title: Preliminary experiences in 1- and 2-dimensional contrast echocardiography.
mesh_terms: D002648:Child; D002675:Child, Preschool; D004452:Echocardiography / Q000379:methods*; D005069:Evaluation Studies as Topic; D006330:Heart Defects, Congenital / Q000175:diagnosis* / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D009200:Myocardial Contraction; D011184:Postoperative Period