title: [Doppler echocardiography--its principles and technical realization].
mesh_terms: D001783:Blood Flow Velocity; D001794:Blood Pressure; D001810:Blood Volume; D004301:Doppler Effect; D004452:Echocardiography / Q000295:instrumentation / Q000379:methods*; D005583:Fourier Analysis; D006351:Heart Valves / Q000502:physiology; D006801:Humans; D008433:Mathematics; D013997:Time Factors
vernacular_title: Doplerova ekhokardiografiia--printsipi i tekhnichesko izpŭlnenie.