Table 3.
Default calculation settings for each software platform along with the harmonised settings used in this study
| Calculation settings | LIFEx | IBEX | PyRadiomics | CERR | Harmonised settings (this study) |
|---|---|---|---|---|---|
| Histogram | |||||
| Number of grey levels | 400 | 256 | Bin width 25 | Bin width 25 | 64 |
| Lower bound | − 1000 | 0 | Minimum | 0 | Minimum |
| Upper bound | 3000 | 4096 | Maximum | 500 | Maximum |
| GLCM | |||||
| Number of grey levels | 400 | 100 | Bin width 25 | Bin width 25 | 64 |
| Lower bound | − 1000 | 0 | Minimum | 0 | Minimum |
| Upper bound | 3000 | 2100 | Maximum | 500 | Maximum |
| Directions | 13 | 13 | 13 | 4 | 13 |
| Offset | 1 | 1, 4 and 7 | 1 | 1 | 1 |
| Symmetric | Yes | Yes | Yes | Yes | Yes |
| NGTDM | |||||
| Number of grey levels | 400 | 256 | Bin width 25 | Bin width 25 | 64 |
| Lower bound | − 1000 | 0 | Minimum | 0 | Minimum |
| Upper bound | 3000 | 4096 | Maximum | 500 | Maximum |
| Distance | 1 | 2 | 1 | 1 | 1 |