1. From the Department of Imaging and the Department of Medicine, Division of Cardiology (A.A., R.H., S.W.H., J.D.F., I.C., X.K., L.D.Y., L.T., G.G., D.S.B.), Cedars-Sinai Medical Center (P.S.), Los Angeles, Calif; and the Division of Cardiology (A.A.), William Beaumont Hospital, Royal Oak, Mich.