1. Section of Arrhythmia, Division of Cardiovascular Medicine, Department of Internal Medicine Kobe University Graduate School of Medicine Kobe Japan
2. Division of Radiology, Center for Radiology and Radiation Oncology Kobe University Hospital Kobe Japan
3. Department of Radiology Kobe University Graduate School of Medicine Kobe Japan
4. Department of Medical Informatics and Biomedical Engineering Shiga University of Medical Science Otsu Japan