1 Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China.
2 Department of Radiation Oncology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, China.
3 Department of Radiology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China.
4 Department of Radiology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, China.
5 Cheeloo College of Medicine, Shandong University, Jinan, China.
6 Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China. devin813@163.com.
7 Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China. mengxiangjiao@126.com.