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    Physics A-Level

    Positron-emitting radionuclide

    What Positron-emitting radionuclide means in Physics A-Level, as defined for OCR.

    Definition of Positron-emitting radionuclide

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    Reference: OCR

    A substance, often fluorine-18 in fluorodeoxyglucose, that is administered and taken up by metabolically active cells, emitting a positron that travels a short distance before annihilating with an electron.
    OCR · Diagnostic methods in medicine (study guide)

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