| 研究課題/領域番号 |
17K09076
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| 研究機関 | 国立研究開発法人量子科学技術研究開発機構 |
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研究代表者 |
Mohammadi Akram 国立研究開発法人量子科学技術研究開発機構, 放射線医学総合研究所 計測・線量評価部, 研究員(任常) (10554735)
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| 研究期間 (年度) |
2017-04-01 – 2020-03-31
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| キーワード | Compton PET / triple gamma-ray imaging / visualization of C-10 |
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| 研究実績の概要 |
The detection efficiency (sensitivity) of the WGI for a C-10 point source at the center of field of view (FOV) was obtained to be less than 0.01% from the simulation results. The performance of the system was evaluated by simulation for irradiation of a PMMA phantom with a pencil beam of a C-10 ion beam and feasibility of the WGI system for visualization of C-10 was observed for C-10 irradiation, however; improvement of the noise to signal ratio for the system is necessary. A PMMA phantom was placed at the center of FOV of the system and irradiated with C-10 beam in the carbon therapy facility of the Heavy Ion Medical Accelerator in Chiba (HIMAC). The performance of the system is still under investigation because the analysis of the detected events needs an algorithm.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
The detection efficiency (sensitivity) of the system for a C-10 point source at the center of field of view (FOV) was obtained to be less than 0.01% from the simulation results. The feasibility of the WGI system for visualization of C-10 was observed for a simulated PMMA phantom irradiated with C-10 beam using simulation, however; reduction of the image noise is necessary.
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| 今後の研究の推進方策 |
The performance of the system will be evaluated by simulation for irradiation of a PMMA for the available C-10 ion beam. The feasibility of the WGI system for practical visualization of the available C-10 ion beam is under investigation.
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| 次年度使用額が生じた理由 |
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