Fast and accurate generation method of PSF-based system matrix for PET reconstruction
文献类型：期刊论文
| 作者 | Tang, HH ; Chai, P; Li, MH; Gao, J; Li, DW; Yun, MK; Liu, SQ; Sun, XL; Wei L(魏龙); Zhang ZM(章志明)
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| 刊名 | CHINESE PHYSICS C中国物理. C
 |
| 出版日期 | 2017 |
| 卷号 | 41期号:4页码:48201 |
| 关键词 | PSF P-SPIR system matrix GATE PET reconstruction |
| ISSN号 | 1674-1137 |
| DOI | 10.1088/1674-1137/41/4/048201 |
| 文献子类 | Article |
| 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 |
| 语种 | 英语 |
| CSCD记录号 | CSCD:5954046 |
| WOS记录号 | WOS:000400124800025 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/284748]  |
| 专题 | 高能物理研究所_核技术应用研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Tang, HH,Chai, P,Li, MH,et al. Fast and accurate generation method of PSF-based system matrix for PET reconstruction[J]. CHINESE PHYSICS C中国物理. C,2017,41(4):48201. |
| APA | Tang, HH.,Chai, P.,Li, MH.,Gao, J.,Li, DW.,...&Zhang, ZM.(2017).Fast and accurate generation method of PSF-based system matrix for PET reconstruction.CHINESE PHYSICS C中国物理. C,41(4),48201. |
| MLA | Tang, HH,et al."Fast and accurate generation method of PSF-based system matrix for PET reconstruction".CHINESE PHYSICS C中国物理. C 41.4(2017):48201. |
入库方式： OAI收割
来源：高能物理研究所
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