Table 3.
Feature selection results and LASSO coefficient
| Data | ICG-R15 | Features (Training set) | Coefficient |
|---|---|---|---|
| MRI | ICG-R15 ≤ 10% vs. ICG-R15>10% | original_glszm_ZoneVariance | 0.105246 |
| original_shape_SurfaceVolumeRatio | 0.015642 | ||
| original_firstorder_Minimum | -0.018612 | ||
| original_glrlm_LongRunHighGrayLevelEmphasis | -0.063476 | ||
| original_shape_Sphericity | -0.118149 | ||
| ICG-R15 ≤ 20% vs. ICG-R15>20% | original_firstorder_Kurtosis | 0.111839 | |
| original_shape_SurfaceVolumeRatio | 0.083486 | ||
| original_glszm_ZoneVariance | 0.065786 | ||
| original_glszm_SmallAreaLowGrayLevelEmphasis | 0.063575 | ||
| original_glszm_LargeAreaHighGrayLevelEmphasis | 0.05589 | ||
| original_glcm_InverseVariance | 0.034796 | ||
| original_ngtdm_Contrast | 0.033712 | ||
| original_shape_Sphericity | -0.025289 | ||
| original_firstorder_Minimum | -0.100263 | ||
| ICG-R15 ≤ 30% vs. ICG-R15>30% | original_firstorder_Kurtosis | 0.099461 | |
| original_glszm_ZoneVariance | 0.055393 | ||
| original_glszm_LargeAreaHighGrayLevelEmphasis | 0.029222 | ||
| original_glszm_SmallAreaLowGrayLevelEmphasis | 0.003266 | ||
| original_glszm_SizeZoneNonUniformity | -0.000478 | ||
| original_glszm_SmallAreaEmphasis | -0.008009 | ||
| original_shape_LeastAxisLength | -0.038956 | ||
| CT | ICG-R15 ≤ 10% vs. ICG-R15>10% | original_glcm_Correlation | 0.061806 |
| original_glszm_ZoneEntropy | 0.030831 | ||
| original_firstorder_Energy | -0.096018 | ||
| original_glszm_SmallAreaEmphasis | -0.109115 | ||
| original_firstorder_RootMeanSquared | -0.126984 | ||
| ICG-R15 ≤ 20% vs. ICG-R15>20%* | original_firstorder_TotalEnergy | 0.397737 | |
| original_shape_SurfaceVolumeRatio | 0.316305 | ||
| original_firstorder_Kurtosis | 0.086403 | ||
| original_ngtdm_Strength | 0.074451 | ||
| original_shape_Maximum3DDiameter | -0.074731 | ||
| original_glcm_ClusterShade | -0.088621 | ||
| original_firstorder_Energy | -0.091037 | ||
| original_glszm_SmallAreaEmphasis | -0.112469 | ||
| original_shape_Maximum2DDiameterColumn | -0.12909 | ||
| original_firstorder_RootMeanSquared | -0.354511 | ||
| ICG-R15 ≤ 30% vs. ICG-R15>30% | original_shape_SurfaceVolumeRatio | 0.048541 | |
| original_glszm_SmallAreaLowGrayLevelEmphasis | 0.016216 | ||
| original_shape_Maximum2DDiameterSlice | -0.009696 | ||
| original_firstorder_Energy | -0.010984 | ||
| original_firstorder_90Percentile | -0.021431 |
* Top 10 features are listed in the table for the comparison between group ICG-R15 ≤ 20% and group ICG-R15>20% based on CT images