title: Comparison of ejection fraction calculated by nine different volume calculation methods.
abstract: Single plane right anterior oblinque ventriculography was performed on 25 patients with normal left ventricular contraction and on 25 with left ventricular akinesia or dyskinesia. The value of the left ventricular ejection fraction (EF) was calculated by 9 different methods, including a new one utilizing the mathematical model of a cone. All methods tested were appropriate for inter-group comparisons of EF. For inter-individual comparisons, however, only those methods described by Davila, Chapman, Dodge, Beranek, and our new method, are appropriate.
mesh_terms: D000790:Angiocardiography / Q000379:methods*; D002302:Cardiac Output; D002306:Cardiac Volume; D002933:Cineradiography / Q000379:methods; D003327:Coronary Disease / Q000000981:diagnostic imaging; D005069:Evaluation Studies as Topic; D006321:Heart / Q000000981:diagnostic imaging*; D006801:Humans