1. Department of Radiation Oncology, Zhejiang Cancer Hospital, Hangzhou 310022, China
2. Radiobiology Research Unit Key Laboratory of Radiation Oncology of Zhejiang Province, Hangzhou 310022, China
3. Department of Breast Surgery, Zhejiang Cancer Hospital, Hangzhou 310022, China
4. Department of Physics, Zhejiang Cancer Hospital, Hangzhou 310022, China
5. Department of Radiology, Fukui Red Cross Hospital, Fukui 918-8501, Japan
6. Department of Digital Earth, Institute of Remote Sensing and Digital Earth, CAS, Beijing 100101, China