I've been looking on Wikipedia about Ionizing Radiation. Basically, it's a technique that is used in Radiation Therapy... according to my research. However, I've come across two sentences that do not make sense to me.. This is all on the same article on http://en.wikipedia.org/wiki/Ionizing_radiation" [Broken] When they refer to the word exposure, they wouldn't happen to mean: over-exposure would they? ~A.