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Development of a DOI-PET detector X'tal cube: optimal position calculation for each optical condition in the scintillation crystal block
https://repo.qst.go.jp/records/64960
https://repo.qst.go.jp/records/649609a43bd17-ce38-4845-9c7f-fc6dfcb8a3cc
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2013-04-15 | |||||
| タイトル | ||||||
| タイトル | Development of a DOI-PET detector X'tal cube: optimal position calculation for each optical condition in the scintillation crystal block | |||||
| 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× Nishikido, Fumihiko× Hirano, Yoshiyuki× Yoshida, Eiji× Tashima, Hideaki× Murayama, Hideo× Nitta, Munetaka× Ito, Hiroshi× Yamaya, Taiga× et.al× 稲玉 直子× 錦戸 文彦× 平野 祥之× 吉田 英治× 田島 英朗× 村山 秀雄× 新田 宗孝× 伊藤 浩× 山谷 泰賀 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | X'tal cube is the PET detector we have developed and it has the capability of getting depth of interaction (DOI) information about radiation detected position in the detector. Fig. 1 illustrates the structure of the X'tal cube. It is composed of a scintillation crystal block and a number of multi-pixel photon counters (MPPCs) on the crystal block surfaces. A MPPC is thin and small enough not to interfere in radiation detection. The crystal block is segmented 3-dimensionally into small cubes. There is no reflector between the crystal segments so that scintillation light originating in a radiation detected segment spreads to all 6 surfaces and detected by all MPPCs. Simple Anger-type calculation can be used in position calculation for segment identification. By expressing results of the calculation with the all MPPC signals in a 3-dimensional (3D) position histogram, we get response corresponding to each crystal segment. In the first stage, we composed of the crystal block by fabricating a 3D array with small cubic crystal segments (array-XC). Later, we newly developed the laser processing technique to segment inside of a monolithic crystal block 3-dimensionally (laser-XC). In both ways, we have already confirmed that small segments such as 1.0 mm x 1.0 mm x 1.0 mm segments can be identified in the X'tal cube structure. Meanwhile, in a basic study, we found that scintillation light spreads in different manners between the array and laser-XCs due to different condition of optical discontinuity between crystal segments. Because different light distribution among MPPCs should result in different segment response positioning in the 3D position histogram, we reconsidered about the weight of Anger-type calculation to improve segment identification performance for the array and laser- XCs. |
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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 | 第105回日本医学物理学会学術大会 | |||||
| 発表年月日 | ||||||
| 日付 | 2013-04-14 | |||||
| 日付タイプ | Issued | |||||
