CT-A血管成像在颈部血管病中的诊断价值

目的探讨CT-A血管成像在颈部血管病变中的作用。方法对20例临床高度怀疑有颈部血管狭窄的病例进行了颈部的CT-A检查，临床为颈动脉系统缺血表现的6例，表现为椎-基底动脉系统缺血的14例，采用GE（Hispeed NX／i）双层螺旋CT设备进行CT-A三个重要步骤和图像后处理重建技术A、MIP（最大密度投影）B、SSD（表面遮盖法）C、MPR＆Curve（多平面重建和曲面重建）D、CTVE（血管内镜）进行分析。结果经CT-A检查发现颈动脉系统狭窄和钙化斑块的4例，主要发生在颈内动脉的起始段，钙化斑块主要分布在颈动脉分叉处；2例经CTVE发现分叉处血管内壁的钙化斑，椎动脉狭窄的12例，有2例椎动脉仅表现蜿蜒和迂曲，经曲面重建未见狭窄。结论CT-A技术快捷方便、安全无创，可清晰地显示颈部的主要的血管结构。有着良好的临床应用前景。

Diagnostic Application of CT-A for Evaluation of Neck Vessels Diseases

Objective To evaluate CT-A in diagnosing neck vesselss disease.Methodes:20 clinical high suspicion of stenosis of neck vessels were examined with CT angiography .Among them ,6 cases were clinical suspicion of ischemia of carotid artery ,14 cases shown ischemia of vertebral basal system .Using GE(High-speed NX/I) 2 Row spiral CT. analysis with reconstruction techniques(MIP,SSD,MPR & Curve and CTVE) .Results:Among the 20 patients, 4 with stenosis of carotid artery and calcified plaque,mainly in the original part and the calcified plaque mainly located at the bifurcation of carotid artery,2 cases with calcified spot in endovascular wall at bifurcation part were noted by CTVE.12 cases with stenosis of vertebral artery; 2 cases shown zigzagging with circuitous ,no stenosis by CTVE. Conclusion:CT-A is a fast ,easy,safe and non-traumatic technique,it can show the main vessels of neck,with a well foreground of clinical application .