Just had one, was in it for an hour and have no idea how it actually gets an image and what the various sounds indicate.
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MRI = Magnetic Resonance Imaging
it is basically a strong magnetic field that makes the hydrogen atoms align in a certain way, then how they are connected to other atoms can be detected with radiowaves. To make images the magnetic field has to be changed in certain ways, every time the field is changes everything metallic in the machine moves a bit making noises
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