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Theoretical and Numerical Analysis of the Single-Ring OpenPET Geometry for In-beam PET
https://repo.qst.go.jp/records/70959
https://repo.qst.go.jp/records/7095911205c2a-903b-4331-9cfd-c7eb392becc9
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2012-11-06 | |||||
| タイトル | ||||||
| タイトル | Theoretical and Numerical Analysis of the Single-Ring OpenPET Geometry for In-beam PET | |||||
| 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× Hirano, Yoshiyuki× Kinouchi, Shoko× Yoshida, Eiji× Ito, Hiroshi× Yamaya, Taiga× 田島 英朗× 平野 祥之× 木内 尚子× 吉田 英治× 伊藤 浩× 山谷 泰賀 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We are developing the OpenPET, an open type PET geometry having an accessible and observable open space between detector rings which allows easy access to a patient during PET measurements. Our first generation OpenPET which we called dual-ring OpenPET consisted of two detector rings having a gap between them and it could provide an extended axial field of view (FOV). For applications such as in-beam PET to monitor dose distribution in situ during particle therapy, however, higher sensitivity is required rather than a wide FOV. As the next generation OpenPET, we proposed the single-ring OpenPET which was a geometry having an accessible and observable open space with higher sensitivity and a reduced number of detectors than the earlier geometry. In this paper, we provide a theoretical analysis of the sensitivity for the single-ring OpenPET and we compare it with the dual-ring OpenPET and a geometry in which the conventional PET is positioned at a slant angle against the patient bed to form an accessible open space, which we called slant PET. The theoretical analysis shows that the single-ring OpenPET has a sensitivity 1.2 times higher than the dual-ring OpenPET and 1.3 times higher than the slant PET when designed for about 200 detector blocks, each with a front area of 2500 mm2. In addition, numerical simulation using the Geant4 Monte Carlo toolkit is done to show the three-dimensional imaging performance that the single-ring OpenPET realized with the ellipsoidal rings of block detectors. The numerical simulation demonstrates that the depth-of-interaction detector can provide uniform resolution even when the detectors are arranged in an ellipsoidal ring. | |||||
| 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 | 2012 Nuclear Science Symposium, Medical Imaging Conference & Workshop on Room-Temperature Semiconductor X-Ray and Gamma-Ray Detectors | |||||
| 発表年月日 | ||||||
| 日付 | 2012-11-03 | |||||
| 日付タイプ | Issued | |||||
