UK brings in full body scanners

[anat0l]

Short version: they are probably using radio-waves rather than x-ray radiation. Even if they are using x-ray backscatter, the dose is only 3 microrem, compared with an average of 238 microrem that you receive from cosmic radiation during a flight.

That is more what I wanted to hear (i.e. relative exposures).

Although radio waves - you mean like a microwave? I assume it's still not "the same thing", however. So in any case, low risk, even if you are a frequent traveller.