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Application of heavy-ion CT
https://repo.qst.go.jp/records/44568
https://repo.qst.go.jp/records/445688d049b86-a09e-40a6-a648-6a49e07426b8
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2006-08-22 | |||||
| タイトル | ||||||
| タイトル | Application of heavy-ion CT | |||||
| 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 |
Shinoda, Hiroshi
× Shinoda, Hiroshi× Kanai, Tatsuaki× Kohno, Toshiyuki× 篠田 浩司× 金井 達明× 河野 俊之 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | In treatment planning for hadron therapy, information about the relative stopping power in a patient's body is used to calculate the range of incident ions. This information is obtained from computed tomography (CT) images using a conversion table from x-ray CT numbers into stopping powers relative to the stopping power of water. In treatment planning at the National Institute of Radiological Sciences (NIRS), the conversion table has been created based on the polybinary tissue model. However, it has not been fully verified that the model is accurate enough for use in real animal tissues. In order to irradiate heavy ions more precisely in radiotherapy, we have to evaluate the accuracy of the polybinary tissue calibration in animal tissues. We have measured animal tissue samples with a heavy-ion CT (HICT) and an x-ray CT. The x-ray CT image was converted to an image of relative stopping power by using the table derived from the polybinary tissue calibration (polybinary-tissue-model CT (PTCT) image). On the other hand, with HICT, the two-dimensional distribution of relative stopping power can be obtained directly. A comparison between PTCT and HICT images enabled us to verify the accuracy of the conversion table derived from the polybinary tissue calibration. Consequently, it was found that the agreement between the relative stopping powers of PTCT and HICT is 1.6% for fat, muscle and bone. | |||||
| 書誌情報 |
Physics in Medicine and Biology 巻 51, 号 16, p. 4073-4081, 発行日 2006-08 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0031-9155 | |||||
