ESTRO 2025 - Abstract Book

S670

Clinical - CNS

ESTRO 2025

Figure 1: Local-recurrence and radionecrosis-free survival

Table 1: Uni- and multivariable Cox regression analyses of risk factors for local recurrence and symptomatic radionecrosis, per metastasis *Recent is defined as within 2 months from SRT Conclusion: LINAC-based SIMT SRT is a safe and effective treatment modality for patients with multiple BMs. The the distance between BM and isocenter is not associated with a higher risk of local recurrence or symptomatic radionecrosis.

Keywords: brain metastasis, single-isocenter, stereotacticRT