Asada Yasuki, Ono Koji, Kondo Yuya, Sugita Kazuma, Ichikawa Takuma, Shibata Hideki
Faculty of Radiological Technology, School of Medical Science, Fujita Health University, Toyoake, Japan.
Department of Radiological Technology, Ichinomiya Municipal Hospital, Ichinomiya, Japan.
Radiat Prot Dosimetry. 2019 Dec 31;187(3):338-344. doi: 10.1093/rpd/ncz172.
The present study aimed to propose local diagnostic reference levels (DRLs) formulated by calculating entrance surface doses for general radiography at 20 facilities of Aichi prefecture in Japan, by comparing these values with DRLs established in Japan in 2015 (DRLs 2015) and assessing radiation dose differences among facilities. X-ray outputs (half-value layer and air kerma) of each facility were measured with a non-invasive type of detector. The results were employed to formulate local DRLs based on the 75th percentiles of dose distributions. These local DRLs were lower than the DRLs 2015 for all examinations. If proposed local DRLs from other 46 prefectures can be collected, this paper can be used to benefit the next effort to draft better DRL for Japan.
本研究旨在通过计算日本爱知县20家医疗机构普通X线摄影的入射体表剂量，制定当地的诊断参考水平（DRLs），将这些值与2015年日本制定的DRLs（DRLs 2015）进行比较，并评估各医疗机构之间的辐射剂量差异。使用非侵入式探测器测量每个医疗机构的X射线输出（半值层和空气比释动能）。结果用于根据剂量分布的第75百分位数制定当地的DRLs。所有检查的这些当地DRLs均低于DRLs 2015。如果能收集到其他46个县提出的当地DRLs，本文可用于为日本制定更好的DRLs的下一步工作提供帮助。
