Table 5.
Cerebral Magnetic Resonance Imaging (cMRI) and Electroencephalography (EEG) Abnormalities.
| Localization of cMRI abnormalities* (N = 152) | Frequency (%) |
|---|---|
| White matter | 26 (17.1%) |
| Cortical atrophy | 11 (7.2%) |
| Temporal lobe | 4 (2.6%) |
| Frontal lobe | 3 (2.0%) |
| Parietal/ occipital lobe | 2 (1.3%) |
| Cerebellum | 1 (0.7%) |
| Brainstem | 1 (0.7%) |
| Brain's ventricle abnormalities | 5 (3.3%) |
| Thalamus | 3 (2.0%) |
| Unspecific changes | 4 (2.6%) |
| cMRI abnormalities (absolute) | 60 (39.5%) |
| EEG abnormalities* (N = 175) | Frequency (%) |
| Continuous generalized slow activity | 7 (4%) |
| Continuous regional slow activity | 0 (0%) |
| Intermittent generalized slow activity | 32 (18.3%) |
| Intermittent regional slow activity | 14 (8%) |
| Epileptic pattern | 7 (4%) |
| EEG abnormalities (total) | 60 (34.3%) |
*
Only the predominant cMRI lesion or EEG abnormality is listed for each patient. cMRI, cerebral MRI.