"Echocardiography (ECHO)," which is an ultrasound of the heart, is an indispensable diagnostic method for heart failure and valve diseases. During an echo, high-frequency sound waves, which are inaudible to the human ear, are sent to the heart with a microphone-like transmitter connected to the screen. These waves create an image of the heart on the screen. This provides the doctor with visual information about the condition and functioning of the heart and heart valves.