1. From the Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210002, China (Z.L.Y., Q.Q.N., U.J.S., C.S.Z., Y.E.Z., G.M.L., L.J.Z.); and Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (U.J.S., C.N.D.C., H.L., T.M.D.).