Carbon range verification with 718 keV Compton imaging
Abstract Carbon ion radiotherapy is a sophisticated radiation treatment modality because of its superiority in achieving precise dosage distribution and high biological effectiveness. However, there exist beam range uncertainties that affect treatment efficiency. This problem can be resolved if the...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2021-11-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-00949-5 |
| _version_ | 1819041152517537792 |
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| author | Raj Kumar Parajuli Makoto Sakai Kazuo Arakawa Yoshiki Kubota Nobuteru Kubo Mutsumi Tashiro |
| author_facet | Raj Kumar Parajuli Makoto Sakai Kazuo Arakawa Yoshiki Kubota Nobuteru Kubo Mutsumi Tashiro |
| author_sort | Raj Kumar Parajuli |
| collection | DOAJ |
| description | Abstract Carbon ion radiotherapy is a sophisticated radiation treatment modality because of its superiority in achieving precise dosage distribution and high biological effectiveness. However, there exist beam range uncertainties that affect treatment efficiency. This problem can be resolved if the clinical beam could be monitored precisely in real-time, such as by imaging the prompt gamma emission from the target. In this study, we performed real-time detection and imaging of 718 keV prompt gamma emissions using a Si/CdTe Compton camera. We conducted experiments on graphite phantoms using clinical carbon ion beams of 290 MeV/u energy. Compton images were reconstructed using simple back-projection methods from the energy events of 718 keV prompt gamma emissions. The peak intensity position in reconstructed 718 keV prompt gamma images was few millimeters below the Bragg peak position. Moreover, the dual- and triple-energy window images for all positions of phantoms were not affected by scattered gammas, and their peak intensity positions were approximately similar to those observed in the reconstructed 718 keV prompt gamma images. In conclusion, the findings of the current study demonstrate the feasibility of using our Compton camera for real-time beam monitoring of carbon ion beams under clinical beam intensity. |
| first_indexed | 2024-12-21T09:20:27Z |
| format | Article |
| id | doaj.art-23bcaa0360df4118ad8956af5c4a622e |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-21T09:20:27Z |
| publishDate | 2021-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-23bcaa0360df4118ad8956af5c4a622e2022-12-21T19:09:02ZengNature PortfolioScientific Reports2045-23222021-11-011111910.1038/s41598-021-00949-5Carbon range verification with 718 keV Compton imagingRaj Kumar Parajuli0Makoto Sakai1Kazuo Arakawa2Yoshiki Kubota3Nobuteru Kubo4Mutsumi Tashiro5Department of Molecular Imaging and Theranostics, National Institutes for Quantum Science and TechnologyGunma University Heavy Ion Medical Center, Gunma UniversityGunma University Heavy Ion Medical Center, Gunma UniversityB Dot Medical Inc.Department of Radiation Oncology, Graduate School of Medicine, Gunma UniversityGunma University Heavy Ion Medical Center, Gunma UniversityAbstract Carbon ion radiotherapy is a sophisticated radiation treatment modality because of its superiority in achieving precise dosage distribution and high biological effectiveness. However, there exist beam range uncertainties that affect treatment efficiency. This problem can be resolved if the clinical beam could be monitored precisely in real-time, such as by imaging the prompt gamma emission from the target. In this study, we performed real-time detection and imaging of 718 keV prompt gamma emissions using a Si/CdTe Compton camera. We conducted experiments on graphite phantoms using clinical carbon ion beams of 290 MeV/u energy. Compton images were reconstructed using simple back-projection methods from the energy events of 718 keV prompt gamma emissions. The peak intensity position in reconstructed 718 keV prompt gamma images was few millimeters below the Bragg peak position. Moreover, the dual- and triple-energy window images for all positions of phantoms were not affected by scattered gammas, and their peak intensity positions were approximately similar to those observed in the reconstructed 718 keV prompt gamma images. In conclusion, the findings of the current study demonstrate the feasibility of using our Compton camera for real-time beam monitoring of carbon ion beams under clinical beam intensity.https://doi.org/10.1038/s41598-021-00949-5 |
| spellingShingle | Raj Kumar Parajuli Makoto Sakai Kazuo Arakawa Yoshiki Kubota Nobuteru Kubo Mutsumi Tashiro Carbon range verification with 718 keV Compton imaging Scientific Reports |
| title | Carbon range verification with 718 keV Compton imaging |
| title_full | Carbon range verification with 718 keV Compton imaging |
| title_fullStr | Carbon range verification with 718 keV Compton imaging |
| title_full_unstemmed | Carbon range verification with 718 keV Compton imaging |
| title_short | Carbon range verification with 718 keV Compton imaging |
| title_sort | carbon range verification with 718 kev compton imaging |
| url | https://doi.org/10.1038/s41598-021-00949-5 |
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