Understanding ECG And Echocardiography: Key Uses & Variations 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, however ECG and echocardiogram are two of the most widely used cardiac diagnostic tools https://www.diigo.com/item/note/b2kov/j8d6?k=75a5fcdb000fa091eb319bc9cf8028a4