Echocardiography uses standard two-dimensional and DOPPLER ULTRASOUND to create images of the heart. Echocardiography has become routinely used in the diagnosis, management, and follow-up of patients with any suspected or known heart diseases. It is one of the most widely used diagnostic tests in cardiology. It can provide a wealth of helpful information including the size and shape of heart, pumping capacity, and the location and extent of any tissue damage. An echocardiogram can also give physicians other estimates of heart function, such as calculation of the cardiac output, ejection fraction, and diagnostic function (how well the heart relaxes).