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Echocardiogram, often referred to as a cardiac echo or simply an echo, is a sonogram of the heart. (It is not abbreviated as ECG, an abbreviation for an electrocardiogram .) Echocardiography uses standard two-dimensional, three-dimensional, and Doppler ultrasound to create images of the heart.
What is an echocardiogram? An echocardiogram is one of the most common diagnostic tools cardiologists use to visualize the heart, aorta, and other blood vessels. An echocardiogram is essentially a Doppler ultrasound tool. The device emits sound waves, which bounce off the heartâs structures, creating an image of the heart and/or blood vessels under examination.