A new MRI map may help tell tumor regrowth from radiation damage
Original title: Late enhancement and washout maps for distinguishing tumor progression from radiation necrosis in malignant brain tumors: an exploratory study.
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 from a small group of patients, not a treatment.
The short version
A new kind of MRI map may help doctors tell a growing tumor from radiation damage.
What was studied. Doctors looked at 33 people with brain tumors who were getting radiation and chemo. Each follow-up scan included a new MRI map that tracks how fast dye washes out of tissue.
What they found. Of the 33 people, 23 had the tumor come back. Six had radiation damage, and four had both at once. The washout number was 31 % when the tumor was growing, 35 % when both were present, and 10 % for radiation damage.
What this means, and what it doesn't
What it could mean: This map may give doctors one more clue when a scan is hard to read. It could help them decide if a new spot is tumor growth or damage from treatment. The study authors suggest using it along with other scan measures, not alone.
What it doesn't mean: This is not a treatment, and it is not a cure. It was a first, exploratory study at one clinic with only 33 people. The map was not compared head to head with other tests in a large trial. It is not a standard scan your doctor can order today.
Source: PubMed, October 15, 2026 · Read the original
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