A system for ultrasound imaging may include acquisition of color Doppler data associated with a pulse repetition frequency (fPRF) and a baseline shift, selection of a frame of the color Doppler data associated with low flow velocity, determination, based on the selected frame, of a first area of non-aliased flow velocities and a first direction of the non-aliased flow velocities, and detection, in another frame of the color Doppler data, of a first transition between one or more velocities of the first area and one or more velocities of an adjacent second area. A second transition may be detected between the second area and an adjacent third area of the color Doppler data, and a velocity corresponding to a Doppler shift frequency of fPRF is subtracted from or added to each of the flow velocities of the second area.
