Comparison of catheter calibration method and centimeter sizing catheter calibration method in endovascular graft exclusion for Stanford type B aortic dissection / 中国介入影像与治疗学

ABSTRACT

Objective To explore the differences of aortic diameter measured by catheter calibration method and centimeter sizing catheter calibration method in endovascular graft exclusion for Stanford type B aortic dissection.Methods A total of 30 patients with Stanford B type aortic dissections treated with endovascular graft exclusion were measured with the two calibration methods to measure aortic diameters at left subclavicular artery position.The measurement parameters were compared with CTA measurement results.Results Statistical differences of measurement parameters were found among catheter calibration,centimeter sizing catheter calibration and CTA (F=3.15,P＜0.05),and paired comparison showed statistical differences between catheter calibration method and CTA result (P＜0.05),and between the results of catheter calibration method and centimeter sizing catheter calibration method (P＜0.05),while no statistical difference was found between centimeter sizing catheter calibration method and CTA result (P＞0.05).Taking CTA as golden standard method,Bland-Altman analysis indicated that the centimeter sizing catheter calibration method exerted better consistency with CTA.Conclusion The measurement value of centimeter sizing catheter calibration method is identical to the CTA measurement result,and superior to catheter calibration method for precise stent selection in Stanford type B aortic dissection.