Echocardiography, Doppler

**Definition:** 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.

**Tree numbers:** - E01.370.350.130.750.220 - E01.370.350.850.220.220 - E01.370.350.850.850.220 - E01.370.370.380.220.220

**Synonyms:** - Doppler Echocardiography