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(b) Score index for radiosurgery in brain metastases (SIR)
| Score 0 | Score 1 | Score 2 | |
|---|---|---|---|
| Age (years) | ≥60 | 51–59 | <= 50 |
|
| |||
| KPS | ≤50 | 60–70 | >70 |
|
| |||
| Systemic disease status | Progressive disease | Progressive-stable disease | Complete clinical remission—no evidence of disease |
|
| |||
| Largest lesion volume (cm3) | >13 | 5–13 | <5 |
|
| |||
| Number of lesions | ≥3 | 2 | 1 |
