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Comparing Stereotactic Radiosurgery Margin Treatment Approaches for the Treatment of Brain Metastases

Trial Status: active

This clinical trial compares stereotactic radiosurgery (SRS) using a 0mm margin treatment approach to SRS using a 2mm margin treatment approach for treating solid tumors that have spread to the brain (brain metastases). SRS is a type of external radiation therapy that uses special equipment to position the patient and precisely give a single large dose of radiation to a tumor. Radiation therapy uses high energy x-rays, particles, or radioactive seeds to kill cancer cells and shrink tumors. SRS using a 0mm margin treatment approach targets only the tumor while SRS using a 2mm margin treatment approach targets the tumor and also includes a small area surrounding the tumor. In the United States, there is no established standard margin for SRS. This trial may help determine whether one of these SRS treatment approaches is safer and/or more effective in treating patients with brain metastases than the other.