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目的 评价双源CT血管成像技术在主动脉壁内血肿诊断中的临床应用价值。材料与方法 对10例主诉急性胸背痛患者行双源 CT血管成像检查，并进行多平面重建(MPR）、曲面重建(CPR）、最大密度投影(MIP)和容积重建(VR)等后处理。结果 双源CT三维图像能清楚显示主动脉壁内血肿的大小、形态、变化及与分支血管的关系等。结论 双源C T血管成像技术能快速、准确的显示主动脉壁内血肿的病理解剖关系，为主动脉壁内血肿的诊断和治疗提供直接影像信息。“,”Objective The clinical value of the evaluation of dual-source CT angiography in the diagnosis of aortic intramural hematoma. Materials and Methods Using the dual-source CT angiography, exam 10 patients with acute chest and back pain, then use the methods of multi-planar reconstruction (MPR), curved planar reconstruction (CPR), maximum intensity projection (MIP) and volume rendering (VR), etc. Results The three-dimensional images of dual-source CT could clearly show the size, shape, change of aortic intramural hematoma, and relationship between branch vessel and aortic intramural hematoma. Conclusion The Dual-source CT angiography can be quickly and accurately display the pathological