Aoyama Takahiro, Koide Yutaro, Shimizu Hidetoshi, Urikura Atsushi, Kitagawa Tomoki, Hashimoto Shingo, Tachibana Hiroyuki, Kodaira Takeshi
Department of Radiation Oncology, Aichi Cancer Center, 1-1 Kanokoden, Chikusa-ku, Nagoya, Aichi, 464-8681, Japan.
Department of Radiological Technology, Radiological Diagnosis, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan.
Jpn J Radiol. 2025 Jan;43(1):109-116. doi: 10.1007/s11604-024-01650-z. Epub 2024 Sep 6.
This study aimed to analyze the domestic and international landscape of imaging diagnostics and treatments, focusing on Japan, to provide current insights for policymaking, clinical practice enhancement, and international collaboration.
Data from 1996 to 2021 were collected from Japan's Ministry of Health, Labor and Welfare database for medical device counts of CT, MRI, PET, mammography, and radiotherapy. The National Database of Health Insurance Claims and Specific Health Checkups of Japan was utilized for examination numbers. An international comparison was made with data from 41 countries using the Organization for Economic Cooperation and Development (OECD) database.
The data included a total of 108,596 CT devices, 47,233 MRI devices, 2998 PET devices, 20,641 MMG devices, and 8023 RT devices during the survey period. Upon international comparison, Japan ranked first in CT and MRI devices per million people and second in examination numbers per 1000 people. The number of PET devices per million people exceeded OECD averages; however, the number of examinations per 1000 people was below the OECD average in 2020 (Japan: 4.0, OECD: 4.9). Although Japan exceeded OECD averages in mammography device counts (Japan: 33.8, OECD: 24.5 in 2020), radiotherapy device counts were similar to OECD averages (Japan: 8.3, OECD: 7.9 in 2020).
We have analyzed the utilization of equipment in the context of diagnostic imaging and radiotherapy in Japan. Since the initial survey year, all devices have shown an upward trend. However, it is essential not only to increase the number of devices and examinations but also to address the chronic shortage of radiologists and allied health professionals. Based on the insights gained from this study, understanding the actual status of diagnostic imaging and radiation therapy equipment is critical for grasping the domestic situation and may contribute to improving the quality of healthcare in Japan.
本研究旨在分析影像诊断与治疗的国内外现状，重点关注日本，为政策制定、临床实践改进及国际合作提供当前见解。
从日本厚生劳动省数据库收集1996年至2021年CT、MRI、PET、乳腺摄影及放射治疗的医疗设备数量数据。利用日本全国健康保险理赔与特定健康检查数据库获取检查数量。使用经济合作与发展组织（OECD）数据库与41个国家的数据进行国际比较。
调查期间的数据包括总共108,596台CT设备、47,233台MRI设备、2998台PET设备、20,641台乳腺摄影设备及8023台放射治疗设备。经国际比较，日本每百万人口的CT和MRI设备数量排名第一，每千人检查数量排名第二。每百万人口的PET设备数量超过经合组织平均水平；然而，2020年每千人的检查数量低于经合组织平均水平（日本：4.0，经合组织：4.9）。尽管日本乳腺摄影设备数量超过经合组织平均水平（2020年日本：33.8，经合组织：24.5），放射治疗设备数量与经合组织平均水平相近（2020年日本：8.3，经合组织：7.9）。
我们分析了日本诊断成像和放射治疗背景下设备的使用情况。自初始调查年份以来，所有设备均呈上升趋势。然而，不仅要增加设备和检查数量，还必须解决放射科医生和相关医疗专业人员长期短缺的问题。基于本研究获得的见解，了解诊断成像和放射治疗设备的实际状况对于掌握国内情况至关重要，可能有助于提高日本的医疗保健质量。
