1. Jinan University, Guangzhou, 510632, PR China
2. Department of Radiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of
China, Anhui Provincial Cancer Hospital, Hefei, Anhui, 230031, China
3. Department of Radiology, Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yatsen
University, Guangzhou, Guangdong, 510655, China
4. Sun Yat-sen University Department of Radiology Guangzhou China