1. From the Noninvasive Cardiovascular Imaging Program, Division of Cardiovascular Medicine, and Radiology, Departments of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA (B.H., Y.-H.J., H.L., S.A., R.S., R.B., M.S., M.J.-H., R.Y.K.); Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital, Linkou and Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan (Y.-H.J.).