POSITRON

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 Dictionary entry overview: What does positron mean? 

• POSITRON (noun)
  The noun POSITRON has 1 sense:

1. an elementary particle with positive charge; interaction of a positron and an electron results in annihilation

  Familiarity information: POSITRON used as a noun is very rare.

 Dictionary entry details 

• POSITRON (noun)

Sense 1

Meaning:

An elementary particle with positive charge; interaction of a positron and an electron results in annihilation

Classified under:

Nouns denoting natural objects (not man-made)

Synonyms:

antielectron; positron

Hypernyms ("positron" is a kind of...):

antilepton (the antiparticle of a lepton)

 Context examples 

An amino acid analog radiolabeled with fluorine F 18, a positron emitting isotope, used as a tracer in positron emission tomography (PET).

(F-18 Fluoroethyltyrosine, NCI Thesaurus)

F-18 16 alpha-fluoroestradiol is actively taken up in tumor cells expressing the estrogen receptor (ER), allowing visualization of ER-positive tumor cells with positron emission tomography (PET).

(F-18 16 alpha-fluoroestradiol, NCI Thesaurus)

Based on the size of the halo, the HAWC team concluded that Geminga positrons at these energies only rarely reach Earth.

(NASA’s Fermi Mission Links Nearby Pulsar’s Gamma-ray ‘Halo’ to Antimatter Puzzle, NASA)

A radioactive form of carbon that is used in positron emission tomography (PET) scanning.

(Carbon-11 acetate, NCI Dictionary)

A procedure that combines the pictures from a positron emission tomography (PET) scan and a computed tomography (CT) scan.

(PET-CT scan, NCI Dictionary)

Also called positron emission tomography scan.

(PET scan, NCI Dictionary)

A radioconjugate consisting of a lipophilic, neutral, bioreductive copper-bis(thiosemicarbazone) complex, copper-diacetyl-bis(N4-methylthiosemicarbazone) (Cu-ATSM), labeled with the beta-emitting radioisotope copper Cu 62, with hypoxia-selective and positron emitting tomography (PET) radioimaging activities.

(Copper Cu 62-ATSM, NCI Thesaurus)

Copper Cu 64 trastuzumab binds to the extracellular domain of human epidermal growth factor receptor 2 (HER2), allowing the detection of HER2 distribution using positron emission tomography (PET).

(Copper Cu 64 Trastuzumab, NCI Thesaurus)

The Cu 64 moiety may be detected using positron emission tomography (PET), thereby allowing the imaging and quantification of HER3-expressing tumor cells.

(Copper Cu 64-DOTA-Anti-HER3 Monoclonal Antibody U3-1287, NCI Thesaurus)

A radioconjugate consisting of a lipophilic copper(II)bis(thiosemicarbazone) labeled with the positron- and beta-emitting isotope (64)Cu with hypoxia-selective and antineoplastic activities.

(copper Cu 64-ATSM, NCI Thesaurus)