Figure 2
From: Stereotactic radiosurgery for brain metastases: analysis of outcome and risk of brain radionecrosis
Risk of brain radionecrosis after stereotactic radiosurgery for brain metastases in relation to brain volumes receiving 12 Gy (V12 Gy) stratified for quartiles (Q1-Q4). The risk increased significantly through Q1-Q4, corresponding to V12 Gy < 3.3 cm3, 3.3-5.9 cm3, 6.0-10.9 cm3, and >10.9 cm3, respectively. The actuarial risk at 1 year was 0% for Q1, 16% for Q2, 24% for Q3, and 51% for Q4