Yesterday I had the protons in my brain aligned with an extremely strong magnetic field — alas, it did not make me smarter or give me super powers — while radio waves excited the protons and pushed them out of alignment. As they snapped back into alignment, they produced tiny magnetic fields of their own that the imager picked up. Today I await the results.
My friend Oliver could explain all this much better, but as with almost everything else there is a Wikipedia page about it.
I got a little anxious when the tray I was lying on slid into the machine: my arms touched the sides and reminded me how small the space was. And the thing kept moving! I told the technician that since they were looking inside my head I didn’t expect they’d push me so far into the beastly thing. (I don’t remember being so encapsulated when my shoulder was scanned, but that was many years ago.)
I almost fell asleep while they were scanning me. Had the vibrations and noise been a little more consistent, I probably would have — especially since some of the vibrations were quite rhythmic. But the part where the whole tray started shaking was a little unnerving.
I hope they got good pictures of the bats in my belfry. And I hope all that unaligning and realigning didn’t make me more stupider. :p
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