I don't think that's the kind of x-ray Van-B mentioned.
As for the "real thing", I was in such 'operation' just yesterday!
Leave in me in a small room biting some plastic thingy while holding still and watching that ufo device rotate around my head.
But the truth is, you're prolly gonna get more radiation just by travelling in an aeroplane! or by hanging out on summer. Sun and space are good sources for radiation.
and the reason the nurses, doctors and x-ray specialist leave the room is simply the dosage, nothing else. I believe there's a limit on how many x-ray checks can be done in a year. there are pretty strict rules when it comes to things like this. Those people that have to work daily in places that have radiation are constantly being watched and tested so that they can't get too big radiation dosages.
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