Ignoramus13653 wrote:

On 27 Jan 2006 16:18:23 GMT, Dave Hinz wrote:
On Thu, 26 Jan 2006 22:39:58 -0600, Martin H. Eastburn wrote:
And if you go to get an MRI - our bodies might have metal flecks within.
Be sure to mention it - as the metal gets hot and burns.

No, it doesn't get hot or burn. (I worked in engineering on MRI scanners
for ~12 years). It can cause image distortion localized around the
metal (very local effect for slivers, nearly invisible). If you've got
metal in your eyes, they may choose not to use MRI on you, though.

I'd be happy to discuss this in as much detail as you'd like.

Dave, I am interested in MRIs in general, so if you have any stories
to share, or interesting facts, that would be great.

i

They had the theory of MRI's NMR's back in the sixties. The chem lab
was doing research in that area. The big problem was processing the
data with the days technology. They could receive the signals from the
excited molecules but could not do the processing to locate the exact
sorce and make a picture as they do today.

John