Sakiyama Koshi, Higuchi Takahito, Nakai Yuichi, Takahashi Toshiyuki, Kato Kyoichi
Department of Radiology, Showa University Northern Yokohama Hospital.
Showa University Graduate School of Health Sciences.
Nihon Hoshasen Gijutsu Gakkai Zasshi. 2023 Feb 20;79(2):160-165. doi: 10.6009/jjrt.2023-1315. Epub 2023 Jan 17.
DRLs 2020 has been revised, and K and P for each procedure have been set for IVR along with the reference fluoroscopic dose rate. The total dose of IVR includes fluoroscopic and digital acquisition (DA) doses, but in actual clinical practice, the ratio varies greatly depending on the procedure (diagnosis/treatment purpose and procedure content), and there are not many detailed data on the ratio. Therefore, we evaluated previous efforts that optimized radiation protection through examining dose for each procedure and the ratio of fluoroscopic and DA doses to total dose, and reviewing protocols. Since the ratio of fluoroscopy and DA dose differs depending on the procedure, it was suggested that the radiation dose exposed to patients can be optimized by sharing the dose information with physicians and constructing a protocol while considering the image quality for each procedure.
《2020年剂量参考水平》已修订，针对介入放射学（IVR）的每个操作设定了K值和P值以及参考荧光透视剂量率。IVR的总剂量包括荧光透视剂量和数字采集（DA）剂量，但在实际临床实践中，该比例因操作（诊断/治疗目的和操作内容）而异，且关于该比例的详细数据不多。因此，我们通过检查每个操作的剂量、荧光透视剂量与DA剂量在总剂量中的比例以及审查方案，评估了以往优化辐射防护的工作。由于荧光透视和DA剂量的比例因操作而异，有人建议，通过与医生共享剂量信息并在考虑每个操作的图像质量的同时制定方案，可以优化患者所接受的辐射剂量。
