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Dang, I missed this one. Something I actually knew!
Re the MRI, that's why they do orbital x-rays of anyone who may have even a faint possibility of having metal in their eyes (people who work on grinders, other types of metal-working etc.), prior to running the scan.
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The greatness of a nation and its moral progress can be judged by the way its animals are treated. - Ghandi 
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