1. Medical Imaging Department, Weifang Medical University, Weifang, Shandong, PR China
2. Department of Radiology, WeiFang Traditional Chinese Hospital, Weifang, Shandong, PR China
3. The First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, PR China
4. Department of Computer Science, Shanghai University, People's Republic of China