目的 :评价CT血管造影 (CTA)、CT仿真内窥镜 (CTVE)诊断颈动脉狭窄的价值。材料与方法 :9例 18支颈动脉行CTA、CTVE、MRA、DUS检查 ,3例颈动脉重度狭窄者行颈动脉内膜切除术。CTA :螺旋CT扫描 ,层厚 3mm ,螺距 1 0。最大密度投影 (MIP)及遮盖表面显示法 (SSD) 3D血管重建。CTVE :导航系统行颈动脉CTVE成像。结果 :颈动脉轻度狭窄 6支 ,中度狭窄 3支 ,重度狭窄 4支 ,5支正常。显示斑块、附壁血栓 13支。 8支颈动脉与DSA对照 7支相符。 3例手术所见与CTA对比一致性较好 ,术后狭窄解除 ,斑块消失。结论 :CTA能准确评估血管狭窄程度 ,显示斑块。CTVE能观察狭窄管腔内部形态及斑块 Objective: To evaluate the value of CT angiography (CTA) and CT virtual endoscopy (CTVE) in the diagnosis of carotid artery stenosis. Materials and Methods: CTA, CTVE, MRA and DUS were performed in 9 patients with 18 carotid arteries and 3 patients with severe carotid stenosis underwent carotid endarterectomy. CTA: Spiral CT scan, layer thickness 3mm, pitch 10. Maximum density projection (MIP) and occlusion surface display (SSD) 3D vascular reconstruction. CTVE: Navigation System Carotid CTVE Imaging. Results: Six carotid stenosis, three moderate stenosis, four severe stenosis, five normal. Showing plaque, thrombus thrombosis 13. Eight carotid arteries matched DSA controls. 3 cases of surgical findings and CTA better consistency, postoperative stenosis relieved, plaque disappeared. Conclusion: CTA can accurately assess the degree of vascular stenosis, showing plaques. CTVE can observe the internal morphology of the narrow lumen and plaque