Hyperdense group
| No Recanalization (n=9) | Recanalized (n=33) | p Value | |
| Received IV tPA | 56% (5/9) | 30% (10/33) | 0.242 |
| Stroke etiology | 0.094 | ||
| Cardioembolic | 89% (8/9) | 64% (21/33) | |
| Extracranial arterial disease | 0% (0/9) | 30% (10/33) | |
| Intracranial arterial disease | 0% (0/9) | 0% (0/33) | |
| Cryptogenic | 11% (1/9) | 6% (1/33) | |
| Time to treatment (mean ± SEM) | 298.0±14.9 (n=4) | 393.6±47.5 (n=19) | 0.375 |
| Number of attempts (mean ± SEM) | 2.89±0.56 | 2.88±0.27 | 0.986 |