Collateral Measure | Final Infarct <90 mL | Penumbra Saved >50% | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
AUC (± SE) | P | Optimal Criterion | Youden Index | Sens. (%) | Spec. (%) | AUC (± SE)a | P | Optimal Criterion | Youden Index | Sens. (%) | Spec. (%) | |
Visual scoring (CS) | ||||||||||||
CE-MRA | .81 (.07) | <.01b | ≥1 | .53 | 86.2 | 66.7 | .67 (.10) | .04b | >1 | .27 | 36.4 | 90.9 |
TOF | .53 (.02) | .15 | ≥1 | – | – | – | .53 (.05) | .52 | – | – | – | – |
TOF + CE-MRA | .81 (.07) | <.01b | ≥1 | .53 | 86.2 | 66.7 | .65 (.10) | .16 | – | – | – | – |
Atlas-based collateral index (CI) | ||||||||||||
CE-MRA | .94 (.04) | <.01b | >.68 | .76 | 89.7 | 86.7 | .83 (.10) | <.01b | >.64 | .70 | 87.9 | 81.8 |
TOF | .74 (.08) | .01b | >.37 | .43 | 75.9 | 66.7 | .86 (.06) | <.01b | >.38 | .58 | 75.8 | 81.8 |
TOF + CE-MRA | .95 (.03) | <.01b | >1.13 | .80 | 86.2 | 93.3 | .89 (.08) | <.01b | >1.05 | .76 | 84.9 | 9.9 |