Colour Doppler

Color Doppler is a specialized ultrasound technique used to assess blood flow and blood vessel conditions. It utilizes the Doppler effect, which describes how the frequency of sound waves changes when they bounce off moving objects—in this case, red blood cells. When ultrasound waves are transmitted into the body, they reflect off these moving cells, and the changes in frequency provide information about the velocity and direction of blood flow.

In a Color Doppler ultrasound, different colors represent various flow directions and velocities. Typically, red indicates blood flow towards the transducer, while blue indicates flow away from it. This visualization helps clinicians evaluate vascular health, detect abnormalities such as blockages, clots, or stenosis, and assess cardiac function.