New dye could sharpen PET scans for recurrent brain cancer
NCT ID NCT04044937
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 2 times
Summary
This study tested whether a special dye called fluoroethyltyrosine (FET) can improve PET scans for detecting brain tumors that have come back. 143 people with suspected recurrent brain tumors received an injection of FET before their PET scan. The goal was to see if FET-PET could accurately tell the difference between tumor regrowth and harmless treatment-related changes.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
F-18 Fluoroethyltyrosine (FET)
What this could lead to
If successful, this imaging agent could help doctors more accurately detect recurrent brain tumors on PET scans, leading to better treatment decisions.
What could go wrong
This is a phase 2 trial, so results are still preliminary. The dye may not prove significantly better than current imaging methods, and its availability may be limited.
Disclaimer
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
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University of California, San Francisco
San Francisco, California, 94115, United States