1. From the Department of Radiology, University of Arkansas for Medical Science, Little Rock, Ark, and Department of Radiology, Zagazig University, Zagazig, Egypt (A.S.M.); Departments of Radiology (A.K.A.A., N.E., S.S.) and Surgery (D.D.), University of Alabama at Birmingham, 619 19th St South, Birmingham, AL 35249; Department of Radiology, University of Cairo, Cairo, Egypt (A.K.A.A.); and Department of Radiology...