1Department of Radiology, Second Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China, People's Republic, Wenzhou, China, People's Republic of, 2Department of Radiology, Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China, People's Republic of China, Chengdu, China, People's Republic of