PET scans show more of a brain tumor, but wider surgery led to longer survival
Original title: Tumor boundary delineation in IDH-wildtype glioblastoma: A prospective comparative analysis of 11C-MET PET and FLAIR MRI in surgical decision-making.
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 watched in people at one hospital, and the scan is a helper for surgeons, not a proven treatment on its own.
The short version
A special scan found more tumor than a standard MRI, but people did better when surgeons removed a wider area.
What was studied. Doctors at one hospital studied people with a newly found glioblastoma: The fastest-growing type of glioma (grade 4). Treatment usually starts soon after diagnosis: surgery first, then radiation and chemotherapy. See the glossary. Each person had an MRI and a special scan called 11C-MET PET before surgery, and their results were compared with people who had other kinds of tumor surgery.
What they found. The PET scan always showed a bigger tumor area than the MRI did. The PET area matched the MRI FLAIR area in 91.2% of cases. In 8.8% of cases the PET area was larger. People who had the widest surgery went longer before the tumor grew again, 20 months compared with 14.9 months, and they lived longer, 24 months compared with 21.9 months.
What this means, and what it doesn't
What it could mean: For now, this supports using the PET scan as an extra tool, not the only guide. It may help a surgeon see tumor that spreads past the edge seen on MRI. But in this study, taking out a wider area still gave people more time.
What it doesn't mean: This does not mean PET guided surgery is better. It also does not mean this is a cure. This was one study at a single hospital, and people were not put into groups at random. It does not change what surgery you should have. Talk with your own care team about what fits your tumor and your health.
Source: PubMed, March 24, 2026 · Read the original
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