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Longitudinal radiochromic-film dosimetry for carbon-ion radiotherapy
https://repo.qst.go.jp/records/77857
https://repo.qst.go.jp/records/77857cffb12ae-1fd0-4a60-a919-1c3f6aeeced1
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-12-09 | |||||
| タイトル | ||||||
| タイトル | Longitudinal radiochromic-film dosimetry for carbon-ion radiotherapy | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
| 資源タイプ | conference object | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Kanematsu, Nobuyuki
× Kanematsu, Nobuyuki× Mizuno, Hideyuki× Nakaji, Taku× Yonai, Shunsuke× Matsumoto, Shinnosuke× Inaniwa, Taku× Kanematsu, Nobuyuki× Mizuno, Hideyuki× Nakaji, Taku× Yonai, Shunsuke× Matsumoto, Shinnosuke× Inaniwa, Taku |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | This is a feasibility study for radiochromic film (RCF) dosimetry to measure physical and biological doses for quality assurance of carbon-ion radiotherapy. We used a layer-stacking carbon-ion beam comprised of range-shifted beamlets from the Heavy Ion Medical Accelerator in Chiba (HIMAC) at the National Institute of Radiological Scienecs (NIRS). Using biophysical beam model in a treatment planning system with its measured RCF response, the layer-stacking beam was decomposed into finely arranged beamlets with weights estimated by deconvolution of longitudinal RCF responses. The distributions of physical and biological doses were reconstructed from the estimated weights and were compared with the plan. We have developed a method to measure physical and biological doses by longitudinal dosimetry of quenched response. The method only involves a general optimization algorithm, a radiobiology model, and experimental beamlet data, and requires no extra corrections. Theoretically, this approach is applicable to various dosimeters and to proton and ion beams of any delivery method, regardless of quenching or biological effectiveness. | |||||
| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | ESTRO Meets Asia 2019 | |||||
| 発表年月日 | ||||||
| 日付 | 2019-12-06 | |||||
| 日付タイプ | Issued | |||||
