A major advantage of hybrid PET/MR systems is the radiation-free high spatial and temporal resolution of cardiac MR imaging that can be used to estimate respiratory and cardiac motion present during PET data acquisition. This information can be incorporated into algorithms to correct for the effects of motion in the PET data to reduce blurring and increase target-to-background ratios of PET hotspots. In this work, we demonstrate a method for respiratory and cardiac motion correction in patients with cardiac sarcoidosis.
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