Why X-Ray?

An X-Ray machine is used to take pictures of dense structures in the body. The machine uses photons that pass through the body. Very dense structures, such as bones, do not allow the photons to pass through and will appear white. Air appears black, and fluid, fat and muscles will appear as shades of gray. X-Ray machines are used extensively in the health care industry. The resulting X-Ray pictures are called radiographs.