Echocardiography Test: Why It's Important Echocardiography is a diagnostic test that uses sound waves to create moving images of your heart. An echocardiogram, often called an echo, is the most common heart ultrasound.
During an echocardiogram, sticky pads called electrodes will be placed on your chest. These electrodes are connected to a machine that produces sound waves. The machine sends the sound waves through a transducer, which is a wand-like device, held on your chest. The sound waves bounce off your heart and