摘要
目的探讨64层螺旋CT血管成像(CTA)在大动脉炎临床诊断中的应用价值。资料与方法回顾性分析23例临床确诊为大动脉炎患者的64层螺旋CTA特点,图像后处理方法包括多平面重组(MPR)、最大密度投影(MIP)、曲面重组(CPR)、容积再现(VR)及血管分析,充分显示受累血管的部位、范围及程度。结果 23例CTA表现为不同程度的动脉管壁增厚,管腔狭窄或闭塞,管腔狭窄具有向心性的特点,部分伴狭窄后扩张。活动期13例动脉管壁明显增厚,呈环形低密度,增强扫描有强化;而非活动期10例管壁增厚程度轻,平扫管壁密度增高或伴钙化,增强扫描无强化。后处理重建图像结合薄层轴位图像,可直观地显示受累大血管及其分支的部位、狭窄程度或闭塞以及侧支血管形成情况。结论 64层螺旋CT作为一种无创性血管成像技术,能同时显示大动脉炎的管腔情况和管壁改变,对于早期诊断、准确分型、检测疗效及判断预后有重要的指导价值,可作为大动脉炎的首选检查方法。
Objective To evaluate the clinical diagnostic value of 64 slice CT angiography in the Takayasu＇s arteritis.Materials and Methods Twenty-three patients with Takayasu arteritis were retrospectively analyzed.CT angiography and imaging recontruction including multi-planar reformat（MPR）,maximum intensity projection（MIP）,volume rendering（VR）and advanced vessel analysis（AVA）were performed by GE 64 MSCT.Results 64 slice CT angiography transverse and reconstructional images clearly depicted the carotid vascular luminal abnormalities,such as stenosis,occlusion,dilation,aneurysm formation,wall thickening and calcification in the aorta and major branches.CTA features of wall-thickening appeared as a concentric wall thickening,low-density ring and enhancement in 23 patients with active disease,while 10 inactive disease showed mild wall thickening and no enhancement after enhancement.Conclusion 64 slice spiral CT angiography is a reliable imaging modality for the detection of Takayasu＇s arteritis.It is useful for early diagnosis because it allows evaluation of wall thickness rather than merely the luminal diameter,which is especially important for prognosis.As a simple,convenient and noninvasive method,it can be used as first choice in diagnosing Takayasu＇s arteritis.
出处
《临床放射学杂志》
CSCD
北大核心
2010年第12期1625-1628,共4页
Journal of Clinical Radiology
