1. From the Philippa and Marvin Carsley CMR Centre at the Montreal Heart Institute, Montréal, Canada (M.F., F.M.); Department of Medicine (M.F., F.M.) and Department of Radiology (M.F.), Université de Montréal, Montréal, Canada; and Departments of Cardiac Sciences and Radiology, University of Calgary, Calgary, Canada (M.F.).