title: AIUM Practice Parameter for the Performance of an Ultrasound Examination of the Extracranial Cerebrovascular System.
mesh_terms: D001921:Brain / Q000098:blood supply* / Q000000981:diagnostic imaging*; D002561:Cerebrovascular Disorders / Q000000981:diagnostic imaging*; D006801:Humans; D012955:Societies, Medical; D014463:Ultrasonography / Q000379:methods*; D014481:United States