Is duplex ultrasound a reliable method for evaluating vertebral artery stenosis?

Introduction: Strokes generating from the posterior cerebral circulation represent nearly 25% from the ischaemic acute neurological events and vertebrobasilar insufficiency is a neurologic disorder affecting an increased number of patients. Our study aimed to asses the reliability of doppler ultrasound (DUS) in diagnosing and quantifying vertebral artery stenosis. Method: A number of 42 patients with clinical evidence of posterior cerebral stroke or vertebrobasilar insufficiency were subject of a retrospective study. Doppler examination was performed in all cases; comparison was made with CT and/or MRI and when…