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Abstract #2187

Initial Experience with MR-Based Respiratory and Cardiac Motion-Corrected PET/MR Imaging of the Coronary Arteries

Philip M Robson1, MariaGiovanna Trivieri1, Nicolas A Karakatsanis2, Georgios Soultanidis 1, Ronan Abgral3, Marc R Dweck4, Pedro Moreno5, Gianluca Torregrossa5, John D Puskas5, and Zahi A Fayad1

1Icahn School of Medicine at Mount Sinai, New York, NY, United States, 2Weill Cornell Medicine, New York, NY, United States, 3University Hospital of Brest, Brest, France, 4British Heart Foundation Centre for Cardiovascular Science, Edinburgh, United Kingdom, 5Mount Sinai St Luke's Hospital, New York, NY, United States

A major advantage of hybrid PET/MR systems is the radiation-free high spatial and temporal resolution of MR imaging that can be used to estimate cardio-respiratory motion present during PET data acquisition. This information can be incorporated into reconstruction algorithms to correct for motion in the PET data to reduce blurring and increase target-to-background ratios (TBR) of PET hotspots. This may be of particular importance in cardiac imaging where the heart is in constant motion. In this work, we report our initial experience applying cardio-respiratory motion-corrected PET/MR to 18F-sodium fluoride PET/MR imaging of the coronary arteries.

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