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Study on Dual-Energy X-ray Computed Tomography using Synchrotron Radiation
https://repo.qst.go.jp/records/67455
https://repo.qst.go.jp/records/6745562244cf6-d43b-41d1-a37d-ee49bab45133
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2003-09-01 | |||||
| タイトル | ||||||
| タイトル | Study on Dual-Energy X-ray Computed Tomography using Synchrotron Radiation | |||||
| 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 |
Tsunoo, Takanori
× Tsunoo, Takanori× Torikoshi, Masami× Endo, Masahiro× Natsuhori, Masahiro× Kakizaki, Takehiko× Yamada, Naoaki× Ito, Nobuhiko× Uesugi, Kentaro× Yagi, Naoto× Hyoudou, Kazuyuki× 角尾 卓紀× 取越 正己× 遠藤 真広× 夏堀 雅宏× 柿崎 竹彦× 山田 直明× 伊藤 伸彦× 兵藤 一行 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The electron density is one of the most important element for the treatment planning in the radiotherapy, because this information is used for the range estimation of the heavy-ion beam. Although the electron density has been converted from CT number obtained by conventional x-ray computed tomography(CT) at present, it is not enough for the more detailed planning due to uncertainties that arise from the beam hardening effect and the conversion process. In order to take more accurate electron density, we have developed the dual-energy x-ray CT system using the synchrotron radiation. The dual-energy x-ray CT has no influence of the beam hardening because of scanning using monochromatic x-rays. The experiments were carried out using two monochromatic x-rays at the monochromatic beam-lines in KEK-AR and SPring-8. As the result, it was succeeded that the electron densities by the dual-energy x-ray CT were agreement with the theoretical values with the accuracy less than 1% for some materials. In addition, as the application for more practical use in diagnostics, the CT using the mixture of main and harmonics x-rays produced by the monochromator has been investigated. From the preliminary experiments, it was found that the accuracy was as same as that by dual-energy x-ray CT. We will describe the dual-energy x-ray CT system and discuss the quantitativity and the image characteristic for this system. |
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| 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 | Eighth International Conference on Synchrotron Radiation Instrumentation | |||||
| 発表年月日 | ||||||
| 日付 | 2003-08-29 | |||||
| 日付タイプ | Issued | |||||
