A method color Doppler imaging in accordance with some examples of the present disclosure includes transmitting with a probe of an ultrasound imaging system, ultrasound pulses towards a region of interest in a subject, receiving with the probe echoes responsive to the pulses, generating B-mode image data and Doppler signals based on the ultrasound echoes, filtering the Doppler signals, wherein the filtering includes rejecting lower intensity signals which have amplitudes below a threshold amplitude and passing higher intensity signals which have amplitudes above the threshold amplitude, generating color data based on the higher intensity signals, overlaying the color data with the B-mode image data to produce a color Doppler image, and displaying the color Doppler image in a kidney stone detection interface.
