1. Canon Inc., Medical Imaging Development Center, 3-30-2, Shimomaruko, Ohta-ku, Tokyo 1468501, JapanbKyoto University, Graduate School of Medicine, Department of Breast Surgery, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto 6068507, Japan
2. Canon Inc., Medical Imaging Development Center, 3-30-2, Shimomaruko, Ohta-ku, Tokyo 1468501, Japan
3. Kyoto University, Graduate School of Medicine, Department of Breast Surgery, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto 6068507, Japan
4. Kyoto University, Graduate School of Medicine, Department of Diagnostic Imaging and Nuclear Medicine, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto 6068507, Japan
5. Kyoto University, Graduate School of Medicine, Department of Human Health Science, 53 Shogoin-Kawaharacho Sakyo-ku, Kyoto 6068507, Japan