Table 1.
Diffusion-weighted image lesion characteristics related to time from stroke to MRI (328 patients lacked information about time to DWI).
| DWI parameter | 0–48 h | 2–14 d | >14 d |
|---|---|---|---|
| Number of patients | 1,227 | 1,061 | 123 |
| Median time to MRI (days) (IQR) | 1 (0–1) | 3 (2–6) | 27 (20–37) |
| Anterior/posterior circulation/both (N) | 762/324/39 | 676/278/31 | 64/25/1 |
| Supratentorial/infratentorial/both (N) | 886/179/63 | 759/176/50 | 71/16/3 |
| Right/Left/both (N) | 486/539/104 | 434/464/86 | 40/45/5 |
| Brainstem, N (%) | 90 (7.3) | 103 (9.8) | 8 (6.5) |
| Cerebellum, N (%) | 62 (5.1) | 59 (5.6) | 6 (4.9) |
| Basal ganglia (%) | 189 | 157 | 10 |
| Hemisphere (%) | 658 | 563 | 60 |
| Infarct not seen, N (%) | 99 (8.1) | 76 (7.2) | 33 (26.8) |
| Multiple infarcts, N (%) | 129 (10.5) | 103 (9.7) | 6 (4.9) |