Figure 1. TEE registrations of a representative patient. (A) Modified transgastric long-axis view. AA = ascending aorta; LA = left atrium; LV = left ventricle; RV = right ventricle. (B) Pulsed-wave Doppler echocardiography at the level of the aortic valve. Blood flow velocity is given in cm/s. (C) Two-chamber view of the left ventricle in a longitudinal imaging plane. Semi-automated calculation of LV volume according to the Simpson's rule is demonstrated. (D) Short-axis image of the aortic valve. Aortic opening appears as an equilateral triangle. LCC, RCC, NCC = left-, right-, and non-coronary cusp.