Okay, so if The probability of dying from radiation from a body scanner and that of being killed in a terror attack are roughly the same, he said. About one in 30 million.
So what is the benifit again?
Peter Rez, a professor of physics at Arizona State University, disagrees. Rez has independently calculated the radiation doses of backscatter scanners using the images produced by the machines.
"I came to the conclusion that although low, the dose was higher than they said," he said.
http://www.cnn.com/2010/TRAVEL/11/12...ex.html?hpt=T2