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Variable selection.
| Clinical Features | Radiomics Features |
|---|---|
| Time to SRS (days) | Grey-Level Dependence Matrix: Large Dependence High Gray-Level Emphasis |
| Primary Tumor Organ | Grey-Level Run Length Matrix: Long Run High Gray-Level Emphasis |
| Dose (Gy) | Shape: Maximum 3D Diameter |
| Age (years) | First Order: Uniformity |
| Conformity Index | Grey-Level Size Zone Matrix: Large Area High Gray-Level Emphasis |
| Cavity Volume | Neighboring Grey-Tone Difference Matrix: Strength |
| Gradient Index |
