Relationship Between Carotid Geometry And Atheroscletotic Plaques In The Origin Of Internal Carotid Artery By CTA

Objective To investigate the correlation between carotid geometry and atherosclerotic plaque formation at the beginning of internal carotid artery by CT angiography(CTA).Methods 246 patients with CTA examination in the head and neck were collected,fist,the morphology,lumen structure and bifurcation structure of the 492 sides of carotid artery were detected,and atherosclerotic plaques were detected in the initial part of the internal carotid artery.Then,54 cases(108 sides of blood vessels)were found in all patients with only unilateral vascular plaque.The whole condition(492 sides of blood vessels)and the two vessels of the same individual(108 sides of blood vessels)were divided into two groups respectively,plaque and no plaque groups.To investigate respectively the differences of the geometric shape of carotid bifurcation in this two groups.IBM SPSS 20.0 statistical software was used for statistical analysis,P < 0.05 had statistical significance.Results In the 492 vessels,there were 154 atherosclerotic plaques in the initial part of the internal carotid artery.The TF-AHCB classification of carotid bifurcation was 118 sides of type A,including 37 sides of plaque,252 sides of type B,75 sides of plaque,122 side of type C,42 side of plaque,and the proportion of B type was significantly higher than that of other two types.The globular classification of the carotid bifurcation was 72 sides of type I,16 sides of plaque,138 sides of type II,28 sides of plaque,99 sides of type III,28 sides of plaque,183 side of type IV,82 sides of plaque,and the ratio of type IV was significantly higher than of the others.In the same individual,there was no significant difference between the two groups in carotid artery TF-AHCB typing and angle spherical classification(P > 0.05);On the whole,the width of the internal carotid sinus,the diameter of the common carotid artery,the bifurcation angle of the common carotid artery and the TF-AHCB classification of the carotid artery were not statistically different between the two groups(P > 0.05);However,there were statistically significant differences between the two groups(P < 0.05)in the overall carotid angle globular classification,and the large angle big ball was the most likely to form the carotid atherosclerotic plaque(P < 0.05).Conclusion The larger the angle of carotid bifurcation and carotid bulb,the more likely the carotid artery origin to form atherosclerotic plaques under the influence of age,gender and other factors.However,there was no significant correlation between the geometric difference of carotid bifurcation and the formation of atherosclerotic plaque in the initial part of internal carotid artery.