The color priority determines which signal of B-mode and Doppler, detected from the same location will be displayed in a given pixel. Low color priorities will allow solid tissue to conceal Doppler shifts at the same location; a high priority ensures that color will overwrite the gray scale image.
Also called color-echo write priority or angio write priority.

See also Directional Indicators.

(CD) Color Doppler is an ultrasound imaging mode, which visualizes the presence, direction and velocity of flowing blood in a wide range of flow conditions. It provides an estimate of the mean velocity of flow within a vessel by color coding the flow and displaying it superimposed on the 2D gray scale image. The flow direction is arbitrarily assigned the color red or blue, indicating flow toward or away from the transducer.
Color (colour, Brit.) Doppler ultrasound is capable of evaluating a wider area than other Doppler modes than for example Duplex or power Doppler, and therefore makes it less likely to miss flow abnormalities. It is also easier to interpret. Color flow is not as precise as conventional Doppler and is best used to scan a larger area and then use conventional Doppler for detailed analysis at a site of potential flow abnormality.

Adjustments for color Doppler in case of too much color:
Adjustments for color Doppler in case of not enough color:
See also Color Power Doppler, Autocorrelation, Color Priority, Triplex Exam and Color Saturation.

(CFI) Color flow imaging is based on pulsed ultrasound Doppler technology. With this technique multiple sample volumes among multiple planes are detected and a color map for direction and velocity flow data is displayed.
Common mapping formats are BART (Blue Away, Red Towards) or RABT (Red Away, Blue Towards). Enhanced or variance flow maps show saturations and intensities that indicate higher velocities and turbulence or acceleration. Some maps utilize a third color (green) to indicate accelerating velocities and turbulence.
Color flow Doppler imaging is not as precise as conventional Doppler and is best used to scan a larger area and then use other Doppler modes to obtain more precise data.

See also Color Amplitude Imaging, Color Priority, and Color Saturation.

In a color map, colors are allocated to Doppler shift frequencies corresponding to flow. Color (colour, Brit.) maps may also display Doppler amplitude, signal power, variance, or the gray levels of the B-mode image.

See also Color Amplitude Imaging, Color Priority, and Color Saturation.