WEKO3
アイテム
Development of a small OpenPET prototype for in-beam experiments
https://repo.qst.go.jp/records/70326
https://repo.qst.go.jp/records/7032687e75b64-1c84-4255-b8e5-9278323600b7
| 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 | Development of a small OpenPET prototype for in-beam experiments | |||||
| 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 |
Yoshida, Eiji
× Yoshida, Eiji× et.al× 吉田 英治 |
|||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We have proposed an OpenPET geometry which consists of two axially separated detector rings. The open gap would be suitable for in-beam PET, which is a method for in situ monitoring of charged particle therapy. In the present work, we developed the first prototype of the OpenPET, especially for in-beam experiments using phantoms. The OpenPET prototype was designed with 2 detector rings of 8 detector blocks. Ring diameter was 110 mm and the minimum axial FOV was 99 mm. Distance between detector rings could be controlled. The DOI detector consisted of 784 LGSO crystals which were arranged in a 4-layer design of 14 x 14 arrays, coupled to a 64-ch PS-PMT. Each crystal element was 2.9 x 2.9 x 5 mm3. Front-end circuits were separated from the detector head by 1.2 m coaxial cables. Front-end circuits were set under the detector rings and surrounded by lead and paraffin shields. The system sensitivities were measured from a 22Na point source. The system sensitivity with 15 mm gap width was 6.7 %. On the other hand, the system sensitivity with the open gap was 5.5 %. A count rate performance test was done that utilized an 8 cm cylinder phantom. Maximum count rate of prompt was 28 kcps at 3.5 MBq. The OpenPET prototype has the promise of high sensitivity and sufficient performance for testing in in-beam experiments. | |||||
| 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 | 2010 Nuclear Science Symposium and Medical Imaging Conference | |||||
| 発表年月日 | ||||||
| 日付 | 2010-11-06 | |||||
| 日付タイプ | Issued | |||||
