摘要
目的分析多层螺旋CT血管成像(MSCTA)在主动脉夹层(AD)诊断中的应用价值。方法回顾性分析48例AD患者的MSCTA影像学资料。图像经多平面重组(MPR)、曲面重建(CPR)、最大密度投影(MIP)、容积再现(VR)技术后处理,由2名经验丰富的影像医师对资料进行评估分析。结果 MSCTA在主动脉夹层(AD)中均能明确诊断撕裂内膜片及真假腔。真腔强化CT值显著高于假腔(P<0.05),真腔多被假腔螺旋状包绕,横断面图像上可见"鸟嘴征"样特征,轴位图像上可见"夹心饼"样特征。图像能明确显示初始破口位置、再破口数目、腔内血栓和主要分支血管受累情况。结论 MSCTA可作为AD诊断和术前评估的可靠影像学检查方法之一,具有无创、快速、安全、准确等优点。
Objective To analyze the application value of multi-slice spiral CT angiography （MSCTA） in diagnosis of aortic dissection （AD）. Methods MSCTA image data of 48 patients with AD were analyzed retrospectively. The images were done on the workstation, reconstruction techniques included multi-planar reconstruction （MPR）, surface reconstruction （CPR）, maximum intensity projection （MIP） and volume rendering techniques（VR）. The datas were analyzed by two experienced images physician. Results Tear intimal flap, true lumen and false lumen in AD patients were clearly diagnosed by MSCTA. CT value of true lumen was higher than false lumen （P 〈 0.05）. True lumen was spiral wrapped by the false lumen. ＂Beak sign＂ feature was clearly showed in cross-sectional images, and ＂Sandwich biscuit＂ feature was clearly showed in axial image. The images could clearly showed the conditions of the initial position of crevasse, crevasse amount, lumen thrombosis and main branches vascular involvement. Conclusion MSCTA is one of the reliable imaging examination method in preoperative evaluation and diagnosis of AD. It is a noninvasive, quick, safe and ac, eurate imaging technique.
出处
《中国当代医药》
2013年第14期120-121,123,共3页
China Modern Medicine
