1. Cardiovascular Center, Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital , 2-9 Myoken-cho, Showa-ku, Nagoya, Aichi 466-8650 , Japan
2. Department Cardiology, Nagoya University Graduate School of Medicine , 65 Tsurumai-cho, showa-ku, Nagoya, Aichi 466-8560 , Japan
3. Department of Cardiology, Sakakibara Heart Institute , 3-16-1 Asahi-cho, Fuchu, Tokyo 183-0003 , Japan
4. Division of Nuclear Medicine, Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital , 2-9 Myoken-cho, Sowa-ku, Nagoya, Aichi 466-8650 , Japan
5. Department of Radiology, Nagoya University Hospital , 65 Tsurumai-cho, showa-ku, Nagoya, Aichi 466-8560 , Japan