Basilar Artery and Vertigo

Abstract

Our goal was to identify by magnetic resonance angiography the specific vascular abnormalities of the basilar artery that can be related to hypoperfusion disorders and produce symptoms of vertebrobasilar insufficiency. A classification of regional vascular perfusion disorders based on developmental malformations and intrinsic and extrinsic angiopathies was formulated from an analysis of individuals with these disorders. Specific angiographic abnormalities such as tortuosity, stenosis, thrombosis, and dolichoectasia were identified in subjects with vestibulocerebellar dysfunction. Charts and radiographic images were examined with respect to the history, physical evidence, and vascular configuration, and the data were integrated for comprehensive analysis. We found that abnormalities identified by magnetic resonance angiography could be correlated with symptoms due to vascular insufficiency. Cases are presented that document the developmental and acquired arterial disorders that may be considered the etiologic factors for regional perfusion deficits.