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The basic performance evaluation of the first model of 4 dimensional CT Scanner.
https://repo.qst.go.jp/records/53271
https://repo.qst.go.jp/records/5327199dba48b-1b0a-4dfa-8516-61b26adbabbf
| Item type | 会議発表論文 / Conference Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2003-12-19 | |||||
| タイトル | ||||||
| タイトル | The basic performance evaluation of the first model of 4 dimensional CT Scanner. | |||||
| 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_5794 | |||||
| 資源タイプ | conference paper | |||||
| 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 |
森, 慎一郎
× 森, 慎一郎× 遠藤, 真広× 角尾, 卓紀× 神立, 進× 棚田, 修二× 荒舘, 博× 斉藤, 泰男× 宮崎, 博明× 佐藤, 一雅× 松下, 聡× 日下部, 正宏× 森 慎一郎× 遠藤 真広× 角尾 卓紀× 神立 進× 棚田 修二× 佐藤 一雅× 松下 聡× 日下部 正宏 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | This work was carried out to evaluate the basic performances for 4 dimensional computed tomography (4D-CT) scanner, which employs continuously rotating cone-beam. The performances were evaluated with the same method as the conventional CT, because the standard method of evaluating 4D-CT has not yet been established, and we think this result was helpful to establish it. 4D-CT scanner can give dynamic volume imaging data continuously and with high-speed. It uses a wide-area 2D detector designed on the basis of the present CT technology. The number of elements are 912(channels) x 256(segments), element size is approximately 1mm x 1mm, scanning time is 1sec, and data sampling rate is 900 views (frames)/sec. Feldkamp (FDK) algorithm was used for reconstruction. We measured six items as follows with stationary phantoms for 4D-CT, and compared them with the results of conventional multi-detector CT. 1.Noise, 2.Distortion, 3.Low Contrast and High Contrast resolution, 4.Spatial resolution, 5.Artifact, 6.Exposure dose measurement. The results were isotropic except for the evaluation of distortion in which small distortions gradually appeared as coming off the center of phantom in axial direction. | |||||
| 書誌情報 |
日本医学物理学会報文集 p. 000, 発行日 2003 |
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