I was going off the list http://en.m.wikipedia.org/wiki/X-ray_computed_tomography and in haste I stopped after head and chest. You are right, I should have gone further down to the full-body as well. Thanks for that.

Incidentally, this is exactly why I included the numbers - so you can check them, and why I don't like the headline article - no numbers and no references, so there is nothing to check, only vaguely scary claims.

Newer machines are at least reducing the radiation. This is due to better compute power and to better sensors (essentially a mineral which converts x-rays into flashes of light which then get captured by a photodiode).

It's been huge in dental x-rays, going from film to CR/DR (although dental isn't huge, it's routine, and involves a large patient population including kids.)

We probably will be <5 mSv for whole-body pretty soon. Ultimately there's no reason it can't be well under 1 mSv.

Fluoroscopy on the other hand is easily 50 mSv/min and multi-hour procedures (!!!). People get acute effects from that.