An MLEM Method for Joint Tissue Activity Distribution and Photon Attenuation Map Reconstruction in PET

被引：0

作者：

Mihlin, Alexander ^{[1
]}

Levin, Craig S. ^{[1
]}

机构：

[1] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA

来源：

2013 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC) | 2013年

关键词：

EMISSION;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A Maximum Likelihood Expectation Maximization (MLEM) method is proposed for joint tissue activity distribution and photon attenuation map reconstruction from Positron Emission Tomography (PET) data. It is based on a new set of latent random variables, similar to the ones used by Lange and Carson for CT [JCAT, 1984]. It results in a separable likelihood function, which simplifies maximization. The proposed method is consistent with the methods of Krol et al. for SPECT [TMI, 2001] and Shepp and Vardi for PET [TMI, 1982].

引用

页数：3

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