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Performance evaluation of the X'tal cube PET detector using a monolithic scintillator segmented by laser processing
https://repo.qst.go.jp/records/64778
https://repo.qst.go.jp/records/64778b35653dd-6349-4dda-a682-a06b7ceab5c3
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2012-10-04 | |||||
| タイトル | ||||||
| タイトル | Performance evaluation of the X'tal cube PET detector using a monolithic scintillator segmented 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× Murayama, Hideo× Nishikido, Fumihiko× Yoshida, Eiji× Tashima, Hideaki× Yamaya, Taiga× et.al× 稲玉 直子× 村山 秀雄× 錦戸 文彦× 吉田 英治× 田島 英朗× 山谷 泰賀 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Objectives: The X'tal cube is the PET detector we have developed. It consists of a scintillation crystal block segmented into cubes and multi-pixel photon counters (MPPCs) which are coupled onto all six surfaces of the crystal block. A MPPC is a small semiconductor photo-detector. Recently, we achieved 1 mm isotropic spatial resolution in this structure by identifying 1 mm cubic crystals which composed the crystal block. As a part of the X'tal cube development, we have studied laser processing technique for easier crystal segmentation instead of composing the crystal block with such fine crystals. Because the laser processing has difficulty in the depth direction of a thick crystal block, as the first trial, we made segmentation of 3 mm intervals in each three direction of an 18 mm cubic monolithic crystal. Performance of the X'tal cube with the processed crystal block (laser-X'tal) was evaluated and compared in case the crystal block was composed of 3 mm cubic crystals (array-X'tal). \nMethods: Performance of crystal segment identification was evaluated with the 3-dimensional position histogram in which the results of Anger-type calculation of the MPPC signals in each three dimension were plotted. Each segment makes corresponding response in the histogram. A 137Cs point source was used for the measurement. For the crystal and a MPPC, we used LYSO and S10931-50P (Hamamatsu Photonics K.K., sensitive area; 3 x 3 mm2, micro cell; 50 um2), respectively. \nResults: Obtained position histograms showed sufficient segment identification performance of both the X'tal cubes. Average energy resolutions were 8.4 % and 10.4 % for the laser- and array-X'tals, respectively. \nConclusions: We showed that laser processing is feasible enough for easy and precise segmentation of the crystal block. In the next stage, we will try finer segmentation of 2 mm intervals. \nResearch Support: Funds from Japan Science and Technology Agency (JST) Development of Systems and Technology for Advanced Measurement and Analysis. |
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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 | SNM Annual Meeting | |||||
| 発表年月日 | ||||||
| 日付 | 2011-06-08 | |||||
| 日付タイプ | Issued | |||||
