Comparison between videodensitometric and angiocardiographic determination of left ventricular ejection fraction in patients with cardiac disease.

Angiocardiograms have been widely used to calculate volumes of cardiac chambers. By determining the left ventricular volume in end-diastole and end-systole the ejection fraction can be calculated. The ejection fraction is considered a clinically useful index of left ventricular function and is widely used in the preoperative evaluation of patients with cardiac disease.