1. Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
2. Department of Radiology, Ajou University School of Medicine, Suwon, Korea.
3. Biomedical Research Center, Asan Institute for Life Sciences, Asan Medical Center, Seoul, Korea.
4. School of Computer Science and Engineering, Soongsil University, Seoul, Korea.
5. Department of Biomedical Engineering, College of Electronics and Information, Kyung Hee University, Yongin, Korea.
6. Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
7. Body Imaging Department of Radiology, Lahey Hospital and Medical Center, Burlington, MA, USA.