See through tissue

Scientist at the California Institute of Technology are developing new ways of looking at our body. First it is necessary to understand why we our tissues aren't transparent like a jellyfish. The reason is that our body tissues scatters the photons when they enter our skin and the light rays never converge to form an image. What Changhuei Yang and his colleagues are researching is how to use a photorefractive holographic crystal to piece back together the scattered photons, analogous to making the photons retrace their paths to make the original beam of light. They have ran experiments with a .46 mm thick piece of chicken breast and produced promising results. Also the scientist plan to investigate light sensitive technologies that could be implanted in a human to destroy cancer cells or recharge prosthetic devices.

http://www.sciencedaily.com/releases/2008/02/080212165049.htm