1. School of Information Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China
2. Laboratory of Controllable Preparation and Application of Nanomaterials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
3. Department of Radiology, First Hospital of China Medical University, Shenyang 110001, China
4. Department of Radiation Oncology, First Clinical Medical School and First Hospital of Shanxi Medical University, Taiyiuan 030001, China
5. CAS Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Beijing 100190, China