What Is Echocardiography? Routine Echocardiogram Protocol With Standard 2D Echo Images and Color Doppler From Wikipidia An echocardiogram, often referred to as a cardiac echo or simply an echo, is a sonogram of the heart. (It is not abbreviated as ECG, because that is an abbreviation for an electrocardiogram.) Echocardiography uses standard two-dimensional, … [Read more...] about What Is Echocardiography