Doppler ultrasound is a medical imaging technique that uses sound waves to evaluate blood flow in the body. During the procedure, a special device called a transducer sends sound waves that bounce off moving blood cells. These reflected waves are then analyzed to measure the speed and direction of blood flow. Doppler ultrasound can help identify issues like blockages, blood clots, or abnormal blood flow patterns in various blood vessels, including those in the heart, neck, and legs. It is commonly used to evaluate the health of the heart and blood vessels and diagnose related conditions.

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