2022 Fiscal Year Final Research Report
Construction of an automatic diagnosis system for the radiation cataract of medical professionals and practice of radiation protection education
| Project/Area Number |
20K10366
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 58010:Medical management and medical sociology-related
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| Research Institution | University of Occupational and Environmental Health, Japan |
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Principal Investigator |
Nagata Tatsuo 産業医科大学, 医学部, 准教授 (80389460)
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| Co-Investigator(Kenkyū-buntansha) |
掛田 伸吾 弘前大学, 医学研究科, 教授 (30352313)
盛武 敬 国立研究開発法人量子科学技術研究開発機構, 放射線医学研究所 放射線規制科学研究部, 部長 (50450432)
村上 誠一 純真学園大学, 放射線技術科学科, 教授 (00870437)
永元 啓介 産業医科大学, 大学病院, 診療放射線技師 (00964909)
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | 医療従事者の放射線被曝 / 放射線白内障 / 水晶体徹照カメラ / 放射線防護 / 未散瞳水晶体検診 / 水晶体AI自動診断 |
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| Outline of Final Research Achievements |
We performed lens examinations for ionizing radiation using KMU retroillumination camera without mydriasis not so to interfere with driving and work on the examination day. The results showed a positive predictive value of 90.5%, indicating its usefulness as a lens check for ionizing radiation screening. Although none of the patients exceeded the personal radiation dose limit, 5.3% of the younger patients (<50 years of age) had multiple vacuoles, which are considered early radiation cataract findings. The screening was a reminder to radiation workers to be aware of radiation and the importance of radiation protection.
Though deep learning has progressed to the stage of practical use for automatic lens judgment using mydriatic images, the number of cases analyzed using unmydriatic images is still small, and we plan to continue this analysis in the future.
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| Free Research Field |
産業眼科学
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| Academic Significance and Societal Importance of the Research Achievements |
医療従事者の放射線被曝について就業期間に症状がでることは少なく軽視されてきたが、放射線の感度が高いと言われている水晶体検診を精密に行うと、軽度ではあったが、若年者において約５％の有所見者が存在した。時間的、身体的負担により散瞳による水晶体精密検査を行うのは無理があるが、未散瞳徹照画像による検診はそれらが少なく、電離放射線健康診断における水晶体検診に有用で、今後標準化するべきであると考えられた。
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