Table 2.

Estimated volumes and patients’ classification

Parameters	Method A	Method B	Method C
All patients (N = 142)
Core (mL)	22.7 ± 38.7	19.1 ± 35.3	36.8 ± 52.2
Hypoperfusion (mL)	160.3 ± 118.9	117.9 ± 78.4	84.5 ± 74.0
Early EVT (N = 67)
Core (mL)	19.2 ± 34.7	15.8 ± 31.5	31.0 ± 46.1
Hypoperfusion (mL)	166.8 ± 122.7	121.2 ± 71.1	82.9 ± 60.1
Mismatch ratio
≤ 1.2	1 (1.5%)	1 (1.5%)	12 (17.9%)
> 1.2	66 (98.5%)	66 (98.5%)	55 (82.1%)
Late EVT (N = 46)
Core (mL)	20.4 ± 25.7	17.4 ± 24.4	35.6 ± 44.5
Hypoperfusion (mL)	144.1 ± 106.4	111.1 ± 78.6	83.3 ± 77.8
Mismatch ratio
< 1.8	3 (6.5%)	2 (4.3%)	18 (39.1%)
≥ 1.8	43 (93.5%)	44 (95.7%)	28 (60.9%)

Mismatch ratio cutoff values followed EXTEND-IA criteria in the early time window and DEFUSE 3 criteria in the late time window. EVT endovascular thrombectomy