Detection of vertebrobasilar intracranial stenoses: transcranial Doppler sonography versus angiography

Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine
J M de BrayP Lhoste

Abstract

Vertebrobasilar intracranial stenoses seem to carry a higher risk of brain stem ischemia than proximal vertebral artery stenoses. Our aim was to assess the value of transcranial Doppler sonography versus angiography in detecting and quantifying these intracranial stenoses. All consecutive patients who underwent transcranial Doppler sonography prior to angiography from 1989 to 1994 and whose sonograms showed a stenosis of greater than 50% of one vertebral artery (21 cases) or of the basilar artery (eight cases) were included in the study. These patients were compared with 60 other consecutive stroke patients studied via transcranial Doppler sonography prior to normal vertebrobasilar angiography The transcranial Doppler sonographic criteria for stenosis were a peak systolic frequency shift greater than 2 KHz. A tight stenosis was identified by this pattern combined with direct and reverse low frequencies of high spectrum energy. The sensitivity of transcranial Doppler sonography using a peak systolic frequency shift in diagnosing stenoses reached 80% and its specificity was 97% if only atheromatous stenoses were considered. The main diagnostic failures concerned bilateral stenoses or contralateral occlusion, tandem lesions, and u...Continue Reading

Citations

May 17, 2008·Journal of Neuroimaging : Official Journal of the American Society of Neuroimaging·Yohei TateishiKatsumi Eguchi
Oct 17, 2012·Medizinische Klinik, Intensivmedizin und Notfallmedizin·J U HarrerF Schlachetzki
Jun 1, 2006·Der Nervenarzt·G Schulte-Altedorneburg, H Brückmann
Feb 25, 2011·Neurosurgery·Thomas GeeraertsBernard Vigué
Feb 5, 2013·Current Treatment Options in Cardiovascular Medicine·Aaron StaymanRishi Gupta

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