Harvard Health Letter

Are full-body airport scanners safe?

If you're flying somewhere, and the TSA at the airport is using full-body scanning, it's hard not to have at least a passing thought about the radiation exposure. The exposure may be zero if millimeter-wave scanners are being used. But even if the scans are done with the backscatter scanners, the exposure is so minimal — far lower than the radiation exposure during the flight — most people will decide that they have more important things to worry about.
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