Diagnostic value of multi-slice spiral CT in aortic dissection

LIU Chang-wei; HUANG Xiang-ming; FU Shui

摘要：Background Aortic dissection occurs at a low incidence,but is associated with high mortality.It is generally acute onset,complicated and is often misdiagnosed; therefore is a macro vascular disease that poses major threat on patients' lives.Timely diagnosis and management are essential,so we investigated the diagnostic value of multi-slice spiral CT in aortic dissection.Methods clinical data from 21 patients with confirmed aortic dissection were retrospectively analyzed.All patients had undergone plain and contrasted multi-slice spiral CT scans.Results true lumen and pseudo cavity were clearly revealed in all 21 patients,of which 17 showed intimal flap,four showed intimal calcification and inward displacement,while 2 had thrombosis in the pseudo cavity.As for classification among these21 patients,9 had type Ⅰ aortic dissection,including two patients with innominate artery involvement,1 with celiac trunk involvement and 2 with left renal artery involvement; 2 had type Ⅱ aortic dissection,including 1 patient with innominate artery involvement; Another ten patients had type Ⅲ aortic dissection,including 2 patients with left subclavian artery involvement and 1 with celiac trunk involvement.Nineteen out of 21 patients had clearly revealed initial rapture.Conclusion multi-slice spiral CT is characterized by rapidness,non-invasiveness and accuracy.It provides clear visualization of the location and scope of aortic dissection,location of the rupture as well as the valves,which makes it a first-choice imaging approach for the diagnosis of aortic dissection.