"There is usually no gadolinium contrast enhancement. Delamarter et al. 1 described three categories of MRI appearances consistent with chronic adhesive arachnoiditis. Groups 1 and 2 were mild and group 3 severe. Groups 1 and 2 were consistent with adhesions developing between nerve roots and the parietal arachnoid."
"There is usually no gadolinium contrast enhancement. Delamarter et al. 1 described three categories of MRI appearances consistent with chronic adhesive arachnoiditis. Groups 1 and 2 were mild and group 3 severe. Groups 1 and 2 were consistent with adhesions developing between nerve roots and the parietal arachnoid."