CTA综合评价颈动脉鞘占位病变与颈动脉的关系

Evaluation of the relationship between the space-occupying lesions and the carotid atery with CT Angiography

目的 :探讨颈动脉多层螺旋CT血管造影 (CTA)和多种后处理技术在分析颈动脉鞘占位病变与颈动脉关系中的应用价值。方法 :回顾分析 3 0例颈动脉鞘肿块患者的CTA轴位和MPR ,SSD ,MIP ,VR ,VE(仿真内镜 )等后处理图像 ,根据肿瘤与血管交角 (瘤 管角 )、瘤 管脂肪间隙、颈动脉狭窄的程度、血管壁光滑度等 4项指标评价颈动脉鞘占位与颈动脉的关系。结果 :CTA后处理共获得 60支血管 ,有 10支颈动脉受侵犯 ,9支为恶性肿瘤所致 ,1例为脓肿所致。将轴位和后处理图像相结合 ,综合运用 4项指标有助于显示颈动脉鞘占位与颈部血管关系 ,可帮助判断颈动脉受侵与否。结论 :CTA后处理方法综合运用能良好显示颈动脉鞘占位与颈部血管关系 ,有助于术前判断占位是否侵犯颈动脉 ,具有重要的临床价值。

Objective:To study the value of CT angiography and comprehensive postprocessing techniques in evaluating the relationship between space occupying lesions in the carotid space and extracranial carotid artery.Methods:CT angio graphy was performed in 30 patients with space occupying lesions in the carotid space,and rendered by five postprocessing techniques: MPR,SSD,MIP,VR,and VE. Then we evaluated the relationship between the space occupying lesions and the carotid atery according to four criterions:angle between the mass and the artery,fat between the mass and artery,degree of narrowing of the artery and the smoothness of the arterial wall.Results:CT angiography of extracranial carotid artery demonstrated 60 vessels,10 of them were involved including 9 malnignant tumors and 1 abscess. Application of combined reconstruction techniques could demonstrate the relationship between space occupying lesions in the carotid space and the carotid artery,and estimate whether the carotid atery was involved by the cancer.Conclusion:Application of combined postprocessing techniques with CT angiography can demonstrate the relationship between space occupying lesions in the carotid space and the carotid artery. It is valueable to estimate whether the carotid atery is involved before the surgical opperation.