MedicalTerminology DB

Meaning of 18F-EF5: A substance that is being studied in positron emission tomography (PET) imaging to detect tumor hypoxia (a low level of oxygen in the tumor).This may help predict how the tumor will respond to…

Definition of 18F-EF5

A substance that is being studied in positron emission tomography (PET) imaging to detect tumor hypoxia (a low level of oxygen in the tumor).This may help predict how the tumor will respond to treatment. It belongs to the family of drugs called radiopharmaceuticals. Also called fluorine F 18 EF5.

Written and maintained by James Murray Last updated July 21, 2026 Educational reference, not medical advice. Read the limitations.

For learning, not diagnosis. This glossary provides general educational information and is not a substitute for advice from a qualified healthcare professional. If you may be experiencing a medical emergency, contact local emergency services.