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Corss-calibration of ionization chambers in proton and carbon beams
https://repo.qst.go.jp/records/43503
https://repo.qst.go.jp/records/43503ec8d7a40-cbf4-480c-90c9-a02b02ea1a54
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2004-10-13 | |||||
| タイトル | ||||||
| タイトル | Corss-calibration of ionization chambers in proton and carbon beams | |||||
| 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_6501 | |||||
| 資源タイプ | journal article | |||||
| 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 |
Kanai, Tatsuaki
× Kanai, Tatsuaki× Fukumura, Akifumi× Kusano, Yohsuke× Shinbo, Munefumi× Nishio, Teiji× 金井 達明× 福村 明史× 新保 宗史× 西尾 禎治 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The calibration coefficinets of a parallel plate ionization chamber are examined by comparing the coefficients obtained through three methods: a calculation from a Co-60 calibration coefficient, N[D,w,Co-60], a cross-calibration of a parallel plate ionization chamber using a cylindrical ionization chamber at the plateau region of a mono-energetic beam and a cross-calibration of the chamber using a cylindrical chamber at the middle of the SOBP of the therapeutic beams, This paper also examines reference conditions for determining absorbed dose to water in the cases of therapeutic carbon and proton beams, In the dose calibration procedure recommended by IAEA, irradiation fields should be larger than 10 cm in diameter and the water phantom should extend by at least 5 cm beyond each side of the field. These recommendations are experimentally verified for proton and carbon beams. For proton beams, the calibration coefficients obtained by these three methods epproximately agreed. For carbon beams, the calibration coefficients obtained by the second method were about 1.0 % larger thanthose obtained by the third method, and the calibration coefficinets obtained by cross-calibration using 290 MeV/u beams were 0.5% lower than those obtained using 400 MeV/u beams. The calibration coefficinet obtained by the first method agreed roughly with the results obtained by SOBP beams. | |||||
| 書誌情報 |
Physics in Medicine and Biology 巻 49, p. 771-781, 発行日 2004-02 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0031-9155 | |||||
