Abstract：
:In single photon emission computed tomography (SPECT), every reconstruction algorithm must use some model for the response of the gamma camera to emitted gamma-rays. The true camera response is both spatially variant and object dependent. These two properties result from the effects of scatter, septal penetration, and attenuation, and they forestall determination of the true response with any precision. This motivates the investigation of the performance of reconstruction algorithms when there are errors between the camera response used in the reconstruction algorithm and the true response of the gamma camera. In this regard, the authors compare the filtered backprojection algorithm, the expectation-maximization maximum likelihood algorithm, and the generalized expectation maximization (GEM) maximum a posteriori (MAP) algorithm, a Bayesian algorithm which uses a Markov random field prior.
journal_name
IEEE Trans Med Imagingjournal_title
IEEE transactions on medical imagingauthors
Hebert TJ,Gopal SSdoi
10.1109/42.126914subject
Has Abstractpub_date
1992-01-01 00:00:00pages
81-90issue
1eissn
0278-0062issn
1558-254Xjournal_volume
11pub_type
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journal_title：IEEE transactions on medical imaging
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journal_title：IEEE transactions on medical imaging
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journal_title：IEEE transactions on medical imaging
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journal_title：IEEE transactions on medical imaging
pub_type： 杂志文章
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journal_title：IEEE transactions on medical imaging
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更新日期：2016-01-01 00:00:00
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journal_title：IEEE transactions on medical imaging
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更新日期：2019-12-01 00:00:00
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doi：10.1109/TMI.2003.819299
更新日期：2003-11-01 00:00:00
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pub_type： 杂志文章
doi：10.1109/42.34711
更新日期：1989-01-01 00:00:00
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doi：10.1109/TMI.2014.2343936
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journal_title：IEEE transactions on medical imaging
pub_type： 杂志文章
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journal_title：IEEE transactions on medical imaging
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更新日期：1998-08-01 00:00:00
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journal_title：IEEE transactions on medical imaging
pub_type： 杂志文章,已发布勘误
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更新日期：2018-08-01 00:00:00
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journal_title：IEEE transactions on medical imaging
pub_type： 杂志文章
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journal_title：IEEE transactions on medical imaging
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journal_title：IEEE transactions on medical imaging
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更新日期：2020-04-01 00:00:00
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journal_title：IEEE transactions on medical imaging
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doi：10.1109/TMI.2021.3052972
更新日期：2021-01-20 00:00:00
