摘要
目的评价多层螺旋CT血管造影技术在夹层动脉瘤诊断中的临床应用价值。方法12例夹层动脉瘤病例行多层螺旋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DebakeyI型4例,Ⅱ型3例,Ⅲ型5例。夹层动脉瘤的特异征象主要是分离移位内膜、真假腔的存在,主动脉增厚钙化、主动脉不规则扩张、附壁血栓是非特异性征象。二维图像(多平面重建及曲面重建)能较好地显示病变范围、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,模拟内镜可以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准确、有效诊断夹层动脉瘤的检查方法。
Objective To evaluate multi-slice spiral CT (MSCT) angiography in the diagnosis of aortic dissection.?Methods 12 cases suspected of aortic dissection were examined by MSCT. Two dimensional and three dimensional imaging methods were used.?Results 4 Debakey type Ⅰ cases,3 typeⅡ cases and 5 typeⅢ cases of aortic dissection were found to show specific signs, i.e. intimal flaps and true and flase double aortic lumen.The non-specific signs included thicking and calcification of the aortic wall,irregular aortic dilation and intraluminal thrombus.Two dimensional imaging (MPVR and CRI) could clearly show the extent, size and details of lesions.The space relationship and calcifation of aorta were displayed in three dimensional imaging (SSD,VR and MIP). The presence of intimal flap and reentry of dissection could be clarified by CTVE.?Conclusions Associated with image post processing,MSCT angiography is an effective method for diagnosing aortic dissection.
出处
《徐州医学院学报》
CAS
2005年第1期77-79,共3页
Acta Academiae Medicinae Xuzhou
