Weekly brain scans show changes in the memory area during radiation
Original title: Weekly hippocampal diffusion changes during partial-brain radiation therapy for high-grade glioma: associations with dose and early memory change.
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 study only watched brain scans in people, so it is not a treatment yet.
The short version
During radiation, scans showed the brain's memory area changing a little each week.
What was studied. Forty-five adults with high grade glioma: A tumor that starts in the glial cells. Those are the support cells of the brain and spinal cord. Gliomas are given a grade from 1 to 4. The grade says how the tumor is expected to act. See the glossary joined an imaging study. They had MRI scans before radiation and once a week during it. All had radiation of 60 Gy in 30 treatments, plus temozolomide: A chemotherapy taken as a capsule, used for some brain tumors. Your team checks your blood counts while you are on it. See the glossary.
What they found. Scans of the hippocampus, the brain's memory area, changed more each week. The change was 0.5% in Week 1 and 12% by Week 6. Memory areas that were planned to get a higher radiation dose changed more. Another scan measure held steady through Week 3, then dropped in Weeks 4 to 6.
What this means, and what it doesn't
What it could mean: Scans may be able to show changes in the memory area while radiation is still going on. If that holds up in future studies, it could help doctors watch this area during treatment. It may also support planning radiation to spare that part of the brain.
What it doesn't mean: This does not mean a new treatment is ready. It was a study that watched scans, not a test of therapy. The scan changes do not prove that memory will get worse. Nothing here changes care you can get today, and it is not a cure.
Source: PubMed, October 13, 2026 · Read the original
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