title: The Gibraltar sign.
authors: University of Arizona Health Science Center, Tucson, USA.
authors: C L
authors: CL
authors: Wixon
authors: J J
authors: JJ
authors: Devine
authors: J L
authors: JL
authors: Mills
mesh_terms: D000368:Aged; D002343:Carotid Artery, Internal; D016893:Carotid Stenosis / Q000000981:diagnostic imaging* / Q000601:surgery; D002533:Cerebral Angiography; D003362:Cost-Benefit Analysis; D016894:Endarterectomy, Carotid; D005260:Female; D006801:Humans; D018810:Magnetic Resonance Angiography; D008403:Mass Screening / Q000191:economics / Q000379:methods / Q000592:standards; D015203:Reproducibility of Results; D018616:Ultrasonography, Doppler, Duplex / Q000191:economics / Q000379:methods* / Q000592:standards