Difference Between ECG and Echocardiogram: Complete Guide For better heart care, it is essential to understand the difference between an ECG and echocardiogram and how each helps detect heart problems. People sometimes confuse heart tests, but ECG and echocardiogram are commonly recommended cardiac diagnostic tools in cardiology centers such as https://www.diigo.com/item/note/b2kvl/hsen?k=8ec8e66b395b92801cab4243b911253d