Article Figures & Data
Figures
- Fig 1.
Flow chart outlining patient selection. Tr. indicates treatment; IVT, intravenous thrombolysis; NCT, noncontrast CT.
- Fig 2.
Protocol used to define ROIs (HT area and non-HT area) on Ktrans maps. First analysis: the ASPECTS system was used to manually draw the distribution of the ischemic area on Ktrans maps and determine the permeability values of each ROI. Second analysis: the entire ischemic area from PCT imaging is overlapped on the Ktrans maps to determine the ROI, and the permeability value is restricted to this area.
- Fig 3.
Boxplots and value distribution of Ktrans values in the ASPECTS regions. A, Boxplots of Ktrans values in the HI, PH, and non-HT ASPECTS regions. In each box, the median, 95% CI, and first and third quartile values are illustrated. B, The graph illustrates the distribution of the Ktrans values, grouped into the HI, PH, and non-HT regions.
- Fig 4.
Boxplots of Ktrans values of HT and non-HT regions and the receiver operating characteristic curve. A, Boxplots of Ktrans values in HT and non-HT regions. In each box, the median, 95% CI, and first and third quartile values are illustrated. B, The optimal cutoff value of the Ktrans value for the prediction of HT is identified with receiver operating characteristic curve analysis.
Tables
Predictor variables determined to be uniquely associated with different outcomes
Outcomes Variable Factors Standard Error Wald χ2 P Value OR OR 95%CI HT vs non-HT Intercept 2.8 1.2 5.9 .02 ASPECTS −0.5 0.1 11.2 .00 0.6 0.5–0.8 Ktrans value at patient level 1.0 0.4 5.4 .02 2.7 1.2–6.5 sICH vs non-sICH Intercept −3.0 0.6 28.8 .00 Ktrans value at patient level 1.6 0.5 11.9 .00 5.0 2.0–12.7 mRS ≤2 vs mRS >2 Intercept −4.6 1.6 8.9 .00 Age 0.1 0.0 13.5 .00 1.1 1.0–1.1 NIHSS score on admission 0.1 0.1 6.2 .01 1.1 1.0–1.3 Recanalization −2.6 0.8 11.2 .00 0.1 0.0–0.3
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