2021 Fiscal Year Final Research Report
Real time Compton imaging for BNCT
| Project/Area Number |
19K17261
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 52040:Radiological sciences-related
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| Research Institution | Gunma University |
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Principal Investigator |
Sakai Makoto 群馬大学, 重粒子線医学推進機構, 助教 (70727338)
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| Project Period (FY) |
2019-04-01 – 2022-03-31
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| Keywords | Compton camera / BNCT / prompt gamma-ray / AmBe / neutron |
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| Outline of Final Research Achievements |
Using a Monte Carlo simulation to simulate the measurement of the BNCT reaction by a Compton camera, we were able to measure the prompt γ-rays of 480 keV. In an experimental measurement, an AmBe source was used to create a thermal neutron field in which the boron and Compton camera were placed. In the design, optimization was performed using Monte Carlo simulations.
However, 480 keV γ-rays due to the BNCT reaction were measured even in the absence of boron. As a result of the investigation, it was found that the heat insulating materia of the Compton camera contained boron. Therefore, the insulation was made of boron-free material and retrofitted.
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| Free Research Field |
医学物理学
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| Academic Significance and Societal Importance of the Research Achievements |
ホウ素中性子補足療法（BNCT）は中性子を用いた次世代のがん治療法である。治療中に生じる即発γ線を用いた線量評価手法が提案されているが、即発γ線はエネルギーが高く、従来のγカメラでは十分な成果が得られていない。そこで我々が医療用に開発を進めているコンプトンカメラを応用したリアルタイム線量評価システムを開発することを目的としている。本研究ではコンプトンカメラでの測定可能性を示すことができ、実測実験に向けた準備を整えることができた。
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