1. School of Zhang Jian, Nantong University, Nantong, China
2. College of Mathematics and Statistics, Chongqing Jiaotong University, Chongqing, China
3. Department of Radiology, Rugao Jian’an Hospital, Nantong, China
4. Shanghai Universal Medical Imaging Diagnostic Center, Shanghai, China
5. Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China