Carotid artery stenosis: prospective comparison of CT, three-dimensional non-enhanced MR and digital subtraction angiography

Carotid artery stenosis: prospective comparison of CT, three-dimensional non-enhanced MR and digital subtraction angiography

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The aim of this study was a comparison of Dice diagnostic efficacy of non contrast enhanced MR-angiography (MRA) and CT-angiography (CTA) with digital subtraction angiography (DSA) in patients with atherosclerotic lesions of internal carotid arteries.We examined 70 patients with stenosis of carotid arteries.A stenosis degree of more than 50% (assessed by DSA) was considered as hemodynamically significant.Besides neurological survey the examination of extracranial arteries was performed, Cushion whichincluded MRA, CTA and DSA.

In each case we analysed a plane on which a degree of a stenosis was assessed as maximum.To characterize each modality we evaluated sensitivity, specificity and positive predictive value.A coincidence rate for CTA and DSA was 95%, for MRA and DSA 89%.We can conclude that CTA and MRA can be use for an appropriate evaluation of stenosis of interna carotid arteries.