Two sessions of focused radiation for brain metastases
Original title: Clinical outcomes and dosimetric factors associated with local control after two-fraction radiosurgery for brain metastases.
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 patients already treated, not a new treatment being tested.
The short version
Doctors looked back at patient records to see how well two sessions of focused brain radiation held tumors in check.
What was studied. Doctors reviewed the records of 86 patients with 193 brain metastases. All had been treated with focused radiation given in two sessions.
What they found. By 6 months, the treated spot started growing again in 11.5% of tumors. By 12 months, that number was 17.9%. New tumors appeared elsewhere in the brain in 33.2% by 6 months and 50.2% by 12 months. Tumors came back more often when the lowest dose reaching the target area was lower.
What this means, and what it doesn't
What it could mean: Two sessions of focused radiation kept most treated spots under control. How much dose reaches the whole target seems to matter. Patients can ask their radiation doctor how their plan covers the target.
What it doesn't mean: This does not mean a new treatment is here, and it is not a cure. The doctors only looked back at past records. They did not compare this schedule against other ways of giving radiation. New tumors still showed up in other parts of the brain for many patients. These findings may help doctors plan radiation, but they do not promise a longer life.
Source: PubMed, October 30, 2026 · Read the original
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