【摘要】 目的测量与评价内镜逆行胰胆管造影术(ERCP)时手术者站立区域辐射场剂量的分布特点,为ERCP医护人员的防护提供辐射剂量学数据。方法将ERCP手术者曝光时经常停留的区域分成40个测试点,每个测量点按照高度不同测量五个数据,使用X、γ辐射剂量率仪进行周围剂量当量率测量。结果手术者站立区域的周围剂量当量率为2. 3～386. 0μSv/h。总体趋势而言,离照射野中心越近的位置其周围剂量当量率越高;对于同一位置,相当于头部,胸部,腹部及下肢高度的周围剂量当量率较为接近,足部的周围剂量当量率略低一些,但也有例外。结论 ERCP手术者站立区域的高周围剂量当量率主要集中于在手术者经常站立的区域,因此必须采取有效的防护措施,保障ERCP手术者的健康与安全。更多还原

【Abstract】 Objective To measure and evaluate the radiation dose distribution characteristics in the standing areas of the operator during endoscopic retrograde cholangiopancreatography( ERCP),and to provide radiation dose data for the protection of ERCP endoscopist. Methods The areas that ERCP operators often stay in during exposure were divided into 40 test points.Five data were measured at each test point according to different altitudes. The ambient dose equivalent rate was measured by X and gamma radiation dose rate meter. Results The ambient dose equivalent rate of the operator’s standing area was 2. 3 ～386. 0 μSv/h. Generally,the closer to the center of the irradiation field,the higher the ambient dose equivalent rate around it. For the same position,the dose equivalent rate around the head,chest,abdomen and lower limb height is close,while the dose equivalent rate around the foot is slightly lower,but there were some exceptions. Conclusion The higher ambient dose rates in the standing area of ERCP surgeons are mainly obtained in the areas where the operators often stand. Therefore,effective protective measures must be taken to ensure the health and safety of the ERCP surgeons.更多还原