Table 2.
The remaining features after a three-step feature selection methodology.
| Habitats | Number of features after step 1 | Number of features after step 2 | Selected features in habitat signature |
|---|---|---|---|
| Sagittal T2 | 96 | 11 | X_GLRLM_LRHGLE |
| Axial T1 | 93 | 9 | X_GLRLM_RP |
| Axial T2-FS | 97 | 11 | XLL_GLRLM_SRLGLE |
| Axial DWI b=0 | 102 | 14 | X_GLRLM_LRHGLE |
| Axial DWI b=800 | 99 | 13 | X_GLRLM_LRE, X_GLRLM_SRLGLE |
| ADC | 95 | 10 | X_GLCM_variance |
| Sagittal T1 enhanced-MRI |
97 | 8 | XLL_GLRLM_RLN |
| Axial T1 enhanced-MRI |
103 | 9 | XHH_GLRLM_RP, Surface_area, XLL_H_skewness, X_GLCM_dissimilarity |
| Coronal T1 enhanced-MRI |
73 | 10 | X_GLCM_homogeneity2 |
X, original image; XLL, original image filtered directionally with low-pass filter along x and y directions; XHH, original image filtered directionally with high-pass filter along x and y directions; H, histogram; LRHGLE, long run high gray level emphasis; RP, run percentage; SRLGLE, short-run low-gray level emphasis; LRHGLE, long-run high-gray level emphasis; LRE, long-run emphasis; RLN, run length non-uniformity.