A PET scan may help map high grade brain tumors
Original title: Prostate specific membrane antigen (PSMA) PET/CT for radiation planning and response assessment in intracranial high-grade gliomas.
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 an early look at scans in a small group of people, not a proven test yet.
The short version
A scan called PSMA PET may show brain tumor tissue that an MRI does not show.
What was studied. Doctors looked at Twenty-seven patients with high grade brain tumors who had a PSMA PET scan. For 19 of them, the scan was used to help plan radiation. For 8 of them, it was used to check if the tumor was growing back.
What they found. In the radiation planning group, every tumor spot seen on MRI also lit up on the PET scan. In 4 patients (20%), the PET scan lit up a bigger area than the MRI did. After radiation, the scan signal dropped by 25.8%, and in the second group the scan correctly sorted growing tumor from tissue damage in 88% of patients.
What this means, and what it doesn't
What it could mean: This scan might help doctors aim radiation at all of the tumor. It might also help tell a growing tumor apart from changes caused by treatment. Both are hard questions for doctors today.
What it doesn't mean: This does not mean a new treatment. It was a small, early study of Twenty-seven people, and it was about pictures, not about care that helps you live longer. This scan is not standard care for brain tumors right now. It is not a cure or a promise of one.
Source: PubMed, August 17, 2026 · Read the original
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