Testing focused radiation therapy for brain cancer spread

This trial is testing hypofractionated stereotactic radiotherapy (a highly focused form of radiation that targets only the cancer tumors in the brain) for patients newly diagnosed with a small number of brain metastases. The study wants to see if this precise treatment can effectively control the cancer while protecting your memory and thinking abilities—something that older, broader radiation approaches have struggled with.

Traditional whole-brain radiation therapy can shrink brain tumors, but it often damages memory and learning in the long term. This trial exists to see whether using a more targeted form of radiation—one that specifically avoids the memory centers of the brain—can treat the cancer effectively while reducing these thinking and memory problems.