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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.
The echocardiogram is a non-invasive, painless procedure which uses a transducer to transmit high-frequency sound waves (ultrasound) within the heart chambers and valves.These waves bounce throughout the heart area and produce the images that detect heart damage and/or disease.n echocardiogram--or echo--is a diagnostic test used to take pictures of the heart and surrounding blood vessels.