2017 Fiscal Year Research-status Report
A direct range visualization method by C-10 3-gamma Compton-PETfor C-ion therapy
| Project/Area Number |
17K09076
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| Research Institution | National Institutes for Quantum and Radiological Science and Technology |
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Principal Investigator |
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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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Keywords | Compton PET / triple gamma-ray imaging / visualization of C-10 |
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| Outline of Annual Research Achievements |
Recently, we have developed a whole gamma imaging (WGI) system which can work as PET, single gamma-ray and triple gamma-ray imaging simultaneously. First, the performance of scatterer detector of the WGI system regarding the radiation hardness was studied for C-10 irradiation, then the performance of WGI was studied by simulation using the Geant4 code. The scatterer detector consisted of a segmented GAGG crystal and a multi-pixel photon counter (MPPC) and its performance was studied as a PMMA phantom was irradiated with 5 and 400 spills of C-10 with energy of 350 MeV/u. No damage to the MPPC or scatterer detector was observed even though after irradiation of 400 spills. Sensitivity ofthe system by simulation of a C-10 nuclide at the center of field of view (FOV) was also investigated.
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| Current Status of Research Progress |
Current Status of Research Progress
1: Research has progressed more than it was originally planned.
Reason
We successfully develop a whole gamma imaging (WGI) system and we are using the system to study feasibility of C-10 visualization in ion therapy.
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| Strategy for Future Research Activity |
The performance of the system will be evaluated by simulation for irradiation of a PMMA with a C-10 ion beam and feasibility of the WGI system for visualization of C-10 will be investigated practically in the carbon therapy facility of the Heavy Ion Medical Accelerator in Chiba (HIMAC) for C-10 ion beam irradiation.
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| Causes of Carryover |
It was supposed to buy some items for the research last year but there was no need to buy any items. Because they were available in our group.
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