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PET image reconstruction with a system matrix containing point spread function derived from single photon incidence response
Fan X(樊馨); Wang HP(王海鹏); Yuan MK(贠明凯); Sun XL(孙校丽); Cao XX(曹学香); Liu SQ(刘双全); Chai P(柴培); Li DW(李道武); Liu BD(刘宝东); Wang L(王璐); Wei L(魏龙); Fan, X; Wang, HP; Yun, MK; Sun, XL; Cao, XX; Liu, SQ; Chai, P; Li, DW; Liu, BD; Wang, L; Wei, L
2015
发表期刊CHINESE PHYSICS B
卷号24期号:1页码:18702
通讯作者魏龙
摘要A point spread function (PSF) for the blurring component in positron emission tomography (PET) is studied. The PSF matrix is derived from the single photon incidence response function. A statistical iterative reconstruction (IR) method based on the system matrix containing the PSF is developed. More specifically, the gamma photon incidence upon a crystal array is simulated by Monte Carlo (MC) simulation, and then the single photon incidence response functions are calculated. Subsequently, the single photon incidence response functions are used to compute the coincidence blurring factor according to the physical process of PET coincidence detection. Through weighting the ordinary system matrix response by the coincidence blurring factors, the IR system matrix containing the PSF is finally established. By using this system matrix, the image is reconstructed by an ordered subset expectation maximization (OSEM) algorithm. The experimental results show that the proposed system matrix can substantially improve the image radial resolution, contrast, and noise property. Furthermore, the simulated single gamma-ray incidence response function depends only on the crystal configuration, so the method could be extended to any PET scanner with the same detector crystal configuration.
文章类型Article
关键词point spread function single photon incidence system matrix positron emission tomography
学科领域Physics
DOI10.1088/1674-1056/24/1/018702
收录类别SCI ; EI
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000350701400085
引用统计
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228281
专题核技术应用研究中心
推荐引用方式
GB/T 7714
Fan X,Wang HP,Yuan MK,et al. PET image reconstruction with a system matrix containing point spread function derived from single photon incidence response[J]. CHINESE PHYSICS B,2015,24(1):18702.
APA 樊馨.,王海鹏.,贠明凯.,孙校丽.,曹学香.,...&Wei, L.(2015).PET image reconstruction with a system matrix containing point spread function derived from single photon incidence response.CHINESE PHYSICS B,24(1),18702.
MLA 樊馨,et al."PET image reconstruction with a system matrix containing point spread function derived from single photon incidence response".CHINESE PHYSICS B 24.1(2015):18702.
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