Quote Originally Posted by KnottedYet View Post
Cause vs. effect.
(PS. I was under the impression that MRI's don't use radiation. They use magnets to align the atoms in yer body and use that info to get the picture)
"MRI" stands for "Magnetic Resonance Imaging." It works by placing you in a super-strong magnetic field, then by squirting in a burst of radiofrequency signal. This causes all the little protons in the water molecules of your body to flip, and a humonguous amoount of computer processing converts the signal absorption to a 3-D image. The math is downright UGLY, but it works. It's also why your credit cards won't work if you're foolish enough to take your wallet into the MRI center... (the magnetic field, that is... not the ugly math).

CAT is "Computerized Axial Tomography," which uses different radiant energy and even uglier math and computers to generate the images... but neither procedure will leave you feeling like a poster child for Illuminite.

TE