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目的了解医疗系统不同工种放射工作人员的外照射水平。方法采用热释光剂量测量方法对河北省某医疗机构放射工作人员进行外照射个人剂量水平监测,共监测90人。结果 2012年人均年有效剂量为0.69 m Sv/年,不同工种人均年有效剂量由高到低依次为介入0.80 m Sv/年、核医学0.77 m Sv/年、放射治疗0.62 m Sv/年、放射诊断学0.60 m Sv/年。不同工种间人均年有效剂量比较差异有统计学意义(F=2.74,P<0.05)。结论该医疗机构放射工作人员的年均有效剂量低于国家标准限值,介入放射学和核医学工作人员应作为放射防护的重点人群。
Objective To understand the level of external exposure of radiographers working in different types of medical systems. Methods The dosage of thermoluminescence was used to monitor the personal exposure of radiation workers in a medical institution in Hebei province. A total of 90 individuals were monitored. Results The annual effective dose per capita was 0.69 m Sv / year in 2012, and the annual average effective doses of different types of workers were 0.80 m Sv / year, 0.77 m Sv / year for nuclear medicine, 0.62 m Sv / year for radiotherapy and 0.62 m Sv / year for radiotherapy Diagnostics 0.60 m Sv / year. The average annual effective dose of different types of workers was significantly different (F = 2.74, P <0.05). Conclusion The annual average effective dose of radiation workers in this medical institution is lower than the national standard limit. Interventional radiology and nuclear medicine staff should be the key population for radiation protection.