Table 2.
Result category | CET1 | FLAIR | ADC | CBV |
---|---|---|---|---|
Individual features |
Sum entropy (mean) LLH GLCM dist = 3 (P = 0.0003) |
Mean absolute deviation LHH first order (P = 0.0023) High gray-level run emphasis (std)(P = 0.0003) |
Skewness HHH first order (P = 0.0008) |
Entropy (std) HHL GLCM dist = 1 (P = 0.0014) Long run high gray-level emphasis (mean) HHH GLRLM (P = 0.0003) |
P-value for each radiomic feature associated with outcome was calculated using univariate Cox proportional hazards regression.
Abbreviations: CET1 = contrast-enhanced T1-weighted imaging, FLAIR = fluid-attenuated inversion recovery, ADC = apparent diffusion coefficient, CBV = cerebral blood volume. H = high-pass filter, L = low-pass filter, GLCM = gray-level co-occurrence matrix, GLRLM = gray-level run-length matrix.