多层螺旋CT主动脉血管造影在主动脉夹层动脉瘤的临床应用

目的探讨多层螺旋CT血管造影(MSCTA)及其三维重建在主动脉夹层动脉瘤的CT表现及诊断价值。方法收集72例行主动脉64排螺旋CT增强扫描的主动脉夹层动脉瘤病例,将MSCTA原始数据在ADW4.4工作站进行最大密度投影(MIP)、多平面重建(MPR)、曲面重建(CPR)、容积再现(VR)的主动脉血管重建处理,并将获取的资料进行综合分析,完成诊断。结果全部病例均很好地显示了主动脉全程及其主要分支血管,清晰地显示夹层动脉瘤的部位、范围、真腔、假腔、内膜片等,其中主动脉壁增厚钙化51例及附壁血栓39例也清晰显示。6例主动脉夹层患者经内支架置入术后复查,其支架位置、形态、膨胀程度及真假腔情况也得到满意显示。结论 MSCTA可清晰地显示主动脉夹层及主要分支血管的改变,为临床选择合理的治疗提供有价值的依据,是诊断夹层动脉瘤有效的检查方法,具有较高的临床应用价值。

The clinical application of multislice spiral CT angiography in dissecting aneurysm of aorta

Objective To investigate the CT Manifestations and diagnostic value of multislice spiral CT angiography（MSCTA） and its 3D-restruction in dissecting aneurysm of aorta.Methods 64-slice spiral CT enhancing scan of dissecting aneurysm of aorta was performed in 72 patients,and the data was transferred to ADW4.4 workstation for aortic vascular reconstruction image post processing including the maximum density projection（MIP）,multiple planar reconstruction（MPR）,curved planar reconstruction（CPR） and volume rendering（VR）,the data of MSCTA were done and analyzed.Results The whole aorta and branches in 72 patients were displayed well by MSCTA.The location,extend,true lumen,false lumen and intimal flap of dissecting aneurysm were showed in all patients satisfactorily.In the 72 cases,thickening and calcification of the aortic wall were 51cases,intraluminal thrombus were 39cases.The results of postoperative review in 6 cases of patients with aortic stent placement dissection revealed that the location and shape of stent,the dilatation degree,the true and false lumen were also displayed satisfactorily.Conclusion MSCTA can clearly display the aortic dissecting aneutysm and its branches,and is a valuable tool in the assessment and diagnosis of aortic dissections,it has important clinical application value.