{"title":"[Evaluation of Appropriate Treatment Infrastructure for Radionuclide Therapy Through Discrete Event Simulation].","authors":"Takashi Mizowaki, Makoto Hosono, Hiroji Uemura, Masatoshi Eto, Mototsugu Oya, Hideaki Miyake, Masafumi Ikeda, Ayako Kanegasaki, Shunsuke Sakuragi, Yuhei Oida, Seigo Kinuya","doi":"10.18893/kakuigaku.oa.2503","DOIUrl":"https://doi.org/10.18893/kakuigaku.oa.2503","url":null,"abstract":"<p><strong>Purpose: </strong>Radionuclide therapy often involve long waiting periods due to limited numbers of radioisotope therapy rooms and special measures rooms, and strict regulations. The purpose of this study was to estimate the waiting period for radionuclide therapy, considering the increased utilization of nuclear medicine and greater demand due to new drugs. The study also examined possible factors that may limit the treatment provision system and investigate appropriate treatment environments that could shorten the waiting period.</p><p><strong>Method: </strong>We developed a discrete event simulation, using three prefectures as a model, to predict the number of patients with a long waiting period and determine the effectiveness of environmental measures designed to shorten the waiting period. The model took considered the demand for radionuclide therapy and medical resources, such as the number of treatment beds, as input values.</p><p><strong>Results: </strong>The simulation predicted that, within 4 years after the introduction of [<sup>177</sup>Lu]Lu-PSMA-617, the number of patients waiting >180 days for treatment would increase significantly in all three prefectures. The limited number of beds was the leading cause of the long waiting period. However, just increasing the number of beds was ineffective for reducing the waiting period in some facilities due to regulatory factors, and measures to improve the drainage capacity were also necessary.</p><p><strong>Conclusion: </strong>The number of patients with a long waiting period is expected to increase significantly due to the rapid increase in demand for radionuclide therapy. A combination of measures, including increasing the number of beds, improving drainage capacity, and better utilization of available medical resources through interfacility cooperation, are factors that need urgent attention to reduce the waiting time for radionuclide therapy.</p>","PeriodicalId":94120,"journal":{"name":"Kaku igaku. The Japanese journal of nuclear medicine","volume":"62 1","pages":"59-70"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144983740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[The 46th Report on Survey of the Adverse Reaction to Radiopharmaceuticals (The 49th Survey in 2023)].","authors":"Hidehiko Okazawa, Tomoya Uehara, Daiki Kayano, Ichiei Kuji, Tatsuya Higashi, Mana Yoshimura","doi":"10.18893/kakuigaku.rp.2531","DOIUrl":"10.18893/kakuigaku.rp.2531","url":null,"abstract":"<p><p>This survey was performed in order to investigate the incidence of adverse reactions to radiopharmaceuticals in FY2023 in Japan. It was based on responses to questionnaires sent to nuclear medicine institutions. Replies were obtained from 971 institutions out of 1,181 to which the questionnaire had been sent. A total of 884,272 radiopharmaceutical administrations were reported. Fifteen cases of adverse reactions were reported. The incidence of adverse reactions per 100,000 cases was 1.7. No case of defective products was reported.</p>","PeriodicalId":94120,"journal":{"name":"Kaku igaku. The Japanese journal of nuclear medicine","volume":"62 1","pages":"7-17"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143412125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"","authors":"","doi":"10.18893/kakuigaku.arm.2535","DOIUrl":"https://doi.org/10.18893/kakuigaku.arm.2535","url":null,"abstract":"","PeriodicalId":94120,"journal":{"name":"Kaku igaku. The Japanese journal of nuclear medicine","volume":"62 1","pages":"45-46"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144628364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"","authors":"","doi":"10.18893/kakuigaku.rgr.2532","DOIUrl":"https://doi.org/10.18893/kakuigaku.rgr.2532","url":null,"abstract":"","PeriodicalId":94120,"journal":{"name":"Kaku igaku. The Japanese journal of nuclear medicine","volume":"62 1","pages":"19-21"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143702508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"","authors":"","doi":"10.18893/kakuigaku.arm.2534","DOIUrl":"https://doi.org/10.18893/kakuigaku.arm.2534","url":null,"abstract":"","PeriodicalId":94120,"journal":{"name":"Kaku igaku. The Japanese journal of nuclear medicine","volume":"62 1","pages":"39-43"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144510118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"","authors":"","doi":"10.18893/kakuigaku.arm.2533","DOIUrl":"https://doi.org/10.18893/kakuigaku.arm.2533","url":null,"abstract":"","PeriodicalId":94120,"journal":{"name":"Kaku igaku. The Japanese journal of nuclear medicine","volume":"62 1","pages":"33-38"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144056862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"","authors":"","doi":"10.18893/kakuigaku.arm.2538","DOIUrl":"https://doi.org/10.18893/kakuigaku.arm.2538","url":null,"abstract":"","PeriodicalId":94120,"journal":{"name":"Kaku igaku. The Japanese journal of nuclear medicine","volume":"62 1","pages":"89-95"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145208846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[New Investment for Theranostics in Europe].","authors":"Kaori Nomura, Kohshin Washiyama, Noboru Oriuchi","doi":"10.18893/kakuigaku.ra.2502","DOIUrl":"10.18893/kakuigaku.ra.2502","url":null,"abstract":"<p><p>The Japanese government has shown increasing expectations for the medical application of radioactive isotopes (RIs), as reflected in the 2024 Basic Policy on Economic and Fiscal Management and Reform. Additionally, the Fukushima Instutute for Research, Education and Innovation (F-REI) has launched RI-based diagnostic and therapeutic drug development projects, and the Ministry of Health, Labour and Welfare has proposed a draft guideline for clinical and non-clinical studies of radiopharmaceuticals for therapeutic use. Meanwhile, in Europe, three large-scale theranostics projects began in October 2024. These projects represent the first public-private research initiatives in RI drug discovery, with significant financial support of 60 million euros from the Horizon Europe project of the European Commission and the related industries. In terms of drug development, the Innovative Health Initiative (IHI) plays a key role in funding medical research projects as part of Horizon Europe. It designated the Thera4Care, Accelerate.EU, and ILLUMINATE projects, focusing on theranostics. Thera4Care aims to establish ecosystem for theranostics and expand its use across Europe. Accelerate.EU aims to develop targeted alpha therapy using astatine-211 (<sup>211</sup>At) for pancreatic, breast, and brain cancers, establishing a sustainable production network. The project plans to conduct phase1 clinical trials by 2028. ILLUMINATE focuses on optimizing lutetium-177 (<sup>177</sup>Lu)-based therapies for prostate cancer while improving isotope production and supply chains. Japan has RI research initiatives sponsored by F-REI, but lacks strong industry participation and financial contribution mechanisms seen in Europe. It is desirable for researchers to inform companies and related organizations about commissioned projects, and for researchers themselves to improve the environment for joint research. The advancement of theranostics using RIs in Japan requires industry engagement, knowledge dissemination, and workforce training to facilitate clinical applications and foster international collaboration.</p>","PeriodicalId":94120,"journal":{"name":"Kaku igaku. The Japanese journal of nuclear medicine","volume":"62 1","pages":"23-31"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143775078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"","authors":"","doi":"10.18893/kakuigaku.arm.2537","DOIUrl":"10.18893/kakuigaku.arm.2537","url":null,"abstract":"","PeriodicalId":94120,"journal":{"name":"Kaku igaku. The Japanese journal of nuclear medicine","volume":"62 1","pages":"55-57"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144823555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"","authors":"","doi":"10.18893/kakuigaku.arm.2539","DOIUrl":"https://doi.org/10.18893/kakuigaku.arm.2539","url":null,"abstract":"","PeriodicalId":94120,"journal":{"name":"Kaku igaku. The Japanese journal of nuclear medicine","volume":"62 1","pages":"97-103"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145208802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}