title: Real-time cross-sectional echocardiographic evaluation of the interatrial septum by right atrium-interatrial septum-left atrium direction of ultrasound beam.
mesh_terms: D000208:Acute Disease; D004452:Echocardiography; D006346:Heart Septum / Q000502:physiology*; D006801:Humans; D008944:Mitral Valve Insufficiency / Q000503:physiopathology; D008946:Mitral Valve Stenosis / Q000503:physiopathology*; D013997:Time Factors; D014262:Tricuspid Valve Insufficiency / Q000503:physiopathology; D014465:Ultrasonics