The Diagnosis of Vertebrobasilar Insufficiency Using Transcranial Doppler Ultrasound
نویسندگان
چکیده
منابع مشابه
The Diagnosis of Vertebrobasilar Insufficiency Using Transcranial Doppler Ultrasound
Background. Vertebrobasilar insufficiency (VBI) is a hemodynamic posterior circulation transient ischemic attack (TIA) caused by intermittent vertebral artery occlusion that is induced by a head rotation or extension. VBI may result from large vessel atherosclerotic disease, dissection, cervical compressive lesions, and subclavian steal phenomenon. Diagnostic transcranial Doppler (TCD) of VBI d...
متن کاملTranscranial Doppler ultrasound.
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 ...
متن کاملTranscranial Doppler detection of vertebrobasilar vasospasm following subarachnoid hemorrhage.
BACKGROUND AND PURPOSE Transcranial Doppler sonography is of established value in the detection and monitoring of middle cerebral artery vasospasm. Little information exists on the utility of transcranial Doppler for detection of posterior circulation vasospasm. METHODS Cerebral angiography and conventional hand-held transcranial Doppler sonography were compared to determine sensitivity and s...
متن کاملDynamic transcranial Doppler assessment of positional vertebrobasilar ischemia.
BACKGROUND AND PURPOSE A hemodynamic as opposed to an embolic origin of vertebrobasilar ischemia may be suspected when symptoms are brief and triggered by changes in the position of the head or neck. It may be difficult, and not without risk, to reproduce the symptoms and to prove the short-lived hemodynamic changes during angiography. If transcranial Doppler sonography (TCD) could detect these...
متن کاملDiagnosis of right-to-left shunt with transcranial Doppler and vertebrobasilar recording.
BACKGROUND AND PURPOSE Right-to-left shunt (RLS) due to patent foramen ovale is a well-established risk factor for cryptogenic stroke and is highly prevalent in cases of migraine, cluster headache, and obstructive apnea. It can be diagnosed by gaseous-contrast transcranial Doppler, yet in a small percentage of cases it cannot be done owing to an insufficient temporal window. The aim of the stud...
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ژورنال
عنوان ژورنال: Case Reports in Medicine
سال: 2012
ISSN: 1687-9627,1687-9635
DOI: 10.1155/2012/894913