[Determination of left ventricular volume and ejection fraction by ECG-gated computer tomography. Comparison of various methods with biplane ventriculography].

End-systolic and end-diastolic left ventricular volume, stroke volume, and ejection fraction were measured by biplanar and monoplanar angiography in 2 groups of 20 patients. Stroke volume was also determined by the Fick principle. Within 24 h ECG-gated "stop action" computed tomography was performed in all patients and all data were compared statistically. End-systolic volumes were measured more accurately than end-diastolic volumes. Ejection fraction was determined much more accurately than stroke volume. Even though some highly significant correlations exist, stop action computed tomography, at the moment is not recommended for clinical use in evaluation of left ventricular function. Technical problems must first be solved using models.