螺旋CT血管造影在腹主动脉瘤诊断中的应用

目的 :评价螺旋 CT血管造影 (SCTA)在腹主动脉瘤诊断中的价值。方法 :13例腹主动脉瘤病人行螺旋 CT增强扫描 ,后进行各种重建 :表面阴影显示 (SSD)、多平面重建 (MPR)、最大密度投影 (MIP)。结果 :SSD明确显示动脉瘤的范围和周围血管的关系 ;MPR对瘤体内附壁血栓范围的显示较佳 ;而 MIP对瘤壁的钙化及对管腔各段的精确测量颇有价值。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 ,可取代 DSA对腹主动脉瘤的诊断

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

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 13 patients.Different axial reconstructed images were used to create maximum intensity projection(MIP),multiple planar reconstruction(MPR)and shaded surface display(SSD),comparison with operation and DSA.Results:In 13 patients,the extent of aneurysm and the relationship between aneurysm and arterial branches were definitly showed by SSD;MPR was useful to determine the extent of intraluminal thrombus,the calcification of aneurysm and exact measurement of each part of lumen were better depicted by MIP.Conclusion:The techniqe of spiral CT angiography is simple and safe.SCTA is helpful in diagnosis and guiding surgery of abdominal aortic aneurysm,so SCTA can be used as a substitute of DSA.