1. From the Departments of Radiology (Q.Y., X.D., K.L.), Emergency (J.D.), and Neurosurgery (X.J.), Xuanwu Hospital, Capital Medical University, Beijing, China; Biomedical Imaging Research Institute, Cedars Sinai Medical Center, Los Angeles, CA (Q.Y., Z.F., X.Q., Y.X., C.N., D.L.); and MR Research and Development, Siemens Healthcare, Los Angeles, CA (X.B.).