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Characterization of LFS MPPC PET-detector modules: 3 mm pitch vs. 4 mm pitch
https://repo.qst.go.jp/records/77044
https://repo.qst.go.jp/records/770446dc2207a-ebca-4cdd-bc6f-73819531822f
| Item type | 会議発表論文 / Conference Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-10-02 | |||||
| タイトル | ||||||
| タイトル | Characterization of LFS MPPC PET-detector modules: 3 mm pitch vs. 4 mm pitch | |||||
| 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_5794 | |||||
| 資源タイプ | conference paper | |||||
| 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 |
Akamatsu, Go
× Akamatsu, Go× Takyu, Sodai× Yoshida, Eiji× Nitta, Munetaka× Iwao, Yuma× Mohammadi, Akram× Tashima, Hideaki× Nishikido, Fumihiko× Yamashita, Taichi× Yamaya, Taiga× Akamatsu, Go× Takyu, Sodai× Yoshida, Eiji× Nitta, Munetaka× Iwao, Yuma× Mohammadi, Akram× Tashima, Hideaki× Nishikido, Fumihiko× Yamashita, Taichi× Yamaya, Taiga |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Abstract: Time-of-flight (TOF) PET improves image quality and quantitative accuracy compared with a conventional PET system. While it is true that TOF works better for larger objects, recent improvement in timing resolution has encouraged application of TOF to brain-dedicated PET systems. Thus, as the second prototype of the helmet-type PET, we have developed a new TOF brain-dedicated PET prototype using detector modules of 12×12 lutetium fine silicate (LFS) crystals (4.1×4.1×10 mm3) connected to a 12×12 (4 mm pitch, 144-ch) MPPC array. In this paper, we investigated another detector module, which has the same outer size but smaller crystals: 16×16 LFS of 3.1×3.1×10 mm3 size coupled to 16×16 (3 mm pitch, 256-ch) MPPC array. The 3-mm 256-ch module showed an energy resolution of 12.0%. For the coincidence response function, the 3-mm module showed a better full width at half maximum (FWHM) of 1.9 mm compared with the 4-mm 144-ch module (2.4 mm). The FWHM was improved by 21%. The coincidence resolving time obtained by the 3-mm 256-ch module was 241 ps. The energy resolution and coincidence resolving time were almost the same between the two modules. The 3-mm 16×16 MPPC-based TOF-PET module can be expected to improve spatial resolution without compromising the energy resolution and coincidence resolving time compared with the 4-mm 12×12 module. |
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| 書誌情報 |
2018 IEEE Nuclear Science Symposium and Medical Imaging Conference Proceedings (NSS/MIC) 発行日 2019-09 |
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| 出版者 | ||||||
| 出版者 | IEEE | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 2577-0829 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1109/NSSMIC.2018.8824718 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://ieeexplore.ieee.org/document/8824718 | |||||
