1. Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
2. Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, Korea.
3. Department of Radiology, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
4. Department of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
5. Department of Radiology, Seoul National University Hospital, Seoul, Korea.
6. Department of Radiology, Seoul National University College of Medicine, Seoul, Korea.
7. Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Korea.