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Preliminary Resolution Performance of the Prototype System for a 4-Layer DOI-PET Scanner: jPET-D4
https://repo.qst.go.jp/records/44562
https://repo.qst.go.jp/records/4456220e5ed42-e798-401b-adb0-88ad141cccda
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2006-08-15 | |||||
| タイトル | ||||||
| タイトル | Preliminary Resolution Performance of the Prototype System for a 4-Layer DOI-PET Scanner: jPET-D4 | |||||
| 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_6501 | |||||
| 資源タイプ | journal article | |||||
| 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 |
Yamaya, Taiga
× Yamaya, Taiga× Hagiwara, Naoki× Obi, Takashi× Tsuda, Tomoaki× Kitamura, Keishi× Hasegawa, Tomoyuki× Haneishi, Hideaki× Inadama, Naoko× Yoshida, Eiji× Murayama, Hideo× 山谷 泰賀× 萩原 直樹× 小尾 高史× 津田 倫明× 北村 圭司× 長谷川 智之× 羽石 秀昭× 稲玉 直子× 吉田 英治× 村山 秀雄 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We are developing a high-performance brain PET scanner, jPET-D4, which provides 4-layer depth-of-interaction(DOI) information. The scanner is designed to achieve not only high spatial resolution but also high scanner sensitivity with the DOI information obtained from multi-layered thin crystals. The scanner has 5 rings of 24 detector blocks each, and each block consists of 1024 GSO crystals of 2.9mm×2.9mm×7.5mm, which are arranged in 4 layers of 16×16 arrays. At this stage, a pair of detector blocks and a coincidence circuit have been assembled into an experimental prototype gantry. In this paper, as a preliminary experiment, we investigated the performance of the jPET-D4'spatial resolution using the prototype system. First, spatial resolution was measures from a filtered backprojection reconstructed image.To avoid systematic error and reduce computational cost in image reconstruction, we applied the DOI compression (DOIC) method followed by maximum likelihood expectation maximization that we had previously proposed. Trade-off characteristics between background noise and resolution were investigated because improved spatial resolution is possible only when enhanced noise is avoided. Experimental results showed that the jPET-D4 achieves better than 3mm spatial resolution over the field-of-view. | |||||
| 書誌情報 |
IEEE Transactions on Nuclear Science 巻 53, 号 3, p. 1123-1128, 発行日 2006-06 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0018-9499 | |||||
