be able to see inside a living, breathing
body must have seemed like science
fiction to medical practitioners in
No wonder they all got so excited
that year when German physicist Wilhelm
Röntgen announced his discovery
of x-rays. X-rays are high energy
rays that pass though soft tissue
to form an image on either a fluorescent
screen or photographic film. Fewer
rays pass through denser material,
like organs and bones, so these areas
appear lighter on photographic film.
Now hospitals are moving to a filmless
system, using digital images that
are stored electronically.