Echocardiography is a non-invasive imaging technique that uses ultrasound waves to produce real-time images of the heart’s structure and function. It is essential in clinical practice for diagnosing and monitoring cardiac conditions such as valvular disease, cardiomyopathies, and heart failure by assessing chamber size, wall motion, and blood flow. A key clinical application is detecting complications like left ventricular dysfunction following myocardial infarction.