WM Lesions | Cortical Lesions | Mixed Lesions | ||
---|---|---|---|---|
WM Portion | Cortical Portion | |||
Relative susceptibility (ppm) (per lesion type) | 0.014 ± 0.014 | −0.018 ± 0.013 | 0.014 ± 0.018 | −0.009 ± 0.012 |
t test | P < 10−22 | P < 10−7 | P < .043 | P < .054 |
Relative susceptibility (ppm) (per lesion type per subject) | 0.014 ± 0.010 | −0.015 ± 0.009 | – | – |
t test | P < .0004 | P < .004 | – | – |
↵a The null hypothesis of the t test is that the mean of relative susceptibility = 0. The significance level is .0083 after correcting multiple comparisons of 6 using the Bonferroni method.