1. Department of Medical Imaging, Affiliated Hospital of Jining Medical University, Jining, Shandong 272000, P.R. China
2. Department of Radiology, People's Hospital of Rizhao, Rizhao, Shandong 276800, P.R. China
3. Department of Medical Records, The People's Hospital of Zhangqiu Area, Jinan, Shandong 250200, P.R. China
4. Department of Neurology, The People's Hospital of Zhangqiu Area, Jinan, Shandong 250200, P.R. China
5. Ward 1, Department of Oncology, People's Hospital of Rizhao, Rizhao, Shandong 276800, P.R. China