2008年天津市部分介入放射工作人员个人剂量的监测与评价

Monitoring and Evaluation on Individual Dose of Some Medical Workers Engaged in Interventional Radiology in Tianjin City in 2008

目的了解天津市从事介入放射医疗工作人员职业性外照射的个人剂量情况。方法选取天津市4所医院的放射工作者72人,采用热释光监测方法,结合相关标准进行评价分析。结果4所医院的介入放射工作人员中,人均年剂量分别为2.08、3.73、0.65和0.64mSv。全体人均年剂量为2.30mSv。其中61人低于5mSv,占总数的84.7%;9人高于5mSv而低于10mSv,占总数的12.5%;2人高于10mSv而低于20mSv,占总数的2.8%。全部72人均不超过20mSv。结论部分放射工作人员的个人剂量监测结果超过了标准规定的限值。需要加强对天津市的介入放射学工作人员的放射防护管理,降低个人剂量水平。

[Objective]To understand the individual dose of occupational external exposure of medical workers engaged in interventional radiology in Tianjin City.[Methods]Thermoluminescence monitoring methods combined with related standard were used to evaluate and analyze 72 radiation workers in 4 hospitals of Tianjin City.[Results]Of the investigated 4 hospitals,annual dose equivalent per capita was 2.08,3.73,0.65 and 0.64 mSv,respectively.Annual dose equivalent per capita of all workers was 2.30 mSv;among which that of 61 workers （84.7%） was lower than 5 mSv;that of 9 （12.5%） was higher than 5 mSv but lower than 10 mSv;2 （2.8%） were higher than 10 mSv but lower than 20 mSv.No one＇s annual dose equivalent exceeded 20 mSv of all 72 workers.[Conclusion]Some radiation worker＇s individual dose exceed the standard limit.It is necessary to strengthen the radiation protection management among radiation workers to reduce the levels of individual dose.