WEKO3
アイテム
Dual-Ended 20-Layer DOI Detector for Small Animal PET Using Subsurface Laser Engraving Technique
https://repo.qst.go.jp/records/77165
https://repo.qst.go.jp/records/771655d1a6665-84e9-4259-8186-e5b1acdb826c
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-10-18 | |||||
| タイトル | ||||||
| タイトル | Dual-Ended 20-Layer DOI Detector for Small Animal PET Using Subsurface Laser Engraving Technique | |||||
| 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 |
Mohammadi, Akram
× Mohammadi, Akram× Inadama, Naoko× Nishikido, Fumihiko× Yoshida, Eiji× Yamaya, Taiga× Mohammadi, Akram× Inadama, Naoko× Nishikido, Fumihiko× Yoshida, Eiji× Yamaya, Taiga |
|||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Depth of interaction (DOI) information is indispensable to improve sensitivity and resolution of positron emission tomography (PET) systems. We recently developed two dual-ended detectors with DOI resolutions of 3 mm and 1.5 mm using crystal bars of 3×3×20 mm3 and 1.5×1.5×20 mm3, respectively, segmented by applying the subsurface laser engraving (SSLE) technique to 7 and 13 DOI segments. However, the spatial resolution of our detector needs to be improved for a small animal PET scanner with submillimeter resolution. In this work, we developed two types of dual-ended detectors; one consisted of crystal bars of 1×1×20 mm3 (with 1.67 mm DOI resolution) with readout along the radial direction and the other consisted of crystal bars of 2×1×20 mm3 (with segment pitch of 1 mm) with the readout along the axial direction. The crystal bars were segmented in the height direction by applying the SSLE technique. We evaluated the performances of two detectors from the viewpoint of the best crystal identification; the first was composed of one 8×8 crystal array made of 1×1×20 mm3 crystal bars (with 12 segments and segment pitch of 1.67 mm) and the second one was composed of one 4×8 crystal array made of 2×1×20 mm3 crystal bars (with 20 segments and segment pitch of 1 mm). The 3D position maps of the detectors were obtained by the Anger type calculation and the crystal identification performance was evaluated for the crystal arrays. Clear separation was obtained for both crystal arrays with 12 and 20 segments with segment resolutions of 1.67 mm and 1 mm, respectively. The energy resolutions were also evaluated for both crystal arrays. The energy resolutions of 8.0% ± 0.6% and 9.0% ± 0.7% were obtained for the segments at the middle of the 8×8 and 4×8 crystal arrays, respectively. | |||||
| 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 | The 2019 IEEE Nuclear Science Symposium (NSS) and Medical Imaging Conference (MIC) | |||||
| 発表年月日 | ||||||
| 日付 | 2019-11-01 | |||||
| 日付タイプ | Issued | |||||
