1. From the Department of Radiology and Imaging Sciences, Emory University School of Medicine, 1364 Clifton Rd NE, Atlanta, GA 30322 (P.K.M., D.A.B., P.A.H., J.P., C.C.M.); Department of Clinical Imaging, Hamad Medical Corporation, Doha, Qatar (A.S.A.); and Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (A.C., H.G., F.H.M.).