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논문 기본 정보

자료유형
학술저널
저자정보
구영모 (한양대학교) 정재린 (국립암센터) 김찬형 (한양대학교)
저널정보
한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제54권 제9호
발행연도
2022.9
수록면
3,422 - 3,428 (7page)
DOI
10.1016/j.net.2022.04.019

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초록· 키워드

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The prompt gamma imaging (PGI) technique is considered as one of the most promising approaches to estimate the range of proton beam in the patient and unlock the full potential of proton therapy. In the PGI technique, a dedicated algorithm is required to estimate the range of the proton beam from the prompt gamma (PG) distribution acquired by a PGI system. In the present study, a new range estimation algorithm was developed for a multi-slit prompt-gamma camera, one of PGI systems, to estimate the range of proton beam with high accuracy. The performance of the developed algorithm was evaluated by Monte Carlo simulations for various beam/phantom combinations. Our results generally show that the developed algorithm is very robust, showing very high accuracy and precision for all the cases considered in the present study. The range estimation accuracy of the developed algorithm was 0.5e1.7 mm, which is approximately 1% of beam range, for 1 109 protons. Even for the typical number of protons for a spot (1 108 ), the range estimation accuracy of the developed algorithm was 2.1e4.6 mm and smaller than the range uncertainties and typical safety margin, while that of the existing algorithm was 2.5 e9.6 mm

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