Not to my knowledge, but if want to be on the safe side there are special lead lined packs for film. My brother has one it holds about 9 rolls of film it would hold a ton of flash media.
I heard a few months back that you shouldn't use those. When they x-ray your bag/luggage, if they see something that is blocked like the lead-lined film roll, security will increase the amount of x-rays until they can see what is inside the lead-lined box. So, in the end, your bag/luggage is getting hit with a larger dose of x-rays.