RecruitingPhase 2Radiation therapyUCSD Image-Guided Cognitive-Sparing Radiosurgery for Brain MetastasesIn this proposal, the investigators introduce advanced diffusion and volumetric imaging techniques along with innovative, automated image parcellation methods to identify critical brain regions, incorporate into cognitive-sparing SRS, and analyze biomarkers of radiation response. This work will advance the investigators' understanding of neurocognitive changes after brain SRS and help create interventions that preserve cognitive-function in brain metastases patients.