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Figure 1 Data acquisition example. A, demonstrates a transesophageal echocardiographic image with the Doppler scanline aligned from the left atrium (LA), across the mitral valve (MV), and into the left ventricle (LV). The color Doppler M-mode image with the left atrium at the top and the left ventricle at the bottom with flow across the mitral valve is shown. The blue color display shows left ventricular filling from the left atrium into the left ventricle. Orange and red colors within the filling wave indicate velocity aliasing. Within the region of interest (white box) separate E-waves (early filling wave) and A-waves (atrial contraction) can be identified. At the top is the electrocardiogram, and at the bottom is the marker signal used for temporal alignment. B, shows the simultaneously acquired LA and LV pressures stored together with the electrocardiogram and the marker signal.
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