多层螺旋CT血管造影在主动脉夹层诊断中的价值

The Clinical of Multi-slice Spiral CT Angiography in the Diagnosis of Aortic Dissections

目的:探讨多层螺旋CT血管造影(MSCTA)在主动脉夹层诊断中的价值。材料与方法:回顾性分析我院经MSCTA诊断并由手术或临床证实的23例主动脉夹层的表现。全部病例均采用了多平面重建(MPR)、最大密度投影(M IP)、曲面重建(CPR)、容积再现(VR)及仿真内窥镜(VE)等后处理技术。结果:23例中,按DeBakey分型Ⅰ型4例,Ⅱ型3例,Ⅲ型16例,其中5例在行血管腔内隔绝术后进行了MSCTA复查,对主动脉夹层的诊断应用原始横断面图像及重建图像可清楚显示真假腔、内膜瓣、破口处、夹层旋转方向、内膜钙化、血栓形成及主动脉主要分支受累情况等。结论:MSCTA是诊断主动脉夹层安全、快速、有效、无创的方法,对临床制定治疗方案、观察术后疗效及随防有重要应用价值。

Purpose：To study the values of multi-slice spiral CT angiography（MSCTA）in diagnosing aortic dissections.Materials and Methods：It were analyged retrospectively by diagnoses of MSCTA operation and clinic for 23 cases.The data of all patient were recontructed with technigues including multiple plane reformation（MPR）,maximum intensity projection（MIP）,curved planar reformation（CPR）,Volume rendering（VR）and virtual intravascular emtuscope（VE）.Results：According to DeBaKey＇s classification,there were DeBaKey type Ⅰ For 4 cases;type Ⅱfor 3;type Ⅲ for 16 in 23 cases.On axial and reformation image,the true and false cavities shape angrange,location of rupture,the position of rupture.rotating direction of dissection,the calcified innerwall,intraluminal thrombus and the invotved aorta and its branches can be observed.Conclusion：MSCTA is a safe,quick effective,hurtless,of important clinical value in tretement,after operation of aortic dissection follow up.