1. Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-Gu, Seoul 05505, Republic of Korea.
2. Department of Radiology, Korea University Guro Hospital, Seoul, Republic of Korea.
3. Department of Cardiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.