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BrainWaves: A Neurology Podcast


Jan 9, 2020

The common teaching is that restricted diffusion on MRI indicates stroke—acute cerebral infarction. When, more specifically, the changes on DWI and ADC indicate impairment in the random movement of water molecules in a given tissue. With slower movement, as in energy-depleted tissues with failing ATP-dependent sodium/potassium channels, high cellularity, or a highly viscous extra-cellular space, there is restricted diffusion (of water) and a corresponding bright signal on DWI. These and other considerations are the focus of this week's episode of BrainWaves.

Produced by James E. Siegler. Music courtesy of Uncanny and Kevin McLeod. Sound effects by Mike Koenig. BrainWaves' podcasts and online content are intended for medical education only and should not be used for clinical decision making. Be sure to follow us on Twitter @brainwavesaudio for the latest updates to the podcast.

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