A comparison of digital subtraction angiography and noninvasive testing in the diagnosis of cerebrovascular disease

摘要: Abstract Among the 1,892 patients who underwent cerebrovascular digital subtraction angiography at our hospital over past 18 months, there was a subgroup of 34 (65 carotid arteries) for whom noninvasive test results and standard cerebral arteriograms were also available. These reviewed retrospectively ability both methods to detect hemodynamically significant lesions, defined as greater than 50 percent reduction in diameter artery, determined using “gold standard.” Noninvasive tests had sensitivity 81 percent, specificity 95 positive predictive value 92 negative prediction 88 an overall accuracy 89 percent. Digital 84 If four cases stenosis siphon not detected by been considered false-negatives, its would have reduced 72 In with hemispheric ischemia, we found neither necessary nor cost-effective. angiography, on other hand, often provided definitive diagnostic information such if intracranial circulation well extracranial lesion corresponded patients' symptoms. testing safest most cost-effective technique screening asymptomatic bruits, atypical, nonhemispheric symptoms, those undergone endarterectomy. result or equivocal, performed localize responsible exclude occlusion.