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Simulation sutudies of a new 'Open PET' goemetry based on a quad unit of detector rings
https://repo.qst.go.jp/records/45459
https://repo.qst.go.jp/records/4545976231487-a951-428f-a107-70a3cc6a7ee7
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2009-03-27 | |||||
| タイトル | ||||||
| タイトル | Simulation sutudies of a new 'Open PET' goemetry based on a quad unit of detector rings | |||||
| 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_6501 | |||||
| 資源タイプ | journal article | |||||
| 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 |
Yamaya, Taiga
× Yamaya, Taiga× Inaniwa, Taku× Yoshida, Eiji× Nishikido, Fumihiko× Shibuya, Kengo× Inadama, Naoko× Murayama, Hideo× 山谷 泰賀× 稲庭 拓× 吉田 英治× 錦戸 文彦× 澁谷 憲悟× 稲玉 直子× 村山 秀雄 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We have proposed an 'OpenPET' geometry which consists of two detector rings of axial length W each axially separated by a gap G. In order to obtain an axially continuous field-of-view (FOV) of 2W+G, the maximum limit for G must be W. However, two valleys of sensitivity appear, one on each side of the gap. In practice, the gap should be G<W in order to compensate for the sensitivity valleys. In this paper, we proposed an alternative method to improve uniformity of the sensitivity while maintaining the gap. The proposed geometry consisted of four units of detector rings obtained by dividing each right and left unit of detector rings into two units. The inner two units formed the main gap, and the outer two units were appropriately placed to improve the uniformity of sensitivity. The geometry was optimized to minimize the standard deviation of the sensitivity distribution. Numerical simulation results supported the effectiveness of the proposed method. The outer units compensated for the sensitivity valleys on both sides of the main gap. A more appropriate geometry should be designed for the desired application, such as a long axial FOV PET and in-beam PET. | |||||
| 書誌情報 |
Physics in Medicine and Biology 巻 54, 号 5, p. 1223-1233, 発行日 2009-03 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0031-9155 | |||||
