In echocardiography, short pulses of ultrasound are attenuated, scattered, and refracted as they pass through tissue, with a small amount of energy reflected from deep structures to the transducer. Echocardiography is the most powerful diagnostic accuracy, cost effectiveness, availability, and noninvasive nature have made it the most important noninvasive examination in cardiovascular medicine. Combined M-mode, two-dimensional, and Doppler evaluation of the cardiac structures: chambers, valves and pericardial can provide reliable information about their mass, geometry, regional wall motion and function.