Linked Life Data

10385287

Source:http://linkedlifedata.com/resource/pubmed/id/10385287

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pubmed-article:10385287pubmed:abstractTextWe examine the spatial resolution and variance properties of PET images reconstructed using maximum a posteriori (MAP) or penalized-likelihood methods. Resolution is characterized by the contrast recovery coefficient (CRC) of the local impulse response. Simplified approximate expressions are derived for the local impulse response CRC's and variances for each voxel. Using these results we propose a practical scheme for selecting spatially variant smoothing parameters to optimize lesion detectability through maximization of the local CRC-to-noise ratio in the reconstructed image.lld:pubmed
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pubmed-article:10385287pubmed:dateRevised2007-11-14lld:pubmed
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pubmed-article:10385287pubmed:year1999lld:pubmed
pubmed-article:10385287pubmed:articleTitleA theoretical study of the contrast recovery and variance of MAP reconstructions from PET data.lld:pubmed
pubmed-article:10385287pubmed:affiliationSignal and Image Processing Institute, University of Southern California, Los Angeles 90089-2564, USA. leahy@sipi.usc.edulld:pubmed
pubmed-article:10385287pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:10385287pubmed:publicationTypeResearch Support, U.S. Gov't, P.H.S.lld:pubmed
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