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Clinical findings and the correct assessment of the morphology and degree of stenosis is a decidant point in the conservative and operative therapy of carotid stenosis. Diagnosis should be reached fast, sure and cost-effective with a high sensitivity and specifity.One hundred and fifty-nine patients with cerebrovascular disease underwent digital subtraction angiography (DSA), color flow Doppler (CFD) and CT angiography (CTA).We detected 213 severe (> 80%) stenoses (ICA: 151, ECA: 45, CCA: 17), and 32 occlusions (ICA: 27, ECA: 3, CCA: 2). The 3 methods showed all occlusions (sensitivity: 100%). D SA failed in 7 stenosis (sensitivity 96.7%), CTA in 3 cases (98.6%), CFD in 19 stenoses (sensitivity: 92.2%).Morphology of plaques were detected by CTA, which was superior to CFD or DSA. Ulcerations were demonstrated more exactly by CFD and DSA; CTA needs the reformation. Most questions can be answered by CFD, special information should be got by CTA and DSA.