WEKO3
アイテム
Detector normalization and scatter correction for the jPET-D4: A 4-layer depth-of-interaction PET scanner
https://repo.qst.go.jp/records/44801
https://repo.qst.go.jp/records/448014fab8fd5-79f1-4b65-80fc-ddff1d318531
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2007-03-07 | |||||
| タイトル | ||||||
| タイトル | Detector normalization and scatter correction for the jPET-D4: A 4-layer depth-of-interaction PET scanner | |||||
| 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 |
Kitamura, Keishi
× Kitamura, Keishi× Yamaya, Taiga× Yoshida, Eiji× Murayama, Hideo× et.al× 北村 圭司× 山谷 泰賀× 吉田 英治× 村山 秀雄 |
|||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The jPET-D4 is a brain positron emission tomography (PET) scanner composed of 4-layer depth-of-interaction (DOI) detectors with a large number of GSO crystals, which achieves both high spatial resolution and high scanner sensitivity. Since the sensitivity of each crystal element is highly dependent on DOI layer depth and incidental g ray energy, it is difficult to estimate normalization factors and scatter components with high statistical accuracy. In this work, we implemented a hybrid scatter correction method combined with component-based normalization, which estimates scatter components with a dual energy acquisition using a convolution subtractionmethod for an estimation of trues from an upper energy window. In order to reduce statistical noise in sinograms, the implemented scheme uses the DOI compression (DOIC) method, that combines deep pairs of DOI layers into the nearest shallow pairs of DOI layers with natural detector samplings. Since the compressed data preserve the block detector configuration, as if the data are acquired using "virtual" detectors with high g-ray stopping power, these correction methods can be applied directly to DOIC sinograms. The proposed method provides high-quality corrected images with low statistical noise, even for a multi-layer DOI-PET. |
|||||
| 書誌情報 |
Nuclear Instruments & Methods in Physics Research Section A 巻 571, 号 1/2, p. 231-234, 発行日 2007-02 |
|||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0168-9002 | |||||
