1Department of Radiology, Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.
2Phantomics Co, Ltd, Seoul, Republic of Korea.
3Department of Pathology, Ewha Womans University Seoul Hospital, Seoul, Republic of Korea.
4Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.
5Department of Radiology, Research Institute of Radiological Science, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea.
6Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
7Department of Radiology, Dong-A University College of Medicine, Busan, Republic of Korea.
8Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, Calif.