| SRT | Stereotactic Radiotherapy |
| OS | Overall Survival |
| SBRT | Stereotactic Body Radiotherapy |
| MSE | Mean Squared Error |
| RMSE | Root Mean Squared Error |
| MAPE | Mean Absolute Percentage Error |
| R² | R-squared |
| C-index | Concordance Index |
| SHAP | SHapley Additive exPlanations |
| GI | Gradient Index |
| CI | Conformity Index |
| BM | Brain Metastasis |