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Table 2: 
Results of the quantitative analysis
ROI^a GM WM Suspected Penumbra Suspected Core
Absolute Absolute Relative Absolute Relative Absolute
CBF_DC(mL/100 g/min) 65 ± 4.7 30 ± 2.7 .48 ± .11 29 ± 6.6 .21 ± .08 12 ± 4.2
CBF_MS(mL/100 g/min) 61 ± 2.4 29 ± 1.7 .59 ± .12 32 ± 6.2 .18 ± .08 9 ± 4.0
Relative difference DC-MS +6%^b +5%^b −.11^b −12%^b +.03^b +24%^b
Bland-Altman plot slope Yes^c Yes^c No No No No
Potentially relevant differences 5% 5% 17% 7% 10% 10%
CBV_DC(mL/100 g) 3.5 ± .2 1.9 ± .2 .92 ± .16 2.9 ± .6 .37 ± .15 1.1 ± .44
CBV_MS(mL/100 g) 3.6 ± .2 1.9 ± .1 .80 ± .11 2.6 ± .3 .30 ± .12 .9 ± 0.35
Relative difference DC-MS −4%^b −2% +.12^b +11%^b +.17^b +20%^b
Bland-Altman plot slope Yes^c Yes^c Yes^c Yes^c Yes^c Yes^c
Potentially relevant differences 7% 5% 26% 12% 12% 14%
MTT 3.3 ± .3s 4.0 ± .6s 2.3 ± .67 7.6 ± 2.2s 2.1 ± .66 6.9 ± 2.1s
TTD 3.7 ± .6s 4.8 ± 1.0s 2.9 ± .87 10.6 ± 3.1s 3.7 ± 1.0 13.1 ± 3.5s
TTP 8.1 ± 2.4s 9.3 ± 2.5s 1.7 ± .33 13.4 ± 3.3s 1.8 ± .37 14.2 ± 3.7s


a ROI values are mean ± SD.


b Statistically significant difference of DC and MS medians (Wilcoxon signed rank test, P < .05).


c Statistically significant relationship of the method difference (DC − MS) versus the size of the measurement (DC + MS)/2 (Wilcoxon test, P < .05). “Yes” indicates a proportional difference; “no” indicates a systematic nonproportional or random difference.