Affiliation: | 1. Department of Radiology, Fujian Provincial Cancer Hospital, Fuzhou, Fujian, People's Republic of China;2. Department of Radiology, First Clinical Medical College of Fujian Medical University, Fuzhou, Fujian, People's Republic of China;3. Philips Healthcare, Shanghai, People's Republic of China;4. Philips Healthcare, Hong Kong, People's Republic of China;5. Department of Radiation Oncology, Fujian Provincial Cancer Hospital, Fuzhou, Fujian, People's Republic of China |