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Dictionary of Cancer Terms

View in Spanish: Flúor F 18 EF5

Fluorine F 18 EF5 (FLOR-een)
A substance 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 is a type of radiopharmaceutical. Also called 18F-EF5.

Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.