螺旋CT血管造影对主动脉瘤及主动脉夹层的诊断价值

目的评价螺旋CT血管造影（SCTA）在主动脉瘤及主动脉夹层诊断中的应用价值。方法对32例临床怀疑主动脉病变的患者行SCTA检查，并进行二维和三维重建，重建方法包括最大密度投影（MIP）、多平面重建（MPR）、表面遮盖显示（SSD）、容积再现（VR）。结果32例中，正常者10例，主动脉瘤7例，假性动脉瘤2例，主动脉夹层13例。SCTA均能良好显示主动脉瘤体、附壁血栓及钙化斑块和主动脉夹层的真假腔、撕裂内膜及破口，并能显示主动脉与周围器官的毗邻关系。结论SCTA在主动脉瘤及主动脉夹层上的诊断具有很高的临床价值，已基本代替传统的血管造影，对治疗方案的制订及术后疗效评估具有重要的价值。

THE DIAGNOSTIC VALUE OF SPIRAL CT ANGIOGRAPHY OF THE AORTIC ANEURYSM AND THE AORTIC DISSECTION

Objective To Evaluate the diagnostic value of spiral CT angiography of the aortic aneurysm and the aortic dissection. Methods 32 cases with clinical suspicion of the aortic lesions were scanned with spiral CT angiography（SCTA） and conducted by two- dimensional and three -dimensional reconstruction including maximum intensity projection（MIP） , multi - planar reconstruction（MPR） , surface shaded display（SSD） and volume rendering （VR）. Results 7 cases of aortic aneurysm, 2 of pseudoaneurysm, 13 of aortic dissection and 10 of normal were found within 32 patients. SCTA can clearly show the body of the aortic aneurysm, mural thrombus, calcification of plaques, the true or false cavities of the aortic dissection, tearing endometrium and lacerations, and the relationship between the aorta and the surrounding organs. Conclusion SCTA is of high value in the clinical diagnosis of the aortic aneurysm and the aortic dissection. It helps a lot on the treatment procedure and postoperative assessment of the diseases so that it has basically replaced the traditional angiography.