高,为0.82 mSv·a-1,不同工种差异有统计学意义(P <0.05)。结论该医院放射工作人员的受照剂量满足国家职业接触限值的要求,放射工作人员的受照剂量较低且逐年下降。介入放射学仍是高风险辐射岗位,且个人防护意识有待提高。放射技师及护理人员岗位流动性大,需加强此类人群的放射防护培训。

Objective To analyze the individual dose level of radiation workers of different types of occupational external exposure in a hospital from 2007 to 2017,to ensure the health of radiological workers and provides a reliable basis for the radiology management work of hospital administrative departments.Methods Based on the relevant national laws and regulations and health standards,the results of personal dose monitoring were evaluated by thermoluminescence measurement,and SPSS22.0 statistics analysis for radiology,interventional radiology,radiotherapy,and other medical personnel.Results A total of 666 man-time were monitored,with an annual effective dose per capita of 0.62 mSv·a^-1.The collective dose were 34.51 man•mSv.The highest annual effective dose per capita in 2010 was 1.08 mSv·a^-1. In 2011,largedose values accounted for the highest proportion,reaching 18.9%;the large doses of intervention staff accounted for 53.5%of the total staff.The maximum number of monitoring interventional radiology workers was 263 man-time,and the average annual effective dose per capita was the highest,0.82 mSv·a^-1,with statistically significant differences in different types of work(P<0.05).Conclusion The exposure dose of radiation workers in the hospital meets the requirements of the national occupational exposure limit,and the exposure dose of radiation workers was low and decreasing year by year.The interventional radiology was still a high-risk radiation position,and the personal protective awareness needs to be improved.Radiographers and nursing staff were highly mobile,so it is necessary to strengthen radiation protection training for such people.