X-rays are a non-invasive and painless way to reveal the interior structure of your body. It is not something that you should be afraid of as it does not hurt. X-rays produce two-dimensional images of your bones using electromagnetic radiation. The pictures depict body parts in varying shades of black and white. This is because various tissues absorb various quantities of radiation. In the bones, calcium absorbs the x-rays the most, so the bones appear bright. There is less absorption of fat and other soft tissues and they appear grey. You can use a lead apron when you have an x-ray to cover certain parts of your body. The amount of radiation that an x-ray gives you is minimal. A chest x-ray, for example , gives out a radiation dose equivalent to the amount of radiation you are normally exposed to over 10 days from the atmosphere.