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Table 4: Pearson correlation coefficients among method differences in volume estimation of tissue outside the lesion regions and WML size^{^a}
Method GM WM CSF
H1 
    ANN 0.77 −0.74 0.83
    FCM 0.82 −0.80 0.71
    FANTASM 0.80 −0.73 0.66
    FAST 0.86 −0.93 0.97
    SPM5 0.11 0.51^{^b} −0.30^{^b}
    SPM8 −0.57^{^b} 0.95 −0.77
H2 
    ANN 0.85 −0.92 0.93
    FCM 0.71 −0.84 0.94
    FANTASM 0.66 −0.82 0.87
    FAST 0.33^{^b} −0.46^{^b} 0.62^{^b}
    SPM5 −0.43^{^b} 0.18^{^b} 0.65^{^b}
    SPM8 0.16^{^b} −0.37^{^b} 0.30^{^b}
H3 
    ANN 0.07 −0.16^{^b} 0.79
    FCM 0.50 −0.77 0.89
    FANTASM 0.17 −0.57^{^b} 0.87
    FAST 0.45 −0.73 0.89
    SPM5 −0.78^{^b} 0.72 0.14^{^b}
    SPM8 −0.64^{^b} 0.72 −0.01^{^b}
↵a Correlation was computed for each method and hospital separately. All values were found to be significant (P value <.05) unless otherwise noted.
↵b Not significant.