title: The double outline sign.
authors.affiliation: Radiology Department, Queens Hospital Center, Jamaica, N.Y., USA.
authors.forename: T J
authors.initials: TJ
authors.lastname: Burke
mesh_terms: D002574:Cervical Vertebrae / Q000000981:diagnostic imaging / Q000293:injuries*; D003937:Diagnosis, Differential; D006801:Humans; D008722:Methods; D016103:Spinal Fractures / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed; D014911:Whiplash Injuries / Q000000981:diagnostic imaging