Fast and accurate generation method of psf-based system matrix for pet reconstruction
文献类型：期刊论文
| 作者 | Sun, Xiao-Li1,2,3; Liu, Shuang-Quan1,2; Yun, Ming-Kai1,2; Li, Dao-Wu1,2; Gao, Juan1,2; Li, Mo-Han1,2,3; Chai, Pei1,2; Tang, Hao-Hui1,2; Zhang, Zhi-Ming1,2; Wei, Long1,2 |
| 刊名 | Chinese physics c
 |
| 出版日期 | 2017-04-01 |
| 卷号 | 41期号:4页码:8 |
| 关键词 | Psf P-spir System matrix Gate Pet reconstruction |
| ISSN号 | 1674-1137 |
| 通讯作者 | Wei, long(weil@ihep.ac.cn) |
| 英文摘要 | This work investigates the positional single photon incidence response (p-spir) to provide an accurate point spread function (psf)-contained system matrix and its incorporation within the image reconstruction framework. based on the geant4 application for emission tomography (gate) simulation, p-spir theory takes both incidence angle and incidence position of the gamma photon into account during crystal subdivision, instead of only taking the former into account, as in single photon incidence response (spir). the response distribution obtained in this fashion was validated using monte carlo simulations. in addition, two-block penetration and normalization of the response probability are introduced to improve the accuracy of the psf. with the incorporation of the psf, the homogenization model is then analyzed to calculate the spread distribution of each line-of-response (lor). a primate pet scanner, eplus-260, developed by the institute of high energy physics, chinese academy of sciences (ihep), was employed to evaluate the proposed method. the reconstructed images indicate that the p-spir method can effectively mitigate the depth-of-interaction (doi) effect, especially at the peripheral area of field-of-view (fov). furthermore, the method can be applied to pet scanners with any other structures and list-mode data format with high flexibility and efficiency. |
| WOS关键词 | POINT-SPREAD FUNCTION ; IMAGE-RECONSTRUCTION ; SIMULATION ; RESOLUTION ; SCANNER ; VALIDATION ; DETECTOR ; GPU |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Nuclear ; Physics, Particles & Fields |
| 语种 | 英语 |
| WOS记录号 | WOS:000400124800025 |
| 出版者 | CHINESE PHYSICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177192 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Wei, Long |
| 作者单位 | 1.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 2.Beijing Engn Res Ctr Radiog Tech & Equipment, Beijing 10049, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Xiao-Li,Liu, Shuang-Quan,Yun, Ming-Kai,et al. Fast and accurate generation method of psf-based system matrix for pet reconstruction[J]. Chinese physics c,2017,41(4):8. |
| APA | Sun, Xiao-Li.,Liu, Shuang-Quan.,Yun, Ming-Kai.,Li, Dao-Wu.,Gao, Juan.,...&Wei, Long.(2017).Fast and accurate generation method of psf-based system matrix for pet reconstruction.Chinese physics c,41(4),8. |
| MLA | Sun, Xiao-Li,et al."Fast and accurate generation method of psf-based system matrix for pet reconstruction".Chinese physics c 41.4(2017):8. |
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来源：高能物理研究所
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