Quantitative Evaluation of Cardiac Volumes and Outputs: Technical Aspects

Abstract

In addition to the ejection fractions and wall motion evaluations reported through conventional equilibrium gated blood pool scans, left ventricular volumes and cardiac output values may also be obtained. We describe a cardiac function study based on a model of the kinetics of a bolus of technetium-99m-labeled red cells through the left ventricle (1). Data acquisition requires only a slight modification of the conventional gated procedure. The method described has become a valuable adjunct to conventional radionuclide procedures for evaluation of left ventricular function at our institution.