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
Produced by James E. Siegler. Music courtesy of Uncanny and
Kevin McLeod. Sound effects by Mike Koenig. BrainWaves' podcasts
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