Two kinds of PET scans compared for telling two brain tumors apart
Original title: Comparative diagnostic performance of ¹⁸F-FLT and ¹⁸F-FDG PET for differentiating primary CNS lymphoma from glioblastoma, IDH-wildtype.
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.
Doctors looked back at scans from real patients, but this scan is not part of normal care.
The short version
Both scan types helped doctors tell brain lymphoma apart from glioblastoma: A glioma that is given grade 4, the highest grade. It grows fast. Treatment usually starts soon after it is found. It often means surgery, then radiation and chemotherapy. See the glossary.
What was studied. Doctors looked back at 58 people with brain tumors. 40 had glioblastoma: A glioma that is given grade 4, the highest grade. It grows fast. Treatment usually starts soon after it is found. It often means surgery, then radiation and chemotherapy. See the glossary, IDH-wildtype, and 18 had a lymphoma that starts in the brain. Each person had two kinds of PET scans, FLT and FDG, before treatment.
What they found. The FLT scan lit up every tumor. The FDG scan lit up 17 of 18 brain lymphomas (94%) and 25 of 40 glioblastomas (63%). The two scans were about equally good at telling the two tumor types apart. The FLT scan showed tumors more clearly because healthy brain tissue barely lights up on it.
What this means, and what it doesn't
What it could mean: Doctors may have another way to tell these two tumors apart before treatment starts. An FLT scan could help in cases where an FDG scan is not a good fit.
What it doesn't mean: This is not a treatment, and it is not a cure. It was a look back at old scans, not a planned study. FLT scans are not part of everyday care in most hospitals. Neither scan was right every time, so doctors still need a tissue sample to be sure.
Source: PubMed, September 27, 2026 · Read the original
This plain-language summary was written by AI and published automatically after passing our automatic safety checks. How we write.