OHGIYA, YOSHIMITSU MD; GOKAN, TAKEHIKO MD; MUNECHIKA, HIROTSUGU MD
From the Department of Radiology, Showa University School of Medicine, Tokyo, Japan.
Received March 1, 1999, and accepted for publication, after revision, May 9, 1999.
Reprint requests: Dr. Takehiko Gokan, 2-9-10 Midorigaoka, Meguro-ku, Tokyo, Japan.