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Timing Resolution Improved by DOI Information in a Four-Layer LYSO PET Detector
https://repo.qst.go.jp/records/69371
https://repo.qst.go.jp/records/69371c4bcecfd-7288-4758-8287-c1ea4e815658
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2008-06-24 | |||||
| タイトル | ||||||
| タイトル | Timing Resolution Improved by DOI Information in a Four-Layer LYSO PET Detector | |||||
| 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 |
Shibuya, Kengo
× Shibuya, Kengo× Nishikido, Fumihiko× Inadama, Naoko× Yoshida, Eiji× Lam, ChihFung× Tsuda, Tomoaki× Yamaya, Taiga× Murayama, Hideo× 澁谷 憲悟× 錦戸 文彦× 稲玉 直子× 吉田 英治× Ｌａｍ ＣｈｉｈＦｕｎｇ× 津田 倫明× 山谷 泰賀× 村山 秀雄 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Depth-of-interaction (DOI) PET detectors possess three-dimensional information on the interaction point of annihilation radiation and a scintillator crystal. The information has been used for improving PET spatial resolution especially at the edge of field-of-view. In this paper, DOI information is used for improving timing resolution of scintillation detectors. The annihilation radiation travels at the light speed, c, while scintillation photon travels at the speed of c/n in medium, where n is the refractive index. The difference in the propagation speed causes timing error which depends on the DOI. Given that the total length of the scintillator is 3.0 cm and the refractive index is 1.8, the error is estimated to be 80 ps or longer. We experimentally evaluated the timing error as the function of the DOI by using Pseudo-four-layer DOI detector and a fast digital oscilloscope. The detector was composed of an LYSO scintillator crystal and 255 dummy crystals made of silica. As the result, the error was estimated to be about 100 ps. Timing correction using DOI information would be an important technique when constructing high timing resolution PET detectors, especially ones for time-of-flight PET. | |||||
| 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 | IEEE 2007 Nuclear Science Symposium and Medical Imaging Conference | |||||
| 発表年月日 | ||||||
| 日付 | 2007-11-03 | |||||
| 日付タイプ | Issued | |||||
