Table 3.
HIR, core and perfusion volumes (technique: MRI)
| Patients and characteristics, n | All (n = 122) | Good collaterals (HIR <0.4), n = 81 | Poor collaterals (HIR ≥0.4), n = 41 | p value |
|---|---|---|---|---|
| Core and penumbra | ||||
| Core volume, mL | 11.5 (4–26) | 8 (3–17) | 26 (14–45) | 0.00 |
| Mismatch volume, mL | 94.5 (57–137) | 87 (53–128) | 110 (77–176) | 0.01 |
| Penumbra Tmax >6 volume, mL | 113 (79–156) | 94 (65–139) | 140 (115–194) | 0.00 |
| Penumbra Tmax >10 volume, mL | 28 (10–63) | 14 (4.0–30) | 74 (51–105) | 0.00 |
| Mismatch ratio | 8.6 (3.5–28.8) | 11.8 (4.9–49.3) | 4.2 (3.0–10.8) | 0.00 |
Data are given as n (%) and median (IQR).
MRI, magnetic resonance imaging; Tmax, time to maximum.