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NCI Dictionary of Cancer Terms

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NCI Dictionary of Cancer Terms



fluorine F 18 EF5  listen  (FLOOR-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.