Measurement of intracardiac blood flow using an M-mode and/or two-dimensional (2-D) echocardiogram while simultaneously recording the spectrum of the audible Doppler signal (e.g., velocity, direction, amplitude, intensity, timing) reflected from the moving column of red blood cells.

Synonyms: Doppler Echocardiography, Two-Dimensional Echocardiography, 2 D Doppler Echocardiography, Continuous Doppler Echocardiography, 2D Doppler Two Dimensional Doppler Echocardiography Two-Dimensional Doppler Echocardiography Doppler Echocardiography, 2-D 2-D Doppler Echocardiography 2 D Doppler Echocardiography 2D Doppler Echocardiography Doppler Echocardiography, Two Dimensional Continuous Doppler Echocardiography Echocardiography, Two Dimensional Doppler Doppler Echocardiography, Continuous Doppler Echocardiography Echocardiography, Doppler Echocardiography, 2-D Doppler Doppler Echocardiography, 2 D Echocardiography, Two-Dimensional Doppler Doppler Echocardiography, 2D