Active MS plaques on DWI
This is MS patient with contrast enhancing plaque. Note on DWI sequence high signal as well as high on ADC - therefore no restriction but bright on DWI. DWI gives a clue to active plaques.
MS plaques showing highest signal on DWI are most suspect for activity - in my opinion. Therefore look at DWI (b1000) when reporting brain MRI of MS patients.