The results were as follow :

1) In all patients the ejection fractions by both methods were significantly correlated with each other(r=0.77, P<0.001).

2) In 10 patients with ischemic heart disease the ejection fractions by both methods were not correlated significantly(r=0.42, P>0.10). 3) Except the 10 patients with ischemic heart disease, the ejection fractions by both methods were correlated significantly(r=0.87, P<0.001).

4) In conclusion, though the ejection fraction by the above 2 methods represent the left ventricular function well, the ejection fraction by echocardiography can not represent the left ventricular function precisely in patients in patients with ischemic heart disease because of abnormal left ventricular wall motion and left ventricular function more precisely than that by echocardiography.