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Evaluation of aortic valve morphology. (A) Subcostal view with 2D transthoracic echocardiography might provide a valid alternative in the absence of an adequate parasternal short axis view. (B) Short axis view with 2D transesophageal echocardiography. (C) 3D transesophageal echocardiography for the identification of the smallest aortic valve area.
