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Real-Time Imaging System for a Small OpenPET Prototype
https://repo.qst.go.jp/records/70325
https://repo.qst.go.jp/records/703258df8e5fc-518f-4cb2-8e57-16bfbd069fd5
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2010-11-15 | |||||
| タイトル | ||||||
| タイトル | Real-Time Imaging System for a Small OpenPET Prototype | |||||
| 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 |
Tashima, Hideaki
× Tashima, Hideaki× Yoshida, Eiji× Kinouchi, Shoko× Suga, Mikio× Nishikido, Fumihiko× Inadama, Naoko× Murayama, Hideo× Yamaya, Taiga× 田島 英朗× 吉田 英治× 木内 尚子× 菅 幹生× 錦戸 文彦× 稲玉 直子× 村山 秀雄× 山谷 泰賀 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The OpenPET geometry has potential for real-time tracking of targeted tumors and in situ visualization of dose distribution in radiation therapy. For the real-time imaging system, we are intending to use one-pass list-mode dynamic row-action maximum likelihood algorithm (DRAMA) and implement it using general-purpose computation on graphics processing unit techniques. However, it is difficult to consistently reconstruct in real-time because the amount of data acquired in PET scan can be large depending on the activity. In this study, we developed a system to control the data used in the reconstruction step keeping quantitative performance. In the proposed system, data transfer control system limits the event count to be used in the reconstruction step according to the reconstruction speed, and the reconstructed images are properly intensified by using ratio of the used count to the total count. We implemented the system on a small OpenPET prototype system and evaluated the performance in terms of the real-time tracking ability by displaying projection images in which the intensity was compensated. The intensity of the displayed image was properly correlated with the original event number without delay. By the conference, we will incorporate real-time reconstruction system using one-pass list-mode DRAMA to display 3D images in real-time. |
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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 | 2010IEEE NSS&MIC | |||||
| 発表年月日 | ||||||
| 日付 | 2010-11-06 | |||||
| 日付タイプ | Issued | |||||
