Understanding ECG and Echocardiography: Key Uses & Variations When it comes to cardiac care, understanding ECG vs. Echocardiogram is essential to ensure you receive correct treatment. Many people are confused between different medical tests, but ECG and echocardiogram are two of the most widely used cardiac diagnostic tools in hospitals https://www.diigo.com/item/note/b2kvl/hsen?k=8ec8e66b395b92801cab4243b911253d