👉 Electrocardiography (ECG) is a diagnostic imaging test that uses electrical signals to produce a visual image of the heart. It can be used to diagnose various conditions, including arrhythmias and other types of cardiac abnormalities. In this context, "electrocardiography" refers to the process of using electrical signals to produce an image of the heart's anatomy and function. This is similar to how an ECG shows changes in a patient's electrical activity as they undergo treatment for