Using the same high frequency sounds and reflections, a cardiac ultrasound (or Echocardiogram/Echo) allows us to visualize the architecture of the heart. We are able to examine the chambers, walls, valves and vessels of the heart. Using special equipment, we can also measure the speed of blood flow within the heart and determine if it is functioning properly. It is usually used in conjunction with X-Ray to visualize both the heart and the lungs in cardiac patients.