An echocardiogram is a special test that uses sound waves to create pictures of the heart. It helps doctors see how well the heart is working, including its size, shape, and the movement of its walls and valves. This test is painless and non-invasive, meaning it doesn’t require any surgery or needles. During the procedure, a technician places a small device called a transducer on the chest, which sends out sound waves. These waves bounce off the heart and return to the device, creating images that doctors can analyze. An echocardiogram is often used to diagnose heart conditions and monitor heart health.