Imagine looking inside the human body and learning its most intimate secrets, seeing problems as they occur and without having to slice through the skin. Images help navigate the tangled blood vessels of a patient's brain before ever lifting a scalpel. A virtual flight through the human colon locates a suspicious growth without the need for cold probing steel. And a special camera is detecting radioactive signals tracking down a tumor before it grows into life threatening cancer. Each of these imaging technologies are opening the door for new cures and better treatments. It's all part of medicine in the 21st Century. And it's next on the Image Within.The healing power of medicine beings with understanding what's gone wrong inside the body. As we cross the threshold of the 21st Century, high-tech tools for peering deep inside the human body are revolutionizing the way doctors see and treat illness. Three-dimensional images of this man's arteries allow them to stay one step ahead of a deadly disease. Our surgeons hands, aided by the lens of a microscope and the precision of computer images, deliver this man from debilitating pain. And a surgery guided by X-ray images reveals the cause of this woman's mysterious illness. This is the liver here.