【摘要】 目的　将CTA与DSA对脑血管病变的检出进行对照 ,观察CTA在脑血管病变检出方面的价值。方法　选择自 1999-0 3～ 2 0 0 0 -0 82 0例脑血管病变患者行CTA和DSA检查 ,将CTA与DSA检出情况进行对比 ,观察CTA的敏感度和特异度 ,以及它们的符合率。结果　 2 0例患者经CTA检查发现有 17例患者存在血管异常 ,3例患者显示正常 ,存在血管异常的 17例患者共检出 18个脑血管病变 ,包括 6个动脉瘤 ,9个AVM ,2个颈内动脉 -海绵窦瘘 (CCF) ,1个动脉狭窄 ;DSA检查 17例患者存在血管异常 ,3例患者显示正常 ,存在血管异常的 17例患者共检出 19个病变 ,7个动脉瘤 ,8个AVM ,2个动脉狭窄 ,2个CCF。经统计得知 ,CTA检出脑血管病变的敏感度为 90 .6% ,特异度为 95 .2 % ,CTA与DSA的总符合率为 90 .6%。结论　我们认为三维CTA对于脑血管病变的检出 ,具有较高的敏感性和特异性 ,而且操作简单、方便、安全、微创伤性 ,能用于脑血管病变的诊断 ,并有其较高的临床应用价值。尤其是对AVM的检出率很高更多还原

【Abstract】 Objective To assess the value of CTA and DSA in neurovascular diseases.Methods 20 cases with suspected neurovascular disorders who received CTA and DSA examination between March 1999 and August 2000 were retrospectively collected.The sensitivity,specifility and accurate rate of CTA were analysed compared with DSA as gold standard.Results In 20 cases,neurovascular disorders were found in 17 on CTA.18 lesions were detected,including 6 aneurysms,9 arteriovenous malformations(AVM),2 carotid cavernous fistulae(CCFs)and 1 arterial stenosis.By contrast,19 lesions in 17 cases were detected by DSA,including 7 aneurysms,8 AVMs,2 arterial stenoses and 2 CCFs.The sensitivity,specificity and accuracy of CTA in the detection of neurovascular disorders were 90.6%,95.2% and 90.6% respectively.Conclusion 3D-CTA is a new modality with high sensitivity and specificity in the detection of neurovascular disorders.As it can be obtained simply,conveniently and safely with mild injury to the patient,CTA can be used in the diagnosis of neurovascular diseases,especially in the AVMs.更多还原