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Abstract #1578

Hybrid PET/MRI Dual-Condition Framework for Response Monitoring in Myocardial Infarction

Fayez Habach1,2, Jennifer Barry3, Melissa Larsen3, Marne Jamieson4, Amit Singnurkar5, Michael Laflamme6, and Nilesh Ghugre1,2
1Medical Biophysics, University of Toronto, Toronto, ON, Canada, 2Physical Sciences, Sunnybrook Research Institute, Toronto, ON, Canada, 3Schulich Heart Research Program, Sunnybrook Research Institute, Toronto, ON, Canada, 4Nuclear Medicine, Sunnybrook Health Sciences Centre, Toronto, ON, Canada, 5Medical Imaging, Sunnybrook Health Sciences Centre, Toronto, ON, Canada, 6Mcewen Stem Cell Institute, University Health Network, Toronto, ON, Canada

Synopsis

Hybrid PET/MRI is a promising tool that can characterize both metabolic and structural information and has been used extensively in the context of MI-related heart failure. We propose a novel dual-condition protocol that can be used to characterize metabolic state of cardiac tissue in vivo following MI, under different substrate conditions. Our results show significant metabolic changes under fasting and glucose loading conditions, and further longitudinal differences in MI-related metabolic remodeling within both the infarct zone and surrounding myocardium. This framework has potential to be used in testing therapeutic efficacy following MI in both preclinical and clinical contexts.

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