Choi Moon Hyung, Choi Byung Gil, Jung Seung Eun, Byun Jae Young
Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea .
J Korean Med Sci. 2016 Feb;31 Suppl 1(Suppl 1):S55-8. doi: 10.3346/jkms.2016.31.S1.S55. Epub 2016 Jan 28.
Fluoroscopy guidance is useful to confirm anatomical landmark and needle location for spine intervention; however, it can lead to radiation exposure in patients, physicians, and medical staff. Physicians who used fluoroscopy should be cognizant of radiation exposure and intend to minimize radiation dose. We retrospectively reviewed three lumbar spine intervention procedures (nerve root block, medial branch block, and facet joint block) at our institution between June and December, 2014. We performed 268 procedures on 220 patients and found significant difference in radiation dose between two groups classified by performing physicians. The physician who controlled the fluoroscopy unit directly used significantly shorter fluoroscopy (6 seconds) that resulted in a smaller radiation dose (dose area product [DAP] 0.59 Gy∙cm(2)) than the physician supervising the radiographer controlling the fluoroscopy unit (72 seconds, DAP 5.31 Gy∙cm(2), P < 0.001). The analysis indicates that the difference in fluoroscopy time depends on whether a physician or a radiographer controls the fluoroscopy unit.
透视引导对于脊柱介入操作中确认解剖标志和穿刺针位置很有用；然而，它会导致患者、医生及医护人员受到辐射暴露。使用透视的医生应意识到辐射暴露问题，并致力于将辐射剂量降至最低。我们回顾性分析了2014年6月至12月间在我院进行的三项腰椎介入操作（神经根阻滞、内侧支阻滞和小关节阻滞）。我们对220例患者实施了268例操作，并发现根据操作医生分组的两组之间辐射剂量存在显著差异。直接控制透视设备的医生使用的透视时间明显更短（6秒），这导致的辐射剂量（剂量面积乘积[DAP]为0.59 Gy∙cm²）比监督控制透视设备的放射技师的医生（72秒，DAP为5.31 Gy∙cm²，P < 0.001）更小。分析表明，透视时间的差异取决于控制透视设备的是医生还是放射技师。
