1. Department of Cardiovascular Surgery, Hakodate Goryoukaku Hospital, Hokkaido, Japan
2. Department of Cardiovascular Surgery, Tokyo Bay Urayasu Ichikawa Medical Center, Tokyo, Japan
3. Innovation Lab, Teikyo University Okinaga Research Institute, Tokyo, Japan
4. Division of Clinical Radiology Services, Hakodate Goryoukaku Hospital, Hokkaido, Japan