title: Encephalopathic cerebrovascular steal: dynamic CT of arteriovenous malformations.
abstract: Arteriovenous malformations and the clinical symptoms they engender are due in large part to the cerebrovascular steal intimately associated with these lesions. Intravenous dynamic computed tomography was utilized in a series of 10 patients harboring cranial vascular malformations of varying size and location in an effort to further elucidate the pathophysiology and extent of the arteriovenous shunt in pre-hemorrhagic (8 subjects) and post-hemorrhagic (2 subjects) clinical situations. Perfusion abnormalities were identified locally as well as distant from the nidus of the lesion, both intra- and extra-axially. The technique of dynamic computed tomography in this study group confirms past observations regarding the steal phenomenon and reveals aberrant perfusion states which were previously unknown.
authors.affiliation: Neuroradiology Section, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia.
authors.forename: J R
authors.initials: JR
authors.lastname: Jinkins
mesh_terms: D002560:Cerebrovascular Circulation; D002561:Cerebrovascular Disorders / Q000000981:diagnostic imaging*; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000000981:diagnostic imaging* / Q000503:physiopathology; D014057:Tomography, X-Ray Computed / Q000379:methods*