螺旋CT血管造影在腹主动脉瘤诊断中的应用

Application of Spiral CT Angiography in the Diagnosis of Abdominal Aortic Aneurysm

目的:评价螺旋CT血管造影在腹主动脉瘤诊断中的价值。方法:回顾性分析30例腹主动脉瘤病人行螺旋CT增强检查后进行各种重建如最大密度投影(MIP)、表面阴影显示(SSD)的临床资料。结果:本组腹主动脉瘤患者均合并附壁血栓,其中10例合并单侧髂总动脉瘤,4例出现动脉瘤破裂。SSD明确显示动脉瘤的范围和周围血管的关系;MIP对瘤壁的钙化及管腔各段可较精确测量。结论:螺旋CT血管造影操作简单、安全,诊断明确,能帮助和指导手术。

Objective： To evaluate the diagnostic value of spiral CT angiography （SCTA） in the assessment of abdominal aortic aneurysm. Methods： Spiral CT of the abdominal aortic aneurysm was performed in 30 cases. Different axial reconstructed images were used to create maximum intensity projection （MIP） and shaded surface display （SSD）. Results： In 30 cases, the extent of aneurysm and the relationship between aneurysm and arterial branches were definitely showed by SSD, the calcification of aneurysm and exact measurement of each part of lumen were better depicted by MIP. Conclusion： The technique of spiral CT angiography is simple and safe. SCTA is helpful in diagnosis and guiding surgery of abdominal aortic aneurysm.