1. Department of Radiology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.
2. Department of Evidence-Based Medicine, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.
3. Department of PET/CT, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Rd, Jinan, Shandong 250117, China.