Re: Mobile phones

["Gibbs, S Julian" <s.julian.gibbs@vanderbilt.edu>]

Several points arise from a cursory review of the "new 
data" relating low-level microwave to biologic effects:
1.  What did they use for controls?  Our experience in 
installing magnetic resonance imaging equipment shows that 
we live in a sea of RF.  All MR scanners are now put in 
what is called "screen rooms," totally shielded 
electrically from outside influence.  This is done to 
eliminate environmental RF which interferes with the MR 
signal.
2.  Why are similar results not seen in patients undergoing 
MR studies?  They are exposed to RF levels greatly in 
excess of those from mobile phones.  Current limits for 
MR are 1 W/kg whole body and a bit more to local areas.  
These limits are approached in some MR studies.
3.  Could the improved reaction times after RF exposure be 
the result of learning?  If I read the protocols correctly, 
subjects underwent reaction time testing before and after 
RF exposure.  Thus, they may have learned how to respond 
faster.

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S. Julian Gibbs, DDS, PhD               Voice: 615-322-3190
Professor of Radiology                    FAX: 615-322-3764 
Dept. of Radiology & Radiological Sciences
Vanderbilt University Medical Center
Nashville TN 37232-2670 Email:s.julian.gibbs@vanderbilt.edu
***********************************************************
If it's free, it's advice;
If you pay for it, it's counseling;
If you can use either one, it's a miracle!

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