Figure 47

Two-dimensional echocardiogram from a patient with aortic stenosis due to a bicuspid aortic valve (congenital).
a. Parasternal long-axis view shows systolic doming (bowing) of the anterior and posterior cusps of the aortic valve (arrowheads). b. Parasternal short-axis view at the level of the aorta shows only two cusps (arrowheads). Ao, aorta; LVOT, left ventricular outflow tract; RVOT, right ventricular outflow tract; RA, right atrium; LA, left atrium; RV, right ventricle.

J.M. Felner M.D., R.P. Martin M.D., The Echocardiogram, The Hurst's The Heart, 8th ed., p 406. (modified)
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