Re: textbook correct?

[julian.gibbs@mcmail.vanderbilt.edu]

     Mornin' to all from the not-so-sunny South.
     
     The issue of cancer causation by diagnostic exposure to radiation 
     again raises its ugly head.  We must all remember that a few 
     case-control epidemiological studies have demonstrated (?) 
     statistically significant associations between cancer and diagnostic 
     exposure.  It is interesting that no cohort studies have confirmed 
     these results.  Further, these results show only an association, and 
     are not proof of cause and effect.  Finally, all of the exposures in 
     question occurred years to decades ago, when patient doses were 
     substantially higher than they are now.  There are no data showing 
     that current diagnostic exposures are in any way harmful.  A recent 
     summary is in "Radiation Risk--A Primer" published in 1996 by the 
     American College of Radiology.
     
     By the way, can you provide author and title of the textbook in 
     question.  I want to know what to avoid.
     

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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
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