title: Angiographic quantitation of the degree of mitral regurgitation by use of videodensitometry. Study in 172 patients.
mesh_terms: D015502:Absorptiometry, Photon / Q000379:methods*; D002932:Cineangiography; D006801:Humans; D008944:Mitral Valve Insufficiency / Q000000981:diagnostic imaging*; D012189:Retrospective Studies