Table 1.
Radiomic features extracted
| Number of features | Range (HU) | Bin width | Number of bins | Total number of features | |||
|---|---|---|---|---|---|---|---|
| RF1 | First-order statistics | 19 | -1,020 | 180 | 5 | 240 | 19 |
| RF2 | GLCM | 24 | -1,020 | 180 | 5, 25, 50 | 240, 48, 24 | 72 |
| GLSZM | 16 | -1,020 | 180 | 25, 100, 200 | 48, 12, 16 | 48 | |
Number of first-order statistics (RF1) and GLCM and GLSZM (RF2) features extracted with PyRadiomics tool together with range of Hounsfield unit (HU), bin width, number of bins used, and the resulting total number of features extracted for each type. GLCM Grey-level cooccurrence matrix, GLSZM Gray-level size zone matrix, HU Hounsfield unit, RF1 First-order radiomic features, RF2 Second-order radiomic features