Table 3.
The details of the selected hand-crafted radiomic features
| Feature | Transformation | Feature type | Feature value | r† | P value |
|---|---|---|---|---|---|
| F1 | Log-sigma-4–0-mm-3D | GLSZM | Small area low gray level emphasis | −0.299 | 0.004 |
| F2 | Wavelet-LHL | GLCM | Cluster shade | −0.202 | 0.054 |
| F3 | Wavelet-LHH | First order | Kurtosis | 0.289 | 0.006 |
| F4 | Wavelet-LHH | GLCM | Idn | 0.321 | 0.002 |
| F5 | Wavelet-HLL | First order | Root mean squared | −0.209 | 0.047 |
| F6 | Wavelet-HLL | Ngtdm | Complexity | −0.019 | 0.860 |
| F7 | Wavelet-HHH | First order | Median | 0.078 | 0.464 |
| F8 | Wavelet-HHH | First order | Skewness | 0.214 | 0.042 |
| F9 | Wavelet-HHH | GLSZM | Size zone non uniformity normalized | 0.178 | 0.091 |
†Spearman correlation coefficient with two-sided test
Log Laplacian of Gaussian, GLSZM gray-level size-zone matrix, GLCM gray-level co-occurrence matrix, Ngtdm neighborhood gray tone difference matrix