title: The reversal sign.
authors.affiliation: Division of Neuroradiology, Department of Radiology, Vancouver General Hospital, Vancouver, British Columbia, Canada. eoinkav@yahoo.com
authors.forename: Eoin C
authors.initials: EC
authors.lastname: Kavanagh
mesh_terms: D001921:Brain / Q000000981:diagnostic imaging*; D001927:Brain Diseases / Q000000981:diagnostic imaging*; D006801:Humans; D014057:Tomography, X-Ray Computed