How does MRI work? Jerome Maller explains

[MamaPinks]

The best explanation I've found yet! Thank you.

[stefstef]

Wow that was an amazing explanation - thank-you so much

[charliewillis]

Very good this helped ma a lot, many thanks

[tigerbaby]

Thank you for making it so easy to understand. Very much appreciated.

[eppurse]

Some corrections from an old timey tech

Not just water makes the image- fat too- and materials that are not water and/or not fat for contrast

I think you meant north-south and south-north when describing parallel/antiparallel

"spinning" is not the same as "precessing"- a spinning top, as gravity starts to overcome it, starts to wobble around its original vertical axis- that wobble (not the spin) is the precession

He does not describe the spin echo sequence adequately- there is more than a 90deg flip- after a pause ("tau"), there is another flip of 180deg in spin echo Never is just a 90deg flip radio pulse used

No mention here of radio waves, radio frequencies, just antennas- as if the hydrogen is detected in some mysterious way- a grave error

Not University-worthy