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A member asked:
Does mri machines use special lenses like ones used in microscopes in combination with powerful magnets 2 get powerful resolutions for detailed image?
3 doctors weighed in across 2 answers
There are no glass: Lenses in an mri. It's a complex electromagnetic machine that converts induced and detected changes of different tissues in magnetic field into digital information on the computer screen.
Answered 7/4/2013
5k views
No lenses, but ...: Lots of radio waves. A very strong, uniform magnetic field causes hydrogen atoms to slightly align with it. Variable magnetic fields add a bit more energy and allow the location in the body to be determined. Then, as the hydrogen atoms loose some energy, they emit radio waves, which are detected and converted into images. This is a very simplified description.
Answered 7/3/2013
5k views
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