1 Institute of Biomedical Engineering, Chinese Academy of Medical Science & Peking Union Medical College; Logistics University of Chinese People's Armed Police Forces, Tianjin, China Department of Neurosurgery, Affiliated Hospital of Logistics University of Chinese People's Armed Police Forces, Tianjin, China State Key Laboratory of Precision Measurement Technology and Instruments, Tianjin University, Tianjin, China State Key Laboratory of Precision Measurement Technology and Instruments, Tianjin University, Tianjin, China Department of Radiotherapy of the Tianjin General Hospital, Tianjin, China State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China Institute of Biomedical Engineering, Chinese Academy of Medical Science & Peking Union Medical College Tech, Tianjin, China.