- "Ostrich sign" indicates bilateral vertebral artery dissectionDavid Z Rose
Department of Neurology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
J Stroke Cerebrovasc Dis 21:903.e1-2. 2012..Because bilateral VADs in axial magnetic resonance angiographic sections stand out like the eyes of an ostrich, and because the fast identification of VADs is so critical, we eponymize this image the "ostrich sign."..