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Effect of Time-of-Flight Information to Fill Lost-Frequency in Incomplete PET Geometry
https://repo.qst.go.jp/records/71711
https://repo.qst.go.jp/records/717116164eab3-8d49-4ed4-b0f0-a6b66e0d4c79
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2015-06-08 | |||||
| タイトル | ||||||
| タイトル | Effect of Time-of-Flight Information to Fill Lost-Frequency in Incomplete PET Geometry | |||||
| 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 |
田島, 英朗
× 田島, 英朗× 山谷, 泰賀× Tashima, Hideaki× Yamaya, Taiga |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The time-of-flight (TOF) information can improve image quality in positron emission tomography (PET). In addition, it is known that the TOF information can significantly reduce the occurrence of image artifacts in incomplete geometries such as partial ring PET. In this study, we apply TOF information to the dual-ring OpenPET geometry, in which low frequency components are missing. We analyzed the TOF projection data in the incomplete PET geometry. Compared with the non-TOF projection data, the TOF projection data have wide range of frequency component along the projection direction. The theoretical analysis showed that the TOF projection data can fill lost-frequency components in the gap region of the dual-ring OpenPET. Also, numerical simulation showed that the reconstructed images with the TOF information had lost-frequency components which were lost in the non TOF reconstruction images. Therefore, we concluded that the TOF information is theoretically and practically effective for filling lost-frequency regions in incomplete geometries. | |||||
| 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 13th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine | |||||
| 発表年月日 | ||||||
| 日付 | 2015-06-03 | |||||
| 日付タイプ | Issued | |||||
