HIR, rCBF <30%, and Tmax volumes depending on collateral score using the Calgary/Menon method
| Characteristics | All | Calgary/Menon mCTA Score | P Value | |
|---|---|---|---|---|
| Poor Collaterals (Scores 0–3) | Good Collaterals(Scores 4–5) | |||
| No. of patients | n = 52 (100%) | n = 18 (34.6%) | n = 34 (65.4%) | |
| Perfusion characteristics | ||||
| Volume of rCBF < 30% (median) (IQR) (mL) | 15.60 (5.6–37) | 60 (14.0–92.0) | 11 (0.0–22.0) | <.001a |
| Volume of Tmax > 6 seconds (median) (IQR) (mL) | 131.00 (83.3–192) | 195 (135.0–256.0) | 105 (74.5–151.0) | <.001a |
| Volume of Tmax > 10 seconds (median) (IQR) (mL) | 58.0 (19.3–110.3) | 108 (66.0–151.0) | 26 (11.0–71.5) | <.001a |
| Mismatch volume (median) (IQR) (mL) | 99.00 (70.5–150.0) | 113 (78.0–182.0) | 94 (64.5–144.5) | .19 |
| HIR assessment | ||||
| HIR (median) (IQR) | 0.40 (0.23–0.60) | 0.60 (0.40–0.70) | 0.30 (0.10–0.45) | <.001a |
↵a Statistically significant, P ≤ .05.