How do MRIs see inside our bodies, in 3D? (with Claire Caballero)

MRIs are loud. They’re huge. They’re magnetic. But what are they actually doing? This week, we bring Claire back to help us connect the dots between NMR (yes, organic chem flashbacks) and MRI. How does a technique built on tiny hydrogen protons turn into a 3D image of your brain? How can it tell the difference between tissue and fluid? Why can’t you bring metal anywhere near the machine? We ask: • What are your protons doing inside an MRI? • How does “magnetic resonance” become an image? • Why does oxygenated blood matter? • And how did anyone figure this out in the first place? If you’ve ever had an MRI, or just wondered how we can see inside the body without radiation or surgery, this episode pulls back the curtain. Listen in and rethink what’s happening inside that giant magnet. 00:00 MRI Episode Kickoff 01:11 Meet Claire Again 02:27 PhD Candidate Explained 03:44 NMR Basics Begin 04:33 Protons And Magnets 06:46 RF Pulse And Signal 11:16 Hydrogen Everywhere 13:35 Reading NMR Peaks 16:02 Matrix And Practice 18:31 Jam Summarizes NMR 20:44 Why MRI Not NMR 22:45 Spin And Isotopes 29:02 MRI Uses Body Water 30:37 Tissue Contrast And T1 33:38 Resolution Limits 34:25 MRI Resolution Limits 35:34 From NMR to Images 36:50 K Space and Gradients 41:30 Voxels and 3D Views 44:05 Contrast and Clinical Uses 49:47 Research Possibilities 51:11 Functional MRI Explained 56:14 MRI Safety and Magnet Strength 58:00 Helium and Heavy Machines 01:02:43 Science Boundaries and Wrap Up Support this podcast on Patreon Buy Podcast Merch and Apparel Check out our website at chemforyourlife.com Watch our episodes on YouTube Find us on Instagram , Twitter , and Facebook @ChemForYourLife References from the Episode: Thanks to our monthly supporters Amanda Raymond Emily Morrison Kyle McCray Justine Emily Hardy Ash Vince W Julie S. Heather Ragusa Autoclave Dorien VD Scott Beyer Jessie Reder J0HNTR0Y Jeannette Napoleon Cullyn R Erica Bee Elizabeth P Rachel Reina Letila Katrina Barnum-Huckins Suzanne Phillips Venus Rebholz Jacob Taber Brian Kimball Kristina Gotfredsen Timothy Parker Steven Boyles Chris Skupien Chelsea B Avishai Barnoy Hunter Reardon Support this podcast on Patreon Buy Podcast Merch and Apparel Check out our website at chemforyourlife.com Watch our episodes on YouTube Find us on Instagram , Twitter , and Facebook @ChemForYourLife Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

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How do MRIs see inside our bodies, in 3D? (with Claire Caballero) is an episode from Chemistry For Your Life by Bleav + For Your Life.

This episode is 01:09:02 long.

This episode was published on Feb 27, 2026.

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