I do MRIs for a living in a large hospital in Springfield MO. Other than pace makers and defibrillators metal of any type in the eye is one of the biggest things we worry about. Steel in any other part of the body in time forms a lot of scar around it. The magnet may torque it around or even heat it up but in most all cases the scar will prevent any damage. The eye is a different story. Its very soft and we could spin the metal or pull it out or heat it. None of which is going to do your eye any good. "Most" surgically implanted metal is safe to be scanned. The dye that some spoke about that make you sick or hot is the iodine dye used in CT scans. Our contrast is made from gadolinium, we even give it to new born babies in very small does so it is pretty safe stuff. Most all MRIs these days are thousands of times stronger than the earth’s magnetic pull and can be deadly if taken lightly so if in doubt about any metal or implants that you may have please be sure and ask you technologist about them prior to your scan. Better safe than sorry. If anyone has any questions about MRIs I will do my best to answer them. And if I don’t know I will find someone that does.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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