Sang-Mi Noh1, Kyung Mi Lee1, Bum Joon Kim2. 1. From the Department of Neurology (S.M.N.), St. Vincent's Hospital, School of Medicine, the Catholic University of Korea, Suwon; and Departments of Radiology (K.M.L.) and Neurology (B.J.K.), Kyung Hee University Hospital, Seoul, Korea. 2. From the Department of Neurology (S.M.N.), St. Vincent's Hospital, School of Medicine, the Catholic University of Korea, Suwon; and Departments of Radiology (K.M.L.) and Neurology (B.J.K.), Kyung Hee University Hospital, Seoul, Korea. medicj80@hanmail.net.