Testing two radiation schedules for larger brain tumors

Brain tumors that spread from cancer elsewhere in your body can be hard to treat, especially when they're larger than 2 centimeters. This trial is testing two different ways to use focused radiation (called stereotactic radiosurgery) to treat these larger tumors. Both approaches aim to control the cancer while lowering the risk of side effects to healthy brain tissue.

Traditionally, doctors treated brain metastases with radiation to the whole brain, but this can damage memory and thinking. Focused radiation is better, but it's harder to get good results with larger tumors because doctors have to use lower doses to protect healthy brain tissue. This trial compares two focused radiation schedules to see which works better for these bigger tumors.