# Episode 154: Magnetic Resonance Imaging Page: https://stenobird.com/podcast/the-science-of-everything-podcast-533303/episode-154-magnetic-resonance-imaging Text version: https://stenobird.com/podcast/the-science-of-everything-podcast-533303/episode-154-magnetic-resonance-imaging.md Podcast: [The Science of Everything Podcast](https://stenobird.com/podcast/the-science-of-everything-podcast-533303) Published: 2025-09-23T01:30:36+00:00 Episode link: https://www.thescienceofeverything.net/e/episode-154-magnetic-resonance-imaging/ Audio file: https://mcdn.podbean.com/mf/web/pz5ni98mwcvh5wpi/Episode_154_-_Magnetic_Resonance_Imaging67vl9.mp3 Processing state: not_requested JSON: https://stenobird.com/v1/public/podcasts/the-science-of-everything-podcast-533303/episodes/episode-154-magnetic-resonance-imaging Duration seconds: 5506 ## Resource An overview of Magnetic Resonance Imaging (MRI), beginning from the basic physics of nuclear magnetic resonance, and covering the use of radiowaves to excite nuclear spin states, and the T1 and T2 modes of relaxation. We then explore how these phenomena are used to produce 3d images, including magnetic field gradients, frequency encoding, phase encoding, and Fourier transforms. We conclude with a discussion of functional imaging, including the haemodynamic response, the BOLD signal, echo planar imaging, and the steps of preprocesing. Recommended pre-listening is Episode 14: Principles of Quantum Mechanics, and Episode 61: Magnetism. If you enjoyed the podcast please consider supporting the show by making a PayPal donation or becoming a Patreon supporter. https://www.patreon.com/jamesfodor https://www.paypal.me/ScienceofEverything ## Actions - request_transcript: `POST https://stenobird.com/v1/public/podcasts/the-science-of-everything-podcast-533303/episodes/episode-154-magnetic-resonance-imaging/transcription-requests` — Idempotently request low-priority transcript generation for this episode. - read_markdown: `GET https://stenobird.com/podcast/the-science-of-everything-podcast-533303/episode-154-magnetic-resonance-imaging.md` — Read the agent-friendly Markdown representation of this episode resource. A page view does not enqueue transcription. Agents should invoke `request_transcript` explicitly when they need this episode processed. ## Transcript Full transcripts are not published on public pages unless there is a clear rights basis.