摘要目的 探索降低介入职业人员眼晶状体受照剂量的方法,为介入职业人员放射防护措施的改进提供数据支持.方法 选取1台配备常规辅助防护设施的介入设备和两种常见的神经介入手术类型,在辅助防护设施改造前和改造后分别测量46例和35例手术,用直读式电子剂量计读取各例介入手术中职业人员的眼晶状体受照剂量,并分析剂量变化趋势.结果 辅助防护设施改造后,全脑血管造影术、脑部栓塞术中第1术者和第2术者的左眼晶状体平均剂量分别由(9.71±10.86)和(9.51±12.34) μSv降低为(3.23 ±5.59)和(0.68±0.78) μSv、(14.83±19.13)和(14.12 ±21.76) μ Sv降低为(4.17±4.59)和(1.231.57)μSv;辅助防护设施改造前后测得的剂量差异具有统计学意义(U=-2.760和-2.467、-1.967和-2.655,P＜0.05).结论 改进介入手术中使用的辅助防护设施可以有效降低介入职业人员眼晶状体受照剂量,该方法可行性的验证为介入职业人员辐射防护效果的改善提供了新的依据.

abstractsObjective To establish a method for reducing the dose to the eye lens of interventional staff,and provide the data basis for improving radiological protection measures.Methods One piece of interventional equipment coupled with conventional auxiliary protective devices and two types of common neural interventional procedures were selected to monitor 46 and 35 procedures before and after the device modification.The doses to the eye lens of staff were measured with direct-reading dosimeters for analysis of dose trends.Results After modification of the devices,the average dose to the left eye lens decreased from (9.71 ±10.86) to (3.23 ±5.59) μSv for the first operator,from (9.51 ± 12.34) to (0.68 ± 0.78) μSv for the second in cerebral angiography;whereas the dose decreased from (14.83 ± 19.13) to (4.17±4.59) for the first operator and from (14.12±21.76) to (1.23 ±1.57)μSv for the second in embolization procedure,respectively.The left eye lens doses measured before and after the modification showed significant difference (U =-2.760,-2.467,-1.967,-2.655,P ＜0.05).Conclusions The modification of the auxiliary radiological protective devices may effectively reduce the dose to the eye lens dose.This method was shown to be feasible for the improvement of radiological protection of interventional staff.