What is a Doppler Echocardiogram?
Doppler echocardiograms are a unique and useful test. When sound waves bounce off blood cells moving through your heart and blood vessels, they change pitch. These changes, called Doppler signals, can help a qualified doctor and ultrasound machine measure the speed and direction of the blood flowing in and out of heart chambers, heart valves, and blood vessels.
Doppler measurements may be displayed in black and white or in color. Doppler techniques are used in most transthoracic and transesophageal echos, and can check blood flow problems that traditional ultrasounds might not detect.