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Re[2]: Rad workers - but not trained



     "A dental x-ray is equal to a day in the sun" has turned out to be a 
     remarkably accurate projection--even if for all the wrong reasons.
     
     The effective dose from a single intraoral film, done with 
     state-of-the-art technology in 1997, is approximately equal to one 
     day's natural background--using the NCRP estimate of 3 mSv/y.
     

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     S. Julian Gibbs, DDS, PhD                           Voice 615-322-3190
     Professor of Radiology                                FAX 615-322-3764
     Vanderbilt University Medical Center
     Nashville TN 37232-2675    Internet julian.gibbs@mcmail.vanderbilt.edu
     ======================================================================