1. From the Department of Radiology, Ajou University School of Medicine, Suwon, South Korea (S.H.); and Department of Radiology and Research Institute of Radiology (S.H., S.S.L., S.H.C., D.W.K., H.J.P., S.Y.K., S.J.L., Y.M.S.) and Department of Gastroenterology, Liver Center (K.M.K.), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, South Korea.