"DWI reversal generally refers to the resolution of some or all hyperintensity seen on initial imaging when this is compared to subsequent MRI. Which sequences are used for this later comparison, as well as precise definitions of what is meant by DWI reversal, is variable, resulting in heterogenous incidence and outcomes 4,6."
"Overall presence of DWI reversal is associated with some improvement in clinical outcomes (e.g. NIHSS and modified Rankin Scale) 4,5 although in some/many cases, it is transient, and the abnormal DWI signal returns 1,2."
"A similar appearance is encountered in other clinical contexts (e.g. hemiplegic migraine, seizure, transient ischaemic attack, transient global amnesia, and in some instances of PRES - those that show a degree of restricted diffusion (26% of cases)), wherein DWI changes resolve 3."
"A similar appearance is encountered in other clinical contexts (e.g. hemiplegic migraine, seizure, transient ischaemic attack, transient global amnesia, and in some instances of PRES - those that show a degree of restricted diffusion (26% of cases)), wherein DWI changes resolve 3."