[Progress in diagnostic echocardiography of the heart].
Erbel
R
R
D004452:Echocardiography / Q000379:methods*; D015150:Echocardiography, Doppler; D019560:Echocardiography, Three-Dimensional; D006331:Heart Diseases / Q000000981:diagnostic imaging*; D006801:Humans; D007091:Image Processing, Computer-Assisted