title: Inter-observer variation in estimates by nuclear angiography of left ventricular ejection fraction and ejection rate.
mesh_terms: D002302:Cardiac Output; D004562:Electrocardiography; D006321:Heart / Q000000981:diagnostic imaging*; D006334:Heart Function Tests / Q000379:methods; D006339:Heart Rate; D006352:Heart Ventricles / Q000000981:diagnostic imaging; D006801:Humans; D008838:Microcomputers; D009200:Myocardial Contraction; D011877:Radionuclide Imaging; D013318:Stroke Volume; D013599:Systole