1. From the Department of Radiology, University of Colorado School of Medicine, Anschutz Medical Campus, 12700 E 19th Ave, Mail Stop C278, Aurora, CO 80045 (R.E.H.); Department of Radiology and Comprehensive Cancer Care, Michigan Medicine, University of Michigan, Ann Arbor, Mich (M.A.H.); and Department of Radiology, Baylor Scott & White Medical Center, Temple, Tex (D.L.M.).