ABSTRACT
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. Multiplanar 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 case 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.