Study of normal and abnormal movements of mitral valve ring using reflected ultrasound.
D000790:Angiocardiography; D001022:Aortic Valve Insufficiency / Q000503:physiopathology; D001281:Atrial Fibrillation / Q000503:physiopathology; D006350:Heart Valve Prosthesis; D006801:Humans; D008943:Mitral Valve / Q000502:physiology / Q000503:physiopathology*; D008944:Mitral Valve Insufficiency / Q000503:physiopathology; D008946:Mitral Valve Stenosis / Q000503:physiopathology; D009068:Movement; D014463:Ultrasonography