Anatomic Imaging Analysis And Evaluation Of Diagnostic Methods For Aortic Dissection

Objective:To analyze the characteristics of anatomic imaging of aortic dissection, and further evaluate the diagnostic methods for aortic dissection.Methods:Fifty-six patients with aortic dissection diagnosed by computed tomography (CT), digital subtraction angiography (DSA), ultrasonic cardiogram (UCG) from the Jiuquan People's Hospital were investigated for the anatomic characteristics including the number and location of entry tear, the diameter of true or false lumens, the distant between entry tear and left subclavicular artery and branches of aorta.Results:The ratio of male and female patients with aortic dissection were 4.75:1 in the present study, in them thirty-seven cases suffered from hypertension. In all cases,92.7% and 100% of aortic dissection were respectively diagnosed by UCG, CTA and DSA methods. There were no difference in the diameter of true or false lumens and the distant between entry tear and right subclavicular artery detected with CT and DSA methods. Howere, there were statistic difference between the detection rate of entry tear and intima. The detection rate of UCG and DSA in the intimal tear and intimal flap were significantly different. There were also difference between DSA and CT in the aortic valve. CT and UCG were different in the detection rate of intimal flap and the damage in the aortic valve. A total of 3 months to 6 months follow-up,15 cases were reviewed aortic CT. The diameter of true and false lumens before and after treatment of aortic dissection changed statistically significant. Conclusions:Aortic dissection is mostly attacked to patients from 50 to 70 years old. Hypertension is a crucial pathology for aortic dissection. The location of aortic dissection were mostly in ascending aorta and aortic root, followed by descending aorta and aortic arch. Stanford A type of aortic dissection is more than B-type. The diameter of the false lumen is usually larger than interlayer true lumen, often involving the right iliac artery dissection. UCG, CT and DSA has a higher detection rate, they could be widely used in primary hospital as diagnosis. They could play important roles in the diagnosis of aortic dissection, preoperative evaluation, intraoperative graft choice.