Echocardiography Echocardiography (EK-o-kar-de-OG-rah-fee), or echo, is a painless test that uses sound waves to create moving pictures of your heart. The pictures show the size and shape of your heart. They also show how well your heart’s chambers and valves are working. An echocardiogram checks how your heart’s chambers and valves are pumping blood through your heart. An echocardiogram uses […]