Table 3.
Distribution and grades of EPVS.
| Healthy control (n = 57) | Episodic migraine (n = 59) | Chronic migraine (n = 115) | |
|---|---|---|---|
| CSO‐EPVS level, n (%) | |||
| 0 | 1 (1.75) | 0 | 1 (0.87) |
| 1 | 32 (56.14) | 18 (30.51) | 42 (36.52) |
| 2 | 21 (36.84) | 35 (59.32) | 57 (49.57) |
| 3 | 3 (5.26) | 6 (10.17) | 15 (13.04) |
| 4 | 0 | 0 | 0 |
| BG‐EPVS level, n (%) | |||
| 0 | 21 (36.84) | 9 (15.25) | 20 (17.39) |
| 1 | 34 (59.65) | 48 (81.36) | 88 (76.52) |
| 2 | 1 (1.75) | 1 (1.69) | 7 (6.09) |
| 3 | 1 (1.75) | 1 (1,69) | 0 |
| 4 | 0 | 0 | 0 |
| MB‐EPVS level, n (%) | |||
| 0 | 40 (70.18) | 29 (49.15) | 48 (41.74) |
| 1 | 17 (29.82) | 30 (50.85) | 67 (58.26) |
EPVS, enlarged perivascular spaces; CSO, centrum semiovale; BG, basal ganglia; MB, midbrain.