Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea. tskim.
Address for correspondence: Tae Sung Kim, M.D. Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine 50, Ilwon-dong, Gangnam-gu, Seoul 135-710, Korea. Phone: 822-3410-2518, Fax: 822-3410-2559, kim@samsung.com