Title: Transcranial Doppler Ultrasound versus Magnetic Resonance Angiography in Hemodynamic Studies of Vertebrobasilar Ischemic Stroke
Abstract: Background: Transcranial Doppler (TCD) ultrasonography is a relatively new technology used to evaluate the intracranial circulation. With TCD ultrasonography blood flow velocity can be evaluated and used to make determinations about intracranial hemodynamics. The combined use of magnetic resonance angiography (MRA) and transcranial Doppler ultrasound may replace the invasive intra-arterial angiographic examination in many patients with suspected macroangiopathy of vertebrobasilar arteries. Objectives: In the present study we tried to test the sensitivity of Transcranial Doppler ultrasound (TCD) & MRA of the brain and to detect hemodynamic changes in arterial system of patients with posterior-circulation strokes and few patients with posterior transient ischemic attacks (TIAs). Methods: Sixty patients (34 males and 26 females) with acute vertebrobasilar ischemic stroke were selected at the first 48 hours from onset in our study beside another ten normal persons, age & sex matched, as a control group. We assessed the baseline stroke severity using the National Institute of Health Stroke Scale (NIHSS) score. All patients were subjected to: TCD & MRA of the brain. Results: The sensitivity of MRA in relation to TCD was (46.5%) & specificity was (100%). Conclusion: We concluded that the sensitivity of TCD was more than MRA in hemodynamic evaluation of vertebrobasilar arterial system. (Egypt J. Neurol. Psychiat. Neurosurg., 2009, 46(2): 357-364)
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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