A look back at Gamma Knife use at one hospital
Original title: Longitudinal trends in Gamma Knife radiosurgery utilization across multiple technological generations: A Single-Institution Observational Study.
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.
This was a look back at records of care already given, not a test of a new treatment.
The short version
One hospital found it used stereotactic radiosurgery: Radiation aimed at a small target, in one visit or a few. There is no cutting, despite the name. See the glossary radiosurgery more often over the years.
What was studied. stereotactic radiosurgery: Radiation aimed at a small target, in one visit or a few. There is no cutting, despite the name. See the glossary radiosurgery is a focused radiation treatment for the brain. Doctors at one hospital reviewed their records from 1998 to 2025 and counted first treatments, repeat treatments, and the reasons for each.
What they found. In all, 6,201 patients had 7,267 treatment courses. Cancer that had spread to the brain was the main reason, in 2,991 patients, or 48.2%. Total use grew over the years, and repeat treatments grew the most.
What this means, and what it doesn't
What it could mean: This shows focused radiation stayed a common part of brain care at this hospital. It also shows that some people had it more than once. If you have brain metastases, you can ask your care team whether focused radiation fits your case.
What it doesn't mean: This is not a new treatment, and it is not a cure. It only counts how often one hospital gave treatment. It does not show that any machine or method works better. The authors say their results cannot prove that newer machines caused the changes. This is one hospital, so other places may look different.
Source: PubMed, October 1, 2026 · Read the original
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