Two MRI scans may help tell a returning tumor from radiation damage
Original title: Susceptibility Weighted and Perfusion Imaging for Differentiating Recurrence and Radiation Necrosis in Post-Operative Malignant Brain Tumors: A Retrospective Cohort 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 a look back at records from people, not a trial, and it was done at one hospital only.
The short version
Two kinds of MRI scans may help doctors tell a tumor coming back from damage left by radiation.
What was studied. Doctors at one hospital looked back at the records of 37 people with brain tumors. The records covered 11 years. The team checked two kinds of MRI scans, called perfusion imaging and SWI.
What they found. Perfusion imaging found radiation effects in 62.2% of the cases. SWI found radiation damage in 64.9%. Using both scans together worked better at ruling out a tumor coming back. 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 was the most common tumor type in this group.
What this means, and what it doesn't
What it could mean: After radiation, a spot on a scan can be a tumor coming back or damage from the treatment. The two look alike. This study suggests these scans, used together, may help doctors tell them apart. That could help you and your doctor plan the next step.
What it doesn't mean: This is not a treatment, and it is not a cure. It is an early look back at records from one hospital, not a planned trial. Only 37 people were included, which is a small group. The authors say larger studies at more hospitals are still needed. These scans are not yet a proven way to answer this question, so your care team will still use other information too.
Source: PubMed, January 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.