A new way to measure glioma on PET scans may add useful information
Original title: Multi-threshold volumetric 18F-FET PET for tumor detection and prognosis in primary glioma.
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 scans from people already treated, not a test of a new treatment.
The short version
Doctors looked at whether measuring the whole active area of a brain tumor on a PET scan tells them more than measuring just its hottest spot.
What was studied. Researchers at one hospital looked back at scans from 100 people who had already been treated for a glioma: A tumor that starts in the glial cells, the support cells of the brain and spinal cord. Gliomas are graded 1 to 4 by how fast they tend to grow. See the glossary, WHO Grade 2 to 4. Each person had a special PET scan called 18F-FET because it was not clear if their tumor was growing back or if the changes were from treatment.
What they found. The new whole area measurement was repeatable. Different runs of it gave close to the same answer. It spotted tumor about as well as the older hottest spot measurement did. People with a larger active area tended to live for a shorter time, though this link faded once other health details were taken into account.
What this means, and what it doesn't
What it could mean: This is a possible way to get more out of a PET scan that some patients already have. Measuring the whole active area, not just one point, might help doctors judge how much tumor is there and what to expect. It would be used alongside MRI and the older measurement, not instead of them.
What it doesn't mean: This is not a new treatment, and it is not a cure. It is a look back at old records from a single hospital, not a trial that tested anything on patients. The added value it found was small. Nothing here changes the scans or the care you get today, and it would need more study at other hospitals before it does.
Source: PubMed, June 12, 2026 · Read the original
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