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Performance of the X'tal cube PET detector using 1 mm thick scintillator plates segmented to 1 x 1 mm2 by laser processing
https://repo.qst.go.jp/records/65056
https://repo.qst.go.jp/records/6505625362aa7-1c34-4edd-a872-d69142c40430
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2013-06-25 | |||||
| タイトル | ||||||
| タイトル | Performance of the X'tal cube PET detector using 1 mm thick scintillator plates segmented to 1 x 1 mm2 by laser processing | |||||
| 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 |
Inadama, Naoko
× Inadama, Naoko× Hirano, Yoshiyuki× Nishikido, Fumihiko× Murayama, Hideo× Nitta, Munetaka× Yamaya, Taiga× 稲玉 直子× 平野 祥之× 錦戸 文彦× 村山 秀雄× 新田 宗孝× 山谷 泰賀 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Objectives: We are developing a 3D position sensitive PET detector, X'tal cube. Multi-pixel photon counters (MPPCs) are coupled on all surfaces of the scintillation crystal block segmented 3 dimensionally into cubes. No reflector is inserted into the crystal block so that scintillation light spreads to all surfaces and is detected by all MPPCs. Previously, we presented a study comparing a block composed of small cubic scintillator elements and a block consisted of a monolithic scintillator segmented by laser processing technique. In order to analyze optical condition inside the laser processed crystal, we proposed the third approach: a block with stacking scintillator plates segmented 2 dimensionally by laser. This approach involves secondary benefit of increasing a yield rate of laser-processed blocks. Because we got sufficient performance for the segmentation into 2 x 2 x 2 mm3, we examined a higher-resolution X'tal cube using scintillator plates segmented into 1 x 1 x 1 mm3 cubes. \nMethods: We stacked 18 of LYSO plates with dimensions of 18 mm x 18 mm x 1 mm for the crystal block. Each plate was segmented to 18 x 18 array by the laser processing. The condition between the plates was air. 4 x 4 MPPCs of 50 micrometer type were coupled onto each surface of the crystal block. We used 22Na sources and selected the events caused by 511 keV gamma-rays by setting an appropriate energy window. Segment identification performance was evaluated in a 3D position histogram in which each segment response is appeared as the results of the Anger-type calculation using all MPPC signals. \nResults: Although there were a few overlapped segments, most responses were clearly identified. \nConclusions: We evaluated performance of the X'tal cube PET detector of 1 mm cubic segments based on a stack of laser-processed scintillator plates. |
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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 | Society of Nuclear Medicine and Molecular Imaging's (SNMMI) 2013 Annual Meeting | |||||
| 発表年月日 | ||||||
| 日付 | 2013-06-12 | |||||
| 日付タイプ | Issued | |||||
