I bet you get more radiation during your flight. Still, if this fuels irrational public fear of scanners such that it outweighs irrational public fear of terrorism, I'll consider it a good thing.
The data we have -- the data used in the model used to conclude this stuff is safe -- is for the wrong geometry. Please, no "spherical cow" assumptions when it comes to my health. Zap a bunch of little furry creatures with the same equipment, then I'll feel safe.
I agree with others, though, that the TSA should know, to a reasonably high degree of certainty, what the maximum dose of radiation will be from any given scan. But what can you expect from an organization that judges success by the number of water bottles and nail clippers confiscated...