广西大中型医院DR机房辐射环境监测与评价

Radiation environment monitoring and evaluation of DR room in Guangxi large and medium hospitals

目的了解广西区内大中型医院DR机房的防护现状,评价DR运行过程中对周围环境、职业人员、公众成员产生的辐射影响,为DR项目的辐射安全管理提供依据,为相关防护标准的制定提供数据支持。方法按国家有关标准与监测规范,对DR设备机房及周围环境规范合理布点,利用X-γ剂量率仪对广西区内54家大中型医院在用的169台DR设备机房开展辐射环境监测,根据监测数据进行评价。结果169台DR设备机房屏蔽体外0.3 m处的周围剂量当量率H*(10)均小于2.5μSv/h。结论广西大中型医院DR机房的屏蔽能力能够满足辐射防护要求,辐射工作人员与公众成员接受的年有效剂量符合相关标准的要求。

Objective To understand the current situation of DR room protection in large and medium-hospitals in Guangxi,evaluate the radiation impact on the surrounding environment,professional staff and public members during DR operation,provide basis for radiation safety management of DR project,and provide support for the establishment of radiation monitoring standards.Methods According to the relevant national standards and monitoring specifications,the reasonable distribution of DR equipment room and surrounding environment is standardized.The radiation environment monitoring of 169 DR equipment rooms in 54 large and medium hospitals in Guangxi is carried out by using x-γdose rate instrument,and monitoring data were analysed to evaluate shielding capacity of all DR room.Results The ambient dose equivalent H^*(10)of 169 DR equipment rooms at 0.3 m outside the shield is less than 2.5μSv/h.Conclusion The shielding capacity of DR room in large and medium-sized hospitals in Guangxi can meet the radiation protection requirements,and the annual effective dose accepted by radiation workers and members of the public meets the requirements of relevant standards.