1. Central Research Laboratory, Hamamatsu Photonics K.K., 5000, Hirakuchi, Hamakita-ku, Hamamatsu City, Shizuoka Pref., 434-8601, Japan
2. Department of Breast Surgery, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu City, Shizuoka Pref., 431-3192, Japan
3. Department of Radiology, Hamamatsu, University School of Medicine, 1-20-1, Handayama, Higashi-ku, Hamamatsu City, Shizuoka Pref., 431-3192, Japan