WEKO3
アイテム
The basic performance evaluation of the first model of 4 Dimensional CT Scanner
https://repo.qst.go.jp/records/67699
https://repo.qst.go.jp/records/6769917aa93f3-be05-406a-8991-a6697d0ff05a
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2003-12-22 | |||||
| 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 | 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 |
Mori, Shinichirou
× Mori, Shinichirou× Endo, Masahiro× Tsunoo, Takanori× Kandatsu, Susumu× Tanada, Shuji× Aradate, Hiroshi× Saito, Yasuo× Miyazaki, Hiroaki× Sato, Kazumasa× Matsushita, Satoshi× Kusakabe, Masahiro× 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 |
|||||
| 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. Volume range of the longitudinal length is about 10cm. 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 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 longitudinal direction. We confirmed a uniformity of CT value in longitudinal and transaxial sections. The evaluations of other items were very close to those of conventional CT. |
|||||
| 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 | SPIE | |||||
| 発表年月日 | ||||||
| 日付 | 2003-02-19 | |||||
| 日付タイプ | Issued | |||||
