Osawa Mitsuharu, Nagata Akinori, Saijo Takaya, Yamada Tsuyoshi, Sugimoto Naruto, Tokudome Akira, Suzuki Kosuke, Sakamoto Hajime
Department of Radiology, Aichi Medical University Hospital.
Central Department of Radiology, Tosei General Hospital.
Nihon Hoshasen Gijutsu Gakkai Zasshi. 2024 Jan 20;80(1):66-76. doi: 10.6009/jjrt.2024-1342. Epub 2023 Nov 15.
National diagnostic reference levels in Japan 2020 (DRLs 2020) have been published. In the field of angiography, in addition to the fluoroscopic dose rate, incident air kerma at the patient entrance reference point displayed on the equipment (K: mGy) and air kerma-area product displayed on the equipment (P: Gycm) were set. A questionnaire survey was conducted at each facility in the Tokai region to confirm the status of medical radiation dose control in the region.
A questionnaire survey was conducted at each facility in the Tokai region. The items were fluoroscopic dose rate in each area (head and neck, cardiac, chest and abdomen, and limbs), DA and DSA dose rates, and dose area product meter (K, P) for the main procedures in each area.
The median values in this study were lower than those in the DRLs 2020, indicating that appropriate dose control is being implemented in the Tokai region. The trends of fluoroscopic and radiographic dose rates were different in each area, and there was some variation among the facilities.
We believe that the incorporation of fluoroscopic and radiographic dose rates by area into the DRLs will facilitate more appropriate dose control at each facility in the future.
日本2020年国家诊断参考水平（DRLs 2020）已发布。在血管造影领域，除了荧光透视剂量率外，还设定了设备上显示的患者入口参考点处的空气比释动能（K：毫戈瑞）以及设备上显示的空气比释动能面积乘积（P：戈瑞·厘米）。在东海地区的每个机构进行了问卷调查，以确认该地区医疗辐射剂量控制的状况。
在东海地区的每个机构进行了问卷调查。调查项目包括各区域（头颈部、心脏、胸部和腹部以及四肢）的荧光透视剂量率、数字减影血管造影（DA）和数字减影血管造影（DSA）剂量率，以及各区域主要检查项目的剂量面积乘积仪（K、P）。
本研究中的中位数低于DRLs 2020中的数值，表明东海地区正在实施适当的剂量控制。各区域荧光透视和放射剂量率的趋势不同，各机构之间也存在一些差异。
我们认为将按区域划分的荧光透视和放射剂量率纳入DRLs将有助于未来各机构进行更适当的剂量控制。
