Figure 1. Representative transesophageal echocardiography recording during administration of a transmyocardial laser pulse in the left ventricle. (LV, left ventricle; LA, left atrium; LVOT, left ventricular outflow tract). The laser pulse is applied to the left ventricular myocardial wall. Penetration of the laser pulse through the myocardial wall is clearly delineated within the LV (laser pulse). The laser-induced echogenic contrast is distributed in the LV and ejected through the LVOT (laser-induced echogenic contrast “snow”).