title: Radionuclide techniques for valvular regurgitant index.
mesh_terms: D001027:Aortography; D002932:Cineangiography; D006349:Heart Valve Diseases / Q000000981:diagnostic imaging*; D006352:Heart Ventricles / Q000000981:diagnostic imaging; D006801:Humans; D009200:Myocardial Contraction; D011877:Radionuclide Imaging