Radiation-Emitting Products: Response to University of California - San Francisco Regarding Their Letter of Concern, October 12, 2010   [open pdf - 199KB]

This letter, from Deputy Director for Technical and Radiological Initiatives John L. McCrohan and Deputy Assistant Administrator/Chief Administrative Officer Karen R. Shelton Waters to Assistant to the President for Science and Technology John P. Holdren, responds to an April 6, 2010 letter "regarding general-use full-body x-ray screening systems used for airport security. As with all x-ray security products, justified application demands a balancing act: The radiation dose delivered must be sufficient to do the job--in this case to identify security threats--while presenting no more than a miniscule risk to people being scanned, including special populations."