title: Transcranial Doppler ultrasound.
abstract: Transcranial Doppler ultrasound allows measurements of blood flow velocity to be made from the basal intracerebral vessels. The major advantages of transcranial Doppler ultrasound are that it is non-invasive, relatively cheap, can be performed with portable machines, allows monitoring for prolonged periods, and has a high temporal resolution making it ideal for studying dynamic cerebrovascular responses. In addition it has recently been demonstrated that it can be used to detect circulating cerebral emboli; these cannot be detected by any other currently available imaging modality.
authors.affiliation: Department of Clinical Neurosciences, Guy's Kings and St Thomas' School of Medicine, London, UK.
authors.forename: H S
authors.initials: HS
authors.lastname: Markus
mesh_terms: D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging; D002539:Cerebral Arterial Diseases / Q000000981:diagnostic imaging; D002560:Cerebrovascular Circulation; D006801:Humans; D020766:Intracranial Embolism / Q000000981:diagnostic imaging; D020521:Stroke / Q000000981:diagnostic imaging*; D017585:Ultrasonography, Doppler, Transcranial