title: Ultrasound cardiography as an additional reference trace for phonocardiography. Report of three cases presenting difficult clinical diagnoses.
mesh_terms: D000790:Angiocardiography; D006332:Cardiomegaly; D002675:Child, Preschool; D004452:Echocardiography; D005260:Female; D006344:Heart Septal Defects, Atrial / Q000175:diagnosis; D006801:Humans; D008297:Male; D008875:Middle Aged; D008944:Mitral Valve Insufficiency / Q000175:diagnosis; D010701:Phonocardiography; D014463:Ultrasonography