1. Department of Radiology, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul 03080, Republic of Korea.
2. Department of Radiology, Seoul National University College of Medicine, Seoul, Republic of Korea.
3. Department of Radiology, Hallym University Sacred Heart Hospital, Anyang-si, Republic of Korea.
4. Department of Surgery, Seoul National University Hospital, Seoul, Republic of Korea.
5. Department of Pathology, Seoul National University Hospital, Seoul, Republic of Korea.
6. Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Republic of Korea.