Overview This test uses 1.5 to 7.5 MHz sound waves to examine the heart and produce a 2D or 3D image of the heart’s internal structure called the echocardiogram. An echocardiogram, commonly known as ‘echo’ provides information about the heart’s size, the size and functioning of the heart’s valve, the size of the heart’s chambers, the thickness of cardiac walls, the pumping activity of the heart, growth of any tumor in the heart, and the blood flow pattern. It is referred by cardiolog...