The imaging study on the related factors of the change of systemic circulation time for aortic dissection patients / 实用放射学杂志

ABSTRACT

Objective To explore the related imaging factors about the change of systemic circulation time for aortic dissection (AD)patients.Methods Image data of 36 patients with AD and 30 patients in control group were analyzed retrospectively,the cor-relation analysis was made between the results of imaging measurement by using CT angiography (CTA)and the threshold time of the contrast agent in the left ventricular.3 6 patients with AD were divided into 2 groups (type A 1 7 cases and type B 1 9 cases)by using Stanford type.First,the threshold time in the left ventricular of the 3 groups were analyzed comparatively;next,the correla-tions between each CTA measured parameter and the threshold time in the left ventricle were analyzed.Results Threshold time in left ventricular of group Stanford A and group Stanford B were compared with the control group respectively,the overall mean difference was statistically significant (P 0.05).There was a significant correlation between threshold time in left ventricular and the ratio of false/true lumen (r=0.676,P 0.05).Conclusion The threshold time of left ventricular for aortic dissection patients is significantly longer than the normal control group,and is significantly related with the ratio of false/true lumen.