Diana has to follow certain procedures when taking patients down to MRI, because the magnets in the machine can disable watches and make other stuff fly across the room. Well, I stumbled across a site that depicts what happens when you're not careful:
> Flying Objects!
> "Once you've been in the MRI field for any length of time,
> you start hearing all of the various horror stories about
> things that have flown into a scanner. Often, newcomers
> don't take the real danger of flying objects seriously
> until they witness an oxygen tank or gurney flying into a
> magnet themselves. This page will contain a collection of
> pictures and stories of metalic projectiles."
http://www.simplyphysics.com/flying_objects.html#