Institution: | 1. Department of Radiology and Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea;2. Department of Cardiothoracic Surgery, Cardiovascular Center, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea;3. Division of Cardiology, Departments of Internal Medicine, Cardiovascular Center, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea |