Zhao Q, et al. - In this retrospective review, researchers assessed the incidence of aortic dilation and associated predictors in patients with coarctation of aorta (CoA) via dual-source computed tomography (DSCT). The degree of narrowing was defined by using coarctation site-diaphragm ratio (CDR). Based on the severity of coarctation, two patient groups were identified: mild group (CDR > 50%) and severe group (CDR < 50%). The risk factors including age, degree of narrowing and other malformations for aortic dilation were evaluated using Student’s t-test and Spearman correlation coefficients, univariate and multivariable logistic regression analyses. They observed an association of both ascending and post-coarctation aortic diameters or dilations with the degree of coarctation. In the risk stratification for aortic dilation in patients with CoA, DSCT can contribute by providing a comprehensive assessment of the aortic diameters and associated malformations, including collateral circulation.