The Electronic Privacy Information Center is going great guns with its Freedom of Information requests to the DHS on the full-body radiation scanners ("pornoscanners") used in airports. EPIC's liberated documents suggest that the DHS itself has failed to adequately test scanners for radiation risk, that they're worried about this, and that they're taking steps to cover this up. Based on this stuff, I think you'd be nuts to go through a scanner -- and that the DHS's employees should refuse to operate them.
EPIC v. DHS Lawsuit -- FOIA'd Documents Raise New Questions About Body Scanner Radiation Risks : In a FOIA lawsuit against the Department of Homeland Security, EPIC has just obtained documents concerning the radiation risks of TSA's airport body scanner program. The documents include agency emails, radiation studies, memoranda of agreement concerning radiation testing programs, and results of some radiation tests. One document set reveals that even after TSA employees identified cancer clusters possibly linked to radiation exposure, the agency failed to issue employees dosimeters - safety devices that could assess the level of radiation exposure. Another document indicates that the DHS mischaracterized the findings of the National Institute of Standards and Technology, stating that NIST "affirmed the safety" of full body scanners. The documents obtained by EPIC reveal that NIST disputed that characterization and stated that the Institute did not, in fact, test the devices. Also, a Johns Hopkins University study revealed that radiation zones around body scanners could exceed the "General Public Dose Limit." For more information, see EPIC: EPIC v. Department of Homeland Security - Full Body Scanner Radiation Risks and EPIC: EPIC v. DHS (Suspension of Body Scanner Program). (Jun. 24, 2011)EPIC v. Department of Homeland Security - Full Body Scanner Radiation Risks (Thanks, HotPepperMan!)