1. From the Cardiac MR PET CT Program, Department of Radiology and Division of Cardiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA (A.L.F., S.S.S., R.C.C., Q.A.T., U.H., T.J.B., A.T.); Harvard School of Public Health, Boston, MA (A.L.F.); Baptist Cardiac and Vascular Institute, Miami, FL (R.C.C.); the Division of Cardiology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA (Q.A.T., A.T.); Harvard Medical School Wellman Center...