1. From the Department of Radiology, Cardiovascular Imaging, Northwestern University, Feinberg School of Medicine, Chicago, IL (A.A.U., K.T., M.W., J.M., J.D.C., M.M., J.C.C.); Cardiovascular MR Research and Development, Siemens Healthcare, Chicago, IL (S.S., S.G.); Department of Cardiology, Northwestern University, Feinberg School of Medicine, Chicago, IL (W.C., R.G.); Bluhm Cardiovascular Institute, Chicago, IL (W.C., R.G.); Heart Transplantation and Mechanical Assistance, Department of Cardiac...