1. From the Departments of Psychiatry (T.M., A.I., H.F., Y.K., K.S., K.N., J.N.) and Radiology (H.Y., K.Y.), Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan; and Department of Diagnostic Radiology and Radiation Oncology, Graduate School of Medicine, Chiba University, Chiba, Japan (H.Y.).