1. Department of Radiology, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Ave, Wuhan 430022, China.
2. Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China.
3. Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
4. Department of Clinical Science, Philips Healthcare Greater China, Shanghai, China.
5. Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.