Table 3. The selected 19 features in the radiomics descriptor.
| Filter operation | Radiomics category | Radiomics feature | Statistics |
|---|---|---|---|
| Wavelet-LLL | GLRLM | Short run low gray level emphasis | 10th percentile |
| Log-sigma-2-0-mm-3D | GLRLM | Run variance | Kurtosis |
| Wavelet-HHL | GLCM | IMC1 | 90th percentile |
| Wavelet-LLL | GLCM | Maximum probability | Skewness |
| Wavelet-HHH | GLDM | Dependence entropy | Interquartile range |
| Wavelet-LHH | GLCM | Correlation | Skewness |
| Wavelet-LLL | GLSZM | Small area low gray level emphasis | 10th percentile |
| Wavelet-LHH | First order | Median | Interquartile range |
| Log-sigma-2-0-mm-3D | GLSZM | Small area emphasis | Maximum |
| Wavelet-HHL | GLSZM | Zone entropy | Standard deviation |
| Wavelet-LHH | GLSZM | Zone entropy | Interquartile range |
| Wavelet-LHL | GLRLM | Run length non uniformity | Kurtosis |
| Log-sigma-2-0-mm-3D | GLDM | Large dependence low gray level emphasis | Standard deviation |
| Wavelet-HHH | GLSZM | High gray level zone emphasis | Interquartile range |
| Log-sigma-1-0-mm-3D | GLCM | Inverse variance | Interquartile range |
| Wavelet-LHH | GLCM | Inverse variance | Skewness |
| Wavelet-HLL | GLRLM | Gray level variance | Kurtosis |
| Wavelet-LLH | First order | Uniformity | Interquartile range |
| Log-sigma-2-0-mm-3D | First order | Energy | Skewness |
Wavelet-LLL, wavelet-low low low frequency; Wavelet-HHL, wavelet-high high low frequency; Wavelet-HHH, wavelet-high high high frequency; Wavelet-LHH, wavelet-low high high frequency; Wavelet-LHL, wavelet-low high low frequency; Wavelet-HLL, wavelet-high low low frequency; Wavelet-LLH, wavelet-low low high frequency; GLRLM, gray-level run-length matrix; GLCM, gray-level cooccurrence matrix; GLDM, gray-level dependence matrix; GLSZM, gray-level size zone matrix.