1. Department of Radiology, Eastern Hepatobilliary Surgery Hospital, The Second Military Medical University, No. 225 Changhai Road Yangpu Area, Shanghai 200433, China
2. Department of Radiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
3. Key Laboratory for Biorheological Science and Technology of Ministry of Education (Chongqing University), Chongqing University Cancer Hospital, Chongqing 400044, China