1. Department of Cardiovascular Medicine Graduate School of Medical Science, Kyoto Prefectural University of Medicine 465 Kajii‐cho, Kawaramachi‐Hirokoji, Kamigyo‐ku Kyoto 602‐8566 Japan
2. Department of Radiology Kyoto Prefectural University of Medicine 465 Kajii‐cho, Kawaramachi‐Hirokoji, Kamigyo‐ku Kyoto 602‐8566 Japan
3. Department of Cardiovascular Surgery Kyoto Prefectural University of Medicine 465 Kajii‐cho, Kawaramachi‐Hirokoji, Kamigyo‐ku Kyoto 602‐8566 Japan