[The ultrasonic method of study of heart function, based on the Doppler effect].
D003937:Diagnosis, Differential; D006334:Heart Function Tests; D006349:Heart Valve Diseases / Q000175:diagnosis; D006801:Humans; D008946:Mitral Valve Stenosis / Q000175:diagnosis; D055585:Physical Phenomena; D010825:Physics; D014465:Ultrasonics
Ul'trazvukovoĭ metod issledovaniia funktsiĭ serdtsa, osnovannyĭ na éffekte Dopplera.