1. From the Department of Radiology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu 514-8507, Japan (M.T., K.K., H.S.); and Departments of Radiology (M.T., S.M., A.H., R.K.) and Cardiology (K. Iio, K. Ichikawa, D.I.), Matsusaka Municipal Hospital, Matsusaka, Japan.