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MRI abnormalities in patients who underwent SEEG implantations
| MRI abnormality | Frequency (%) |
|---|---|
| None | 32 (45.1) |
| Cortical dysplasia | 15 (21.1) |
| Parenchymal defect | 7 (9.9) |
| Mesiotemporal sclerosis | 5 (7.0) |
| Heterotopia | 5 (7.0) |
| Hippocampal sclerosis | 3 (4.2) |
| Previous surgery | 2 (2.8) |
| Cyst | 1 (1.4) |
| Gliosis | 1 (1.4) |
