For the CT scanners in use in most of the world it is not really a matter of "reportedly" but more of IF USED. The modern CT scanners are two-stage. First scan is a regular x-ray about the same as that used for the carryon bags. If there is reason for additional scanning, the CT is used and that is what ruins the film. So film in carryon bags is OK, but film in checked baggage is a crap shoot.
Originally Posted by polyglot