Article Figures & Data
Figures
- Fig 1.
CTA collateral status in the region of the occluded vessel. A, Absent collaterals. B, Minimal (<50%) collaterals. C, Partial (>50%) collaterals. D, Full presence of collaterals.
- Fig 2.
Distribution of DWI infarct volume of each patient according to the time from last seen well to MR imaging and collateral status.
- Fig 3.
Receiver operating characteristic curve demonstrating no association between the time from LSW to MR imaging (0–3 hours versus 3–6 hours) and DWI infarct volume.
Tables
Imaging characteristics by time from last seen well to MRI
0 to <3 Hours (n = 21) 3–6 Hours (n = 70) 0–6 Hours (Entire Cohort) (n = 91) P Value (Difference, 0–3 vs 3–6) Age (yr) (median) (IQR) 58 (54–77) 73 (63.25–83) 70 (59–82) .034 NIHSS (median) (IQR) 13 (11–19) 17 (13–22.75) 17 (12–21.5) .050 CT ASPECTS (median) (IQR) 9 (7–10) 8 (I6–9) 8 (6–9) .202 CT ASPECTS ≥7 (No.) (%) 17/20 (85%) 42/61 (69%) 59/81 (72%) .159 CTA collaterals >50% (No.) (%) 14/19 (74%) 37/57 (65%) 51/76 (67%) .481 DWI volume (mL) (median) (IQR) 24.7 (13.9–63.8) 29.4 (12.1–68.5) 29.2 (12.3–68.5) .906 MRI DWI volume ≥70 mL of DWI volume (No.) (%) 5 (23.8%) 16 (22.8%) 21 (22.8%) .928 MRI DWI volume ≥100 mL of DWI volume (No.) (%) 4 (19%) 13 (18.6%) 17 (18.7%) .961 Terminal ICA occlusion (No.) (%) 5 (23.8%) 18 (25.7%) 23 (25.3%) .961 Proximal M1 occlusion (No.) (%) 5 (23.8%) 21 (30%) 26 (28.6%) .706 Distal M1 occlusion (No.) (%) 11 (52.4%) 31 (44.3%) 42 (46.1%) .393
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