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モンテカルロ計算用X線CT線源の汎用化に関する研究
https://repo.qst.go.jp/records/66292
https://repo.qst.go.jp/records/66292b0aea3c4-96df-4099-9fc2-4d10f62a833e
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2017-04-24 | |||||
| タイトル | ||||||
| タイトル | モンテカルロ計算用X線CT線源の汎用化に関する研究 | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 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 |
古場, 裕介
× 古場, 裕介× 古場 裕介 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | [Purpose]WAZA-ARI is the web-based open system for X-ray CT dose calculator, which has been developed by NIRS and Oita University of Nursing and Health Sciences and the Japan Atomic Energy Agency. The organ doses in CT scan were calculated using Monte Carlo simulation. We constructed source models based on actual measurements. The selectable CT scanners in WAZA-ARI are still not enough despite the continuing addition of CT scanners because the CT developers deliver a steady stream of new products. In this study, we investigate the general models of CT sources by categorizing exiting sources. [Methods]The organ doses in CT exposure depend on radiation quality and fluence distribution of X-ray. This information of each scanner was measured using ionization chamber and GafChromic film. We categorized CT sources based on parameter of radiation quality and fluence distribution for many CT scanner. [Results]Using the total quality equivalent filtration (TQEF) and full width at half maximum (FWHM) of dose distribution, 16 CT sources were categorized. By dividing these sources into 2 groups based FWHM, there was a significant correlation between TQEF and effective dose in typical scan conditions. [Conclusion]CT sources were categorized using TQEF and FWHM of distribution. From these results, most sources of CT scanners can be expressed using several general sources. |
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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 | 第113回日本医学物理学会学術大会 | |||||
| 発表年月日 | ||||||
| 日付 | 2017-04-14 | |||||
| 日付タイプ | Issued | |||||
