1. From the Department of Radiology, Samsung Medical Center, Sungkyunkwan University, 81 Irwon-Ro, Gangnam-Gu, Seoul 06351, Korea (A.Y., K.D.S.); Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, Korea (S.A.C.); and Biomedical Statistics Center, Research Institute for Future Medicine, Samsung Medical Center, Seoul, Korea (S.A.C.).