摘要
目的建立介入职业人员手部皮肤受照剂量的测量方法,对常规单X射线管和较新的双X射线管介入设备下介入职业人员手部受照剂量进行比较研究,为介入职业人员手部剂量监控和放射防护的改进提供科学依据。方法选用热释光剂量计(TLD),并进行皮肤个人剂量当量H_p(0.07)刻度。选择2台单X射线管和3台双X射线管介入设备,测量4种介入手术类型的231人次介入职业人员手部皮肤剂量。对单X射线管和双X射线管介入设备下测得的介入职业人员手部剂量统计比较。结果经手部皮肤个人剂量当量H_p(0.07)刻度,TLD线性拟合度较好(R^2=0.99996)。单X射线管和双X射线管介入设备的介入职业人员手部皮肤受照剂量均表现为治疗类手术高于造影类手术,手部受照剂量和曝光时间正相关。以神经系统血管造影术为例,同类手术中,双X射线管介入设备较单X射线管介入设备曝光时间短(U=-4.307,P<0.05),但介入职业人员手部皮肤受照剂量高。结论双X射线管介入设备与单X射线管介入设备相比,提高了手术效率,但也增加了介入职业人员的受照剂量。应加强介入职业人员的辐射防护意识和措施,保证职业人员的健康。
Objective To establish the method for extremity dose measuring for interventional staff, and compare the ex- tremity dose to interventional staff on traditional interventional devices with single X - ray tube to that on the new devices with double tubes, and thus support the monitoring of the doses and the improvement of the radiological protection. Methods Thethermoluminescence dosimeters （TLD） were calibrated with personal dose equivalent Hp （ 0.07 ）. The extremity doses of 231 person - time from 4 kinds of interventional procedures were measured on 2 interventional devices with single X - ray tube and 3 devices with double X - ray tubes. The doses obtained on different kinds of interventional devices were analyzed. Results The TLD shows good linear fitting with Hp （0.07） calibration. The extremity doses, which in the therapeutic procedures were higher than those in the graphic ones, perform positively relevance to the exposure time. Comparing the same kind of interven- tional procedures on devices with double and single X - ray tubes, the former shows shorter exposure time with higher extremity dose to interventional staff than the latter. Conclusion The interventional devices with double X - ray tubes significantly im- prove the et-ciency of the interventional procedures while increase the dose to interventional staff. The radiological protection should be strengthened to protect the health of the interventional staff.
出处
《中国辐射卫生》
2017年第3期257-260,共4页
Chinese Journal of Radiological Health
基金
国家科技支撑计划项目(2014BAI12B04)
