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Facts about X-rays

Fractures of the arm or leg are relatively common. An x-ray is usually taken when a fracture is suspected.

X-rays were first discovered in 1896 by Wilhelm Conrad Roentgen.

Each of the body's tissues absorbs x-rays in a predictable way.
The bones are dense and absorb x-rays much better than the soft
tissues, which are mostly made of water.

An x-ray of the arm or leg is performed by placing the extremity
between a piece of film and a tube which makes the x-rays.

The x-ray tube is then turned on for a brief moment to expose the
film. The bones absorb most of the x-rays, and thus appear white
on the film.

In contrast, most of the x-rays penetrate through the soft tissues
to expose the underlying film and turn it dark gray. A radiologist
then examines the film to determine if there is a fracture of one
of the bones. A fracture is seen as a break in the normally smooth
contour of one or more of the bones.

Related Tags: X-rays  Bones  Medical  
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