Spatial resolution properties of motion-compensated tomographic image reconstruction methods.
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ABSTRACT:
SUBMITTER: Chun SY
PROVIDER: S-EPMC3389228 | biostudies-literature | 2012 Jul
REPOSITORIES: biostudies-literature
Publications
Spatial resolution properties of motion-compensated tomographic image reconstruction methods.
Chun Se Young SY Fessler Jeffrey A JA
IEEE transactions on medical imaging 20120403 7
Many motion-compensated image reconstruction (MCIR) methods have been proposed to correct for subject motion in medical imaging. MCIR methods incorporate motion models to improve image quality by reducing motion artifacts and noise. This paper analyzes the spatial resolution properties of MCIR methods and shows that nonrigid local motion can lead to nonuniform and anisotropic spatial resolution for conventional quadratic regularizers. This undesirable property is akin to the known effects of int ...[more]
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