多层螺旋CT血管造影技术在胸部大血管急症中的应用

目的评价多层螺旋CT血管造影技术在胸部大血管急诊病例诊断中的临床应用价值。方法25例胸部大血管急症病例行多层螺旋CT血管造影检查,结合二维和三维重建技术进行图像分析。结果中央型肺栓塞10例,夹层动脉瘤12例,动脉瘤2例,多发大动脉炎合并肾动脉狭窄1例。二维图像(多平面容积重建及曲面重建)较好显示病变范围、大小及病变细节,而三维重建(最大密度投影、表面遮盖成像和容积重建)良好显示管壁钙化情况和病变空间关系。仿真内窥镜可以判断肺动脉内栓子与血管壁关系、显示夹层动脉瘤的内膜破口情况、内膜片与血管关系。结论多层螺旋CT血管造影结合影像后处理技术是一种有效的诊断胸部大血管急诊的检查方法。

Application of Multi - slice Spiral CT Angiography in Thoracic Vascular Emergency

Objective To evaluate the value of multi-slice spiral CT (MSCT) angiography in diagnosis of thoracic vascularemergency.Methods 25 cases suspected of thoracic vascular emergency were examined with MSCT. Two dimensional and three dimensionalimaging methods were used. Results Central pulmonary embolism 10 cases, aortic dissection 12 cases,aneurysm 2 cases and takayasuarteritis with stricture of kidney artery were found by two dimensional imaging(MPVR,CPR),and the extent, size and details of lesions couldbe showed well. The space relationship and calcifation of aorta were displayed in three dimensional imaging(SSD,VR,MIP). Therelationship between intraluminal embolism and the wall of pulmonary artery, as well as intimal flap and reentry of dissection could bevealuated by CTVE.Conclusion Associated with imaging post processing,MSCT angiography is an effective method in diagnosis of thoracic vascular emergency.