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An echocardiogram is a test that uses ultrasound waves to examine the heart. Because it is a non-invasive test, it is a safe and painless way to help doctors diagnose a number of abnormalities of the heart.n echocardiogram is a test that uses ultrasound waves to examine the heart. Because it is a non-invasive test, it is a safe and painless way to help doctors diagnose a number of abnormalities of the heart.
1 Echocardiography (echo) is a painless test that uses sound waves to create pictures of your heart. 2  This test gives your doctor information about the size and shape of your heart and how well your heart's chambers and valves are working.ardiologists, or heart specialists, are trained to evaluate these images to assess heart function and provide a report of the results.The echocardiogram is just one of the many tests that can be done to evaluate heart anatomy and function. An electrocardiogram (EKG, ECG) is the most common heart tracing done.