title: Two-dimensional contrast echocardiography in the diagnosis of atrial septal defect.
mesh_terms: D003287:Contrast Media; D004452:Echocardiography / Q000379:methods*; D006344:Heart Septal Defects, Atrial / Q000175:diagnosis*; D006439:Hemodynamics; D006801:Humans
chemical_list: D003287:Contrast Media