| Finding |
Lateralizing value (PPV) |
Mechanism |
| Interictal EEG in TLE |
75% |
Activation |
| Ictal EEG in TLE |
80-92% |
Activation |
| Ictal EEG + Semiology in TLE |
95% |
_________ |
| Interictal EEG in ETE |
50-66% |
Activation |
| Ictal EEG in ETE |
Variable |
Activation |
| CT scan abnormality |
Variable |
Lesion |
| MRI abnormality |
86-100% |
Lesion |
| Interictal PET abnormality |
~ 90% |
Hypometabolism |
| Ictal SPECT abnormality |
> 95% |
Hyperperfusion |
| Interictal SPECT abnormality |
> 80% |
Hypoperfusion |
| Wada test in TLE** |
85% |
Memory asymmetry |
*Depends on the type of EEG recording. **Only in TLE.
PPV: Positive Predictive Value; TLE: Temporal Lobe Epilepsy; ETE: Extratemporal Epilepsy; EEG: Electroencephalography; CT: Computed Tomography; MRI: Magnetic
Resonance Imaging; PET: Positron Emission Tomography; SPECT: Single Photon Emission Computed Tomography |
