Quantification of perivascular spaces by site in patients with IIH versus controls
| Location | IIH Mean No. of Dilated PVS (SD) | Control Mean No. of Dilated PVS (SD) | P Value | k Value (mean) (range) |
|---|---|---|---|---|
| Centrum semiovale | 2.3 (1.4) | 1.3 (1.1) | .003 | 0.58 (0.51–0.67) |
| Basal ganglia | 1.7 (0.6) | 1.2 (0.7) | .009 | 0.85 (0.81–0.89) |
| Midbrain | 0.5 (0.5) | 0.4 (0.5) | .47 | 0.47 (0.40–0.54) |
| Total | 4.5 (1.9) | 2.9 (1.9) | .004 | 0.71 (0.65–0.76) |