On Jan 30, 1:54*pm, Howard Eisenhauer
wrote:
On Fri, 29 Jan 2010 14:45:31 -0800, Winston
...

H.

If you want another reason to fret, look up the intensity of the RF
and magnetic fields in an MRI machine.
http://www.aapm.org/meetings/02AM/pdf/8356-48054.pdf

The RF power absorption can be up to 10W/Kg, enough to cause
noticeable heating and considerably above the limit for cell phones.
Plus the magnetic field is strong enough to bend a knife. I ran an NMR
in a chem lab one summer and like everyone else had to see how strong
14,000 Gauss really was.

jsw