2022 Fiscal Year Final Research Report
Study on multi-point measurement of local irradiation dose during radiotherapy using synthetic ruby
| Project/Area Number |
19K12327
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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 63020:Radiation influence-related
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| Research Institution | International University of Health and Welfare |
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Principal Investigator |
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| Project Period (FY) |
2019-04-01 – 2023-03-31
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| Keywords | radiotherapy / synthetic ruby / real-time / dosimetry / multi-point measurements |
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| Outline of Final Research Achievements |
The goal of this research was to develop a dosimeter that can measure radiation dose at multiple points simultaneously in real time, and to obtain basic characteristics. We found that one of the problems with the dosimeter, the discrepancy from the reference dosimeter was due to the effect of Cherenkov light from high-energy X-rays. We summarized these results and reported them to RPTE. In addition, we assembled a system using MPPC modules for multi-point measurements and conducted various experiments on simultaneous multi-point measurements. As a result, meaningful data acquisition was possible, suggesting the usefulness of the developed system. Although we were able to confirm almost all the content that needed to be verified during the study period, several future challenges were also identified.
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| Free Research Field |
radiological technology
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| Academic Significance and Societal Importance of the Research Achievements |
放射線治療時のトラブルは多数報告されているが、明確な対策はなされていない。トラブルの多くは投与線量の間違いに関する報告であるが、対策には照射中にリアルタイムで局所の線量を測定できるシステムが必要であり、我々はセンサーとして人工ルビーを使用したリアルタイムで多数点同時測定が可能な線量計の開発を行っている。本研究期間内において開発した線量計の基礎特性や問題点を把握し、とても有意義なデータが取得できた。
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