A Transportation Security Administration security officer looks at images created by a "backscatter" scanner during a demonstration at the TSA's Systems Integration Facility at Ronald Reagan National Airport December 30, 2009.
The older generation full-body scanners, like those at Dallas/Fort Worth International Airport and Dallas Love Field, are safe even for the most frequent flyers according to the Department of Homeland Security.
A new 32-page report released by the department's inspector general shows someone would have to go through the full-body scanner 17,000 times a year to surpass the accepted limit of radiation. That would be like being screened 47 times a day, every day of the year.
The inspector general said the Transportation Safety Administration checks the backscatter X-ray machines regularly to make sure they're not emitting more radiation than is necessary, but the report recommends, and the TSA agrees, machine operators need more training.