Movie clip S1. Apical four-chamber view obtained by 2D echocardiograpy employing the Siemen's Sequoia Ultrasound System. The arrows demonstrate during the cardiac cycle the directional motion of adjacent points located on the septum and LV lateral wall. The lengths of arrows are proportional to the velocities obtained from individual points on the endocardium. VVI figures for IVC, torsion, postejection isovolumic interval and rapid and slow filling are taken from this video. (Supporting Information. Reproduced with permission from Navin Nanda, M.D.)

ECHO_1448_sm_VVIA4C2.avi4081KSupporting info item

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