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A Small Prototype for a Proof-of-Concept of OpenPET Imaging
https://repo.qst.go.jp/records/64114
https://repo.qst.go.jp/records/6411431d5586f-17ab-422a-a875-920e34626448
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2010-11-18 | |||||
| タイトル | ||||||
| タイトル | A Small Prototype for a Proof-of-Concept of OpenPET Imaging | |||||
| 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 |
Yamaya, Taiga
× Yamaya, Taiga× Yoshida, Eiji× Kinouchi, Shoko× Suga, Mikio× Satou, Shinji× Inaniwa, Taku× Nakajima, Yasunori× Kokuryo, Daisuke× Aoki, Ichio× Tsuji, Atsushi× Mitsuhashi, Takayuki× Wakizaka, Hidekatsu× Tashima, Hideaki× Nishikido, Fumihiko× Inadama, Naoko× Murayama, Hideo× 山谷 泰賀× 吉田 英治× 木内 尚子× 菅 幹生× 佐藤 眞二× 稲庭 拓× 中島 靖紀× 國領 大介× 青木 伊知男× 辻 厚至× 三橋 隆之× 脇坂 秀克× 田島 英朗× 錦戸 文彦× 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 | The OpenPET geometry is our new idea to visualize a physically opened space between two detector rings. The OpenPET is expected to enable 1) PET image-guided radiation therapy by letting the beams pass though the gap, 2) real-time multimodal imaging by inserting another imaging device in the gap, and 3) extension of an axial field-of-view (FOV) with the limited number of detectors. In this paper, we developed the first small prototype to show a proof-of-concept of OpenPET imaging. The prototype was designed as a compact system so as to be easily carried between PET areas and therapy areas such as the Heavy Ion Medical Accelerator in Chiba (HIMAC). Two detector rings of 110 mm in diameter composed of 8 block-detectors were placed with a gap of 42 mm. Actual gap was limited to 27 mm by the gantry structure. Each block-detector, which had 4-layer depth-of-interaction capability, was composed of 2.9 x 2.9 x 5 mm<sup>3</sup> LGSO crystals and a Hamamatsu H8500 PMT. For a proof-of-concept of PET imaging during radiation therapy, we carried out the in-beam tests in the HIMAC to visualize <i>in situ</i> dose distribution. The OpenPET prototype was positioned so that the beam passes through the gap. A PMMA cylindrical phantom of 4 cm in diameter, placed in the center of the PET FOV, was irradiated along radial direction by a <sup>11</sup>C pencil beam. We showed that PET images corresponding to dose distribution were obtained. For an initial proof-of-concept of real-time multimodal imaging, we measured a tumor-inoculated mouse with FDG, and an optical image of the surface was taken during PET measuring by inserting a digital camera in the gap. We confirmed that the tumor in the gap was clearly visualized. The result also showed the effect of extension of an axial FOV, and the large axial FOV of 126 mm was obtained with the detectors originally covering only an 84 mm axial FOV. In conclusion, our initial imaging studies showed promising performance of the OpenPET prototype. | |||||
| 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 | |||||
