The brain as seen from a precessing proton.
→At 7T, protons rotate so incredibly fast! It takes longer for radio waves to travel through the brain (speed of light) than one full proton rotation.
→Swirly pattern comes from the right-hand-rule of the Larmor equation.
#brainartpic.twitter.com/1k7FNBuUsZ
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I'm confused...what's the transformation here? Where is the proton? And why is it precessing?
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Hard to explain in 280 characters
I'll try it in figures:
*proton is a dipole
*dipole is in the center
*it precesses in the external field
*at 7T, speed of light is relevant
*outer parts of brain come are seen later
*with delayed phasepic.twitter.com/rRXuSHpcD2
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