Colour Doppler

A Color Doppler (or Colour Doppler) is a type of ultrasound imaging technique used primarily to visualize blood flow within vessels and organs. It’s commonly used in both medical diagnostics and monitoring of conditions involving the heart, arteries, and veins.

What is Color Doppler Ultrasound?

Doppler Ultrasound measures the direction and speed of blood flow using sound waves.

Color Doppler adds color to this data, allowing doctors to see:

Direction of flow (e.g., toward or away from the probe)

Speed of the blood flow

Turbulence or abnormalities (which can indicate blockages, narrowing, or other issues)

How the Colors Work:

Red usually indicates blood flowing toward the ultrasound probe.

Blue shows blood flowing away from the probe.

Different shades (lighter or darker) show different speeds of blood flow.

Mixed or turbulent colors can suggest abnormal flow (like in narrowed arteries or heart valve issues).

Types of Doppler Ultrasound:

Color Doppler – shows flow in color.

Spectral Doppler – gives a graph of flow speed over time.

Power Doppler – more sensitive to flow but doesn’t show direction.

Continuous Wave Doppler – used for high-speed flows (e.g., in the heart).

Pulsed Wave Doppler – measures flow at a specific location.

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