Assessment The Aortic Arch Morphology Factors Of Stanford Type B Aortic Dissection By Computed Tomography Angiography

Objective:In this study,we collectioned the data of98Stanford type B aortic dissection patients from the Vascular Surgery of First affiliated hospital of kunming medical university from July2011to December2012by computed tomography angiography,And the same period in our hospital medical imaging center line enhanced chest CT examination in patients with the corresponding data for statistical comparison, analysis of the relevance of the factors of the three branches of the aortic arch morphology with Stanford type B aortic dissection severity and characteristics.clinical reasonable evaluation of the the CT angiography technical clinical diagnosis, treatment and prognosis of status.Methods:Data measurement:1.Kunming Medical University of Vascular Surgery diagnosis for Stanford type B aortic dissection parallel98cases of patients with thoracic aortic CTA, including82males and16females, aged from34to82years, an average of53.07±11.02years old.2.Control group:the same period in the First Affiliated Hospital of Kunming Medical diagnosis is a non-Stanford type B aortic dissection and enhanced chest CT examination of493cases of patients in medical imaging center line, randomly selected98cases, including56males and42females patients, aged32to78years, an average of50.86±9.13years old.Statistical analysis:information obtained image data is sent to the Medical Imaging Center CT image workstation, based on cross-sectional images of vascular analysis software to measure the three branches of the aortic arch data, the calculated conversion angle and distance values, using the statistical software SPSS17.0for data analyzed.Results:Collected from the case group and control group98cases, and found that: 1.Case group and the control group from the comparison, the roots of Stanford type B AD patients left common carotid artery to the ascending aortic root distance is longer than the normal population, the case group was86.48±10.72mm, the control group was73.41±8.77mm.2.The point of view of the case group and the control group of Stanford type B AD patients brachiocephalic artery liters the aortic root connection with the horizontal angle is smaller than the normal population, the case group was80.18±3.70°, and the control group was81.96±3.04°; Stanford B type AD patients left common carotid artery, aortic root connection with the horizontal angle than in the normal population, the case group was76.55±6.01°, the control group was75.65±4.60°3.Case group and control group ascending aorta coronary artery opening to the root of the distance of the brachiocephalic artery, coronary artery distance to the root of the left subclavian artery, the left subclavian artery in aortic arch tangent angle in degrees Compare p-values were0.690,0.196,0.669, greater than0.05, the difference was not statistically significant. Stanford B type AD patients and normal population still can not be considered different.Conclusion:1.Distance increases the coronary artery to the root of the left common carotid artery, the brachiocephalic artery in the aortic arch tangent angle angle decreases, the left common carotid artery in the aortic arch angle of the tangent angle increases, the risk factors of AD onset Stanford B type, CTA was found in this population, the need to guard against the occurrence of Stanford B type AD.2.Brachiocephalic artery, the left subclavian artery root to the ascending aortic root distance up the connection of the aortic root at an angle of the left subclavian artery may be related to the occurrence of Stanford type B aortic dissection.3.On the three branches of the aortic arch data after TEVAR treatment of Stanford B type AD patients stent design to provide reference data.