Absent left main trunk in a patient with subaortic membrane detected by three-dimensional echocardiography.

Effects of reperfusion on myocardial wall thickness, oxidative phosphorylation, and Ca2+ metabolism following total and partial myocardial ischemia. Rotational deformation of the canine left ventricle measured by magnetic resonance tagging: effects of catecholamines, ischaemia, and pacing. Vancrayenest D et al. Assessment of subendocardial vs. subepicardial left ventricular rotation and twist using two-dimensional speckle tracking echocardiography: comparison with tagged cardiac magnetic resonance. New noninvasive method for assessment of left ventricular rotation: speckle tracking echocardiography. The contribution of left ventricular muscle bands to left ventricular rotation: assessment by a 2-dimensional speckle tracking method.bution of the pericardium to left ventricular torsion and regional myocardial function in patients with total absence of the left pericardium. Detection of ischemia and new insight into left ventricular physiology by strain Doppler and tissue velocity imaging: assessment during coronary bypass operation of the beating heart. Myocardial strain analysis in acute coronary occlusion: a tool to assess myocardial viability and reperfusion. A 23-year-old male patient was admitted to our outpatient clinic with a shortness of breath. His physical examination was unremarkable except for aortic 3/6 systolic murmur. The 12-lead elec-trocardiogram showed a sinus rhythm. Two-dimensional transthoracic echocardiography demonstrated a subaortic stenosis with an increased gradient (Panel A). The two-dimensional transoesophageal echocardiography long-axis view showed a discrete membrane at the left ventricular outflow tract (Figure 1 and see Supplementary data online, Video 1B, asterisk). The three-dimensional transoesophageal echocardiography en-face view after manual cropping of a full-volume acquisition revealed a discrete membrane and separate origins of the left anterior descending and left circumflex coronary artery from the left sinus of Valsalva (Figure 1 and see Supplementary data online, Video 1C, arrows). The coronary angiogram confirmed separate origins of the left anterior descending and left circumflex coronary artery (Figure 1D, arrows). Most coronary anomalies do not result in signs, symptoms, or complications, and usually are discovered as incidental findings at the time of catheterization. 1 Three-dimensional imaging of the coronary arteries by echocardiography is feasible and possible. Three-dimensional echocardiography can be used as a new option for the non-invasive imaging of coronary arteries.