ECG vs. Echocardiogram: Key Differences and Uses Explained For better heart care, it is essential to understand the difference between an ECG and echocardiogram and how each helps detect heart problems. Patients often misunderstand medical tests, however ECG and echocardiogram are primary cardiac diagnostic tools in cardiology centers such as https://medium.com/@linda.wockhardthospitals/why-i-stopped-recommending-traditional-heart-surgery-for-most-patients-7515347e2bcc