Aortic regurgitation:assessment with dual-source CT
10.3969/j.issn.1002-1671.2015.03.010
- VernacularTitle:双源CT对主动脉瓣返流的诊断价值
- Author:
Pufei WANG
;
Hongfei AN
- Publication Type:Journal Article
- Keywords:
computed tomography;
echocardiography;
aortic regurgitation
- From:
Journal of Practical Radiology
2015;(3):384-387
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the feasibility and accuracy of dual-source CT (DSCT)in evaluating aortic regurgitation (AR). Methods Among 78 patients who underwent both DSCT and TTE,38 patients were diagnosed as AR and 40 without AR served as controls.Maximum regurgitant orifice area (ROA)in diastole was planimetrically measured with DSCT,and measurements were compared with semiquantitative classification of TTE.Results DSCT correctly identified 37 patients with AR.Compared with TTE,two patients were false positive and three patients were false negative findings by DSCT (sensitivity 92%,specificity 95%, positive predictive value 94%,and negative predictive value 93%).ROA measured by DSCT (0.32 cm2 ±0.44 cm2 )was signifi-cantly correlated with TTE classification (r=0.85,P<0.01).With receiver operating characteristic curve analysis,discrimination between degrees of AR with DSCT was high accurate when using cutoff ROAs of 0.08 cm2 and 0.58 cm2 .Conclusion Planimetric measurement of ROA with DSCT is accurate for the quantitative evaluation of AR.
