Mean [11C]PBR28 SUV60-90 and percent signal change in individual gray matter, white matter, and CSF regions of interest. The point and line plots on the left panel illustrate the magnitude of [11C]PBR28 SUV60-90 at pre-operative baseline (PREOP) and 1-month post-operative follow-up (PO1MO) in various regions of interest (ROIs) across the brain. These ROIs are rank-ordered by the magnitude of change in [11C]PBR28 SUV60-90 across the two timepoints expressed as percent, i.e., (PREOP – PO1MO) / PREOP × 100, from largest (top) to smallest (bottom). The corresponding % signal change for each ROI is depicted on the right panel. N = 36. Error bars represent the standard error of the mean.