Ultrasonics in cardiac diagnosis.
D004452:Echocardiography; D006330:Heart Defects, Congenital / Q000175:diagnosis; D006331:Heart Diseases / Q000175:diagnosis*; D006801:Humans; D008946:Mitral Valve Stenosis / Q000175:diagnosis; D010490:Pericardial Effusion / Q000175:diagnosis; D014463:Ultrasonography