[1] Hokkaido Univ Hosp, Dept Diagnost & Intervent Radiol, Sapporo, Hokkaido, Japan
[2] Jichi Med Univ, Saitama Med Ctr, Dept Radiol, Saitama, Japan
[3] Hokkaido Univ, Fac Med, Dept Cardiovasc Med, Kita Ku, Kita 15,Nishi 7, Sapporo, Hokkaido 0608638, Japan
[4] Hokkaido Univ, Grad Sch Med, Kita Ku, Kita 15,Nishi 7, Sapporo, Hokkaido 0608638, Japan
[5] Icahn Sch Med Mt Sinai, Cardiovasc Res Ctr, New York, NY 10029 USA
[6] Kyoto Prefectural Univ Med, Dept Radiol, Kyoto, Japan