fluorine F 18 EF5

Definition / meaning of fluorine F 18 EF5

A radioconjugate consisting of EF5, a fluorinated derivative of etanidazole, conjugated to fluorine F 18, a positron emitting isotope. EF5 binds to hypoxic tissue; conjugation to Fluorine F 18 allows imaging of hypoxic regions within tumors.

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The Web site of the National Cancer Institute (http://www.cancer.gov/)

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