NDLI: Fully 3 D Uniform Resolution Transmission microPET Image Reconstruction

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Fully 3 D Uniform Resolution Transmission microPET Image Reconstruction

Content Provider	Semantic Scholar
Author	Bai, Bing Chow, Patrick L. Chatziioannou, Arion Leahy, Richard M.
Copyright Year	2001
Abstract	MAP (maximum a posteriori) reconstructions of transmission images produce more accurate ACFs (attenuation correction factors) than smoothed division of blank and transmission scans and analytical methods. Also, for highly speciÞc tracers, transmission images can provide useful anatomical cues for use in localizing structures and image coregistration. The resolution of MAP images reconstructed with a spatially invariant smoothing prior is known to be nonuniform. Spatially variant smoothing parameters are used here to achieve uniform resolution throughout the transmission image. We also investigate the relationship between resolution and the global smoothing parameter through computer simulations. The resulting calibration curve can be used to select the smoothing parameter to achieve a desired spatial resolution. The tractability and feasibility of our method is demonstrated through an application to phantom transmission data collected using a Concorde P4 microPET system.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://neuroimage.usc.edu/paperspdf/bing_fully3d_01239598.pdf
Language	English
Access Restriction	Open
Subject Keyword	Attenuation Correction Calibration Computer simulation Concorde TSP Solver Image registration Image resolution Imaging phantom Iterative reconstruction Map Phantoms, Imaging Population Parameter Scanning Smoothing (statistical technique) Tracer
Content Type	Text
Resource Type	Article

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