A MUGA (Multi-Acquisition Gated) test is very useful in evaluating how well your heart is working. We can see how the walls of your left and right ventricles contract and how much blood they pump (an ejection fraction). You may have shortness of breath, an enlarged heart, an aneurysm, or some disease of the heart. You may also be receiving or being evaluated to receive chemotherapy. We can determine whether or not any of these conditions are affecting your heart’s operation.