title: Echocardiography. A valuable diagnostic tool.
mesh_terms: D004452:Echocardiography; D006321:Heart / Q000033:anatomy & histology; D006331:Heart Diseases / Q000175:diagnosis*; D006349:Heart Valve Diseases / Q000175:diagnosis; D006350:Heart Valve Prosthesis; D006352:Heart Ventricles / Q000033:anatomy & histology; D006801:Humans; D010490:Pericardial Effusion / Q000175:diagnosis