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アイテム
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Measurement of electron density and effective atomic number using dual-energy x-ray CT
https://repo.qst.go.jp/records/67916
https://repo.qst.go.jp/records/67916360acceb-18f0-497a-b4f6-9135f50fdf18
Item type | 会議発表用資料 / Presentation(1) | |||||
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公開日 | 2004-10-28 | |||||
タイトル | ||||||
タイトル | Measurement of electron density and effective atomic number using dual-energy x-ray 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_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× et.al× 角尾 卓紀 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The information on the electron densities of bodies is important for the treatment planning of radiotherapy. In order to obtain the electron densities directly, we have developed dual-energy x-ray computed tomography(CT) using synchrotron radiation. It was experimentally proved that the electron density was deduced with about 1 % accuracy from two linear attenuation coefficient. However, the linear attenuation coefficient were measured by a few percent lower than the theoretical ones. We assumed that the less accurate linear attenuation coefficients were caused by the influence of scattered radiation and the non-linearity in the response of the detector. In comparison of the scattered radiation to the simulation results, the scattered radiation contributed at the most 0.5 % to the linear attenuation coefficients. Correcting the non-linearity in the detector response functions, the values of linear attenuation coefficient were improved drastically. |
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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 | ROME 2004 NSS - MIC - SNPS and RTSD | |||||
発表年月日 | ||||||
日付 | 2004-10-22 | |||||
日付タイプ | Issued |