1. Department of Radiology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, P.R. China.
2. Key Laboratory of Molecular Imaging, Chinese Academy of Science, Beijing, P.R. China.
3. Department of Ultrasound, Guangdong Provincial People's Hospital, Academy of Medical Sciences, Guangzhou, Guangdong, P.R. China.
4. Information Centre, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, P.R. China.
5. School of Statistics and Management, Shanghai University of Finance and Economics, Shanghai, P.R. China.
6. Department of Radiology, Guangdong Provincial People's Hospital, Academy of Medical Sciences, Guangzhou, Guangdong, P.R. China.