Ponzio Danielle Y, Lonner Jess H
Rothman Institute/Department of Orthopaedic Surgery, Thomas Jefferson University, Philadelphia, Pennsylvania.
J Arthroplasty. 2015 Jun;30(6):964-7. doi: 10.1016/j.arth.2014.10.039. Epub 2014 Nov 11.
Robotic-assisted knee arthroplasty with some systems requires the use of computed tomography (CT) scans. The associated radiation dose has not been studied. The effective dose (ED, mSv) of radiation was calculated for 236 preoperative CT scans used for planning of robotic assisted surgery. The mean ED was 4.8±3.0 mSv. There was a 3-fold difference in ED between institutions. One or more additional CT scans were obtained in 25% of patients, amounting to a cumulative ED per patient up to 103 mSv. Preoperative CT is a disadvantage of some robotic-assisted knee arthroplasty systems due to additional cost and radiation exposure. Newer image-free robotic technologies are an alternative to CT-dependent surgery if accuracy and safety are not compromised.
某些系统的机器人辅助膝关节置换术需要使用计算机断层扫描（CT）。相关的辐射剂量尚未得到研究。对用于机器人辅助手术规划的236例术前CT扫描计算了辐射的有效剂量（ED，毫希沃特）。平均有效剂量为4.8±3.0毫希沃特。不同机构之间的有效剂量存在3倍差异。25%的患者进行了一次或多次额外的CT扫描，每位患者的累积有效剂量高达103毫希沃特。由于额外的成本和辐射暴露，术前CT是一些机器人辅助膝关节置换术系统的一个缺点。如果不影响准确性和安全性，更新的无图像机器人技术是依赖CT手术的一种替代方案。
