DeGaussing an MRI suite

["John Moulder" <jmoulder@its.mcw.edu>]

Has anyone has any experience in dealing with the residual static magnetic 
fields that remain in an MRI suite after a unit is removed?

The residual fields can reach 2 mT.  This is too low to be a real health 
concern, but it's enough to cause problems for electronics and its enough to 
upset people.

Degaussing is theoretically possible, but I can't find anyone who has actually 
done it.


John Moulder (jmoulder@its.mcw.edu)

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