No difference in the apparent diffusion coefficient (ADC) between the time-to-peak (TTP) region and penumbra tissue was noted (P = 0.25), whereas significantly lower ADC was measured in both the ischemic core and tissue progressing to infarction (P < 0.001). There was no significant difference of the TTP or the T2 FLuid Attenuated Inversion Recovery (T2 FLAIR) data between any of the four regions. Finally, a trend for a mean reduction in amide proton transfer (APT) was found between the at-risk tissue and final infarct volume (P = 0.10), and all ischemic regions had lower APT effects relative to normal-appearing-white-matter (NAWM).