1. From the Division of Hypertension and Nephrology (Y.I., H.K., S.-i.H., M.K., F.Y., S.N., Y.K.), and Department of Radiology (T.F.), Department of Medicine, National Cerebral and Cardiovascular Center, Osaka, Japan; Division of Health Science, Osaka University Graduate School of Medicine, Japan (K.K.); Department of Internal Medicine, Kawasaki Hospital, Kawasaki Medical School, Okayama, Japan (T.H.); and Department of Medical Technology, Teikyo University Fukuoka, Japan (Y.K.).