Two-dimensional echocardiographic measurement of left ventricular ejection fraction: prospective analysis of what constitutes an adequate determination.
D002302:Cardiac Output; D003327:Coronary Disease / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000503:physiopathology; D004452:Echocardiography; D006349:Heart Valve Diseases / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000503:physiopathology; D006352:Heart Ventricles / Q000000981:diagnostic imaging / Q000503:physiopathology*; D006801:Humans; D008433:Mathematics; D009200:Myocardial Contraction; D011446:Prospective Studies; D011859:Radiography; D013318:Stroke Volume