16层螺旋CT在腹主动脉瘤中的诊断应用  

The Diagnosis of Abdominal Aortic Aneurysm with 16-slice Spiral CT

作　　者：曾卫珊[1] 李谷买[1] 

机构地区：[1]广西医科大学第一附属医院放射科,广西南宁530021

出　　处：《实用放射学杂志》2008年第5期631-634,共4页Journal of Practical Radiology

摘　　要：目的探讨16层螺旋CT对腹主动脉瘤的诊断价值。方法对40例腹主动脉瘤患者进行16层螺旋CT扫描,采用多平面重组(MPR)、最大密度投影(MIP)、容积再现(VR)图像重组。结果CT显示腹主动脉呈囊状扩张7例、梭形扩张23例、囊梭形扩张10例。其中多发性腹主动脉瘤3例,并发假性动脉瘤1例。MPR准确显示瘤体的位置、形态、范围及瘤腔内附壁血栓,MIP较好地显示瘤壁或附壁血栓内的钙化,VR以三维形式精确显示瘤体与邻近腹主动脉及其与分支血管的关系。结论16层螺旋CT是腹主动脉瘤诊断、随诊观察和术后随访最理想的影像技术。Objective To explore the diagnostic value of abdominal aortic aneurysm （ AAA） with 16 - slice spiral CT. Methods Forty patients with AAA were examinated with 16 - slice spiral CT. Muhiplanar reformation （ MPR） , maximal intensity projection （ MIP） and volume rendering （ VR） were performed in all cases. Results Forty patients with AAA included seven cases of cystiform, twenty - three cases of shuttle and ten cases of shuttle - cystiform aneurysm. There were three cases of multiple abdominal aortic aneurysm. There was one ease of pseudoaneurysm after the rupture of true aneurysm. MPR definitely revealed the site, modality and extent of aortic disease and demonstrated the mural thrombus in the aneurysm. The calcifications of abdominal aortic aneurysm＇ s wall or in mural thrombus were well depicted by MIP. VR definitely showed the relationship between aneurysm and arterial branches with three - dimension form. Conclusion 16 - slice spiral CT is the optimal imaging technique in diagnosing, following up pre - and post - operation of abdominal aortic aneurysms.

关 键 词：主动脉瘤 腹部 体层摄影术 X线计算机 

分 类 号：R732.21[医药卫生—肿瘤] R814.42[医药卫生—临床医学]