MR-Based Cardiac and Respiratory Motion-Compensation Techniques for PET-MR Imaging

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Cardiac and respiratory motion cause image quality degradation in PET imaging, affecting diagnostic accuracy of the images. Whole-body simultaneous PET-MR scanners allow for using motion information estimated from MR images to correct PET data and produce motion-compensated PET images. This article reviews methods that have been proposed to estimate motion from MR images and different techniques to include this information in PET reconstruction, in order to overcome the problem of cardiac and respiratory motion in PET-MR imaging. MR-based motion correction techniques significantly increase lesion detectability and contrast, and also improve accuracy of uptake values in PET images.

Original languageEnglish
Pages (from-to)179-91
Number of pages13
JournalPET Clinics
Issue number2
Early online date26 Jan 2016
Publication statusPublished - Apr 2016


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