Doppler effect results from change in -
Doppler effect is due to shift in sound frequency as the sound as reflected from the moving Red blood cells. If the motion of RBC is towards the transducer, the returning sound wave has higher frequency than transmitted wave. If the motion of RBC is away the transducer, the returning sound wave has lower frequency than transmitted wave. Color intenstiy indicates the relative velocity of the red blood cells.
Amplitude of sound
Frequency of sound
Direction of sound
None of the above
Fundamentals in Radiology