title: Assessment of regurgitation fractions by radionuclide ventriculography.
abstract: The ratio A for left ventricular and right ventricular enddiastolic-endsystolic count differences was used for quantitative evaluation of aortic and mitral valve regurgitation. The mean value of A for patients without valvular insufficiencies was determined (Am = 1.43 +/- 0.27).23 (96%) of 24 patients with aortic or mitral valve regurgitation showed significantly increased A values (A greater than 2). The numerical value was used for classification of the degree of insufficiency and for comparison with angiography. The correlation between A and the average angiographic degree of insufficiency was 0.79.
mesh_terms: D000792:Angiography; D001022:Aortic Valve Insufficiency / Q000000981:diagnostic imaging*; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008944:Mitral Valve Insufficiency / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging