Implications of Asymmetry and Valvular Morphotype on Echocardiographic Measurements of the Aortic Root in Bicuspid Aortic Valve

•In patients with BAVs, TTE slightly underestimated aortic root diameter. •In BAV, aortic diameter differences by TTE and MRI are ≥3 mm in 39% of cases. •Root asymmetry increases aortic root diameter differences between TTE and MRI in BAV. •In BAV-RN, underestimation of aortic root diameter may be significant. •TTE-PSAX helps in root asymmetry diagnosis but has low diameter reproducibility. Background Transthoracic echocardiography (TTE) and...