1Department of Radiology,Xijing hospital, Xi‘an, China, People's Republic of, 2Department of Radiology,Xijing Hospital, Xi'an, China, People's Republic of, 3Siemens Healthcare, MR Collaborations NE Asia, Beijing, China, People's Republic of, 4Department of Radiology, Department of Radiology, Xijing Hospital, Xi'an, China, People's Republic of