title: Experimental studies on the mechanisms of closure of cardiac valves with use of roentgen videodensitometry.
mesh_terms: D015502:Absorptiometry, Photon; D000818:Animals; D001011:Aorta / Q000502:physiology; D001021:Aortic Valve / Q000502:physiology; D001022:Aortic Valve Insufficiency / Q000503:physiopathology; D016275:Atrial Function; D001783:Blood Flow Velocity; D001794:Blood Pressure; D004285:Dogs; D004562:Electrocardiography; D005112:Extracorporeal Circulation; D006351:Heart Valves / Q000502:physiology*; D007201:Indicator Dilution Techniques; D008943:Mitral Valve / Q000033:anatomy & histology / Q000502:physiology; D008944:Mitral Valve Insufficiency / Q000503:physiopathology; D009119:Muscle Contraction; D010210:Papillary Muscles / Q000502:physiology; D013690:Television; D016276:Ventricular Function