Physician-received scatter radiation with angiography systems used for interventional radiology: comparison among many X-ray systems
Physician-received scatter radiation with angiography systems used for interventional radiology: comparison among many X-ray systems
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DOI：
10.1093/rpd/ncr312
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发表时间：
2012-05-01
影响因子：
1
通讯作者：
Zuguchi, Masayuki
中科院分区：
文献类型：
--
作者：
Chida, Koichi;Morishima, Yoshiaki;Zuguchi, Masayuki
放射防护对介入放射科医师来说是非常重要的。目前的IR X射线系统倾向于使用平板探测器（FPD）而不是图像增强器（II）。本研究的目的是检验FPD系统和II系统之间的医生接收散射辐射（PRSR）没有差异的假设。本研究检查了15个心脏导管插入实验室的20台X射线系统（11台使用FPD，9台使用II）。使用体模和固态探测器电子袖珍剂量计在20个X射线系统中比较了数字电影血管造影和荧光透视的PRSR。对于电影血管造影术，最大PRSR超过最小PRSR约12倍，对于荧光透视术，最大PRSR超过最小PRSR约9倍。对于荧光透视和数字电影血管造影，PRSR与入射表面剂量具有统计学显著正相关性（荧光透视，r0.87;电影血管造影，r0.86）。在数字电影血管造影术或荧光透视检查期间，FPD和II的平均PRSR之间没有统计学显著差异。在评价的X射线摄影系统中，PRSR范围很广。PRSR与用于IR的20个X射线单位中的体模的入射表面剂量具有良好的相关性。因此，降低患者的剂量也将降低工作人员的剂量。
Radiation protection for interventional radiology (IR) physicians is very important. Current IR X-ray systems tend to use flat-panel detectors (FPDs) rather than image intensifiers (IIs). The purpose of this study is to test the hypothesis that there is no difference in physician-received scatter radiation (PRSR) between FPD systems and II systems. This study examined 20 X-ray systems in 15 cardiac catheterisation laboratories (11 used a FPD and 9 used an II). The PRSR with digital cineangiography and fluoroscopy were compared among the 20 X-ray systems using a phantom and a solid-state-detector electronic pocket dosemeter. The maximum PRSR exceeded the minimum PRSR by approximate to 12-fold for cineangiography and approximate to 9-fold for fluoroscopy. For both fluoroscopy and digital cineangiography, the PRSR had a statistically significant positive correlation with the entrance surface dose (fluoroscopy, r0.87; cineangiography, r0.86). There was no statistically significant difference between the average PRSR of FPDs and IIs during either digital cineangiography or fluoroscopy. There is a wide range of PRSR among the radiography systems evaluated. The PRSR correlated well with the entrance surface dose of the phantom in 20 X-ray units used for IR. Hence, decreasing the dose to the patient will also decrease the dose to staff.