1. School of Physics and Electronics
2. Shandong Normal University
3. Jinan
4. People’s Republic of China
5. College of Information Science and Engineering
6. Shandong University
7. Jinan 250100
8. Department of Radiation Oncology
9. Key Laboratory of Radiation Oncology of Shandong Province
10. Shandong Cancer Hospital and Institute
11. Jinan 250117