论文部分内容阅读
目的调查某三级综合医院放射工作人员个人剂量监测情况。方法按照职业照射类别将所有人员分为四组诊断放射学、核医学、放射治疗、介入放射学,对四组人员连续五年(2011-2015年)的个人剂量监测数据进行分析。结果所有放射工作人员的年有效剂量值均未超过国家剂量限值且处于较低水平。不同职业类别的人均年有效剂量有差异,其中,介入放射学高于核医学、放射治疗和放射诊断学的差异无统计学意义。诊断放射学2013年的人均年有效剂量高于其他四年(P<0.05),核医学2014年人均年有效剂量高于2011和2012年(P<0.05),且其他组四年间人均年有效剂量差异无统计学意义。放射治疗和介入放射学的人均年有效剂量五年间差异无统计学意义。结论作为三级综合医院该医院的放射工作场所防护状况良好,放射防护管理制度规范严格,个人剂量计总体佩戴情况良好。
Objective To investigate the personal dose monitoring of radiation workers in a tertiary general hospital. Methods According to the categories of occupational exposure, all personnel were divided into four groups: diagnostic radiology, nuclear medicine, radiation therapy and interventional radiology. Individual dose monitoring data of four groups of staff for five consecutive years (2011-2015) were analyzed. Results All radiographers did not exceed the national dose limit at annual effective doses and were at a low level. There was a difference in annual effective dose per capita among different occupational categories. There was no significant difference in the interventional radiology over nuclear medicine, radiotherapy and radiodiagnosis. The annual per capita effective dose of diagnostic radiology in 2013 was higher than that in the other four years (P <0.05). The effective annual dose of nuclear medicine in 2014 was higher than that in 2011 and 2012 (P <0.05), and the average annual effective dose The difference was not statistically significant. The average annual effective dose of radiation therapy and interventional radiology had no significant difference in five years. Conclusion As a tertiary general hospital, the hospital has a good working place for radiation protection and a strict standard of radiation protection management system. The personal dosimeter is generally well worn.