Frameless Gamma Knife radiation kept brain metastases in check
Original title: Frameless stereotactic radiosurgery in the management of brain metastases: long-term oncologic and toxicity outcomes.
How far along is this research?
- Lab cells
- Animals
- Review
- Tested in people
This was tested in people. That is the most reliable kind of research we share.
Gamma Knife radiation is already offered in hospitals today, and this report is about patients who received it.
The short version
In one hospital's records, frameless Gamma Knife radiation controlled brain tumors well and caused serious side effects in very few people.
What was studied. Doctors looked back at the records of 140 patients treated at their hospital between 2018 and 2024. Together these patients had 362 brain metastases, each treated in one session of frameless Gamma Knife radiation.
What they found. One year after treatment, 98% of the treated spots were still under control. At two years, it was 97%. One patient, which is 0.7%, had radiation damage to brain tissue that caused symptoms. Patients were followed for about 2.4 years.
What this means, and what it doesn't
What it could mean: Gamma Knife radiation used to rely on pins that hold a frame to the head. A frameless version is now offered. This report adds to earlier studies suggesting the frameless way works about as well. If Gamma Knife is an option for you, ask your care team which method they use and why.
What it doesn't mean: This is not a cure for cancer. It is about controlling spots in the brain, not curing the disease. This was one hospital looking back at its own past patients. It was not a trial that tested the two methods side by side. Numbers from one group of patients may not match what happens for you. Brain metastases can still come back in new places.
Source: PubMed, July 21, 2026 · Read the original
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