Table 2. Performance of various imaging techniques for EZ localization.
| TP | FN | FP | TN | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | YI | |
|---|---|---|---|---|---|---|---|---|---|
| VEEG | 32 | 4 | 2 | 4 | 88.9 | 66.7 | 94.1 | 50.0 | 0.57 |
| MRI | 21 | 15 | 1 | 5 | 58.3 | 83.3 | 95.5 | 25.0 | 0.42 |
| MRS | 18 | 18 | 0 | 6 | 50.0 | 100 | 100 | 25.0 | 0.50 |
| PET-CT | 30 | 6 | 3 | 3 | 83.3 | 50.0 | 90.9 | 33.3 | 0.33 |
| RS-fMRI | 30 | 6 | 2 | 4 | 83.3 | 66.7 | 93.8 | 40.0 | 0.50 |
EZ, epileptogenic zone; TP, true positive; FN, false negative; FP, false positive; TN, true negative; PPV, positive predictive value; NPV, negative predictive value; YI, Youden index; VEEG, video electroencephalography; MRI, magnetic resonance imaging; MRS, magnetic resonance spectroscopy; PET-CT, positron emission tomography—computed tomography; RS-fMRI, resting- state functional MRI.