1. Department of Radiology, The Third People's Hospital of Linyi, Linyi, Shandong 276023, P.R. China
2. Department of Special Inspection, The Third People's Hospital of Linyi, Linyi, Shandong 276023, P.R. China
3. Department of Oncology, The Third People's Hospital of Linyi, Linyi, Shandong 276023, P.R. China