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POSITRON
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I. (noun)
Sense 1
Meaning:
An elementary particle with positive charge; interaction of a positron and an electron results in annihilation
Synonyms:
Classified under:
Nouns denoting natural objects (not man-made)
Hypernyms ("positron" is a kind of...):
antilepton (the antiparticle of a lepton)
Context examples:
Also called F 18 sodium fluoride positron emission tomography and fluorine F 18 sodium fluoride PET.
(F-18 NaF PET, NCI Dictionary)
Acting as a methyl donor, methionine C 11 is incorporated into macromolecules, where it serves as a positron emission tomography (PET) imaging agent for detecting tumors with high rates of protein synthesis.
(Methionine C 11, NCI Thesaurus)
An imaging technique that utilizes positron emission tomography to produce a three-dimensional image of functional processes in the body.
(FDG-Positron Emission Tomography, NCI Thesaurus)
Upon binding, the radioisotope moiety may be detected using positron emission tomography (PET), thereby allowing the imaging and quantification of HER2-expressing tumor cells.
(Copper Cu 64-DOTA-Trastuzumab, NCI Thesaurus)
A radiopharmaceutical composed of the nonspecific perfusion agent ethylglyoxal bis(thiosemicarbazone) (ETS) linked to the beta-emitting, radioisotope copper Cu 62, with potential tumor imaging activity upon positron emitting tomography (PET).
(Copper Cu 62 Ethylglyoxal Bis(thiosemicarbazone), NCI Thesaurus)
As the proliferation of cancer cells is much higher than normal cells, tumor cells exhibit an increased rate of C-11 choline uptake and incorporation, allowing tunor imaging with positron emission tomography (PET).
(Carbon C 11 Choline, NCI Thesaurus)
A radiopharmaceutical containing an analogue of tryptophan, alpha-methyltryptophan (AMT), labeled with carbon 11 (11C), used to measure serotonin synthesis in the human brain using positron emission tomography (PET).
(Carbon C 11 Alpha-methyltryptophan, NCI Thesaurus)
Following exposure to this agent, EGFR expression status can be determined and EGFR overexpressing tumor cells can be visualized using positron emission tomography (PET) imaging.
(Carbon C 11 Erlotinib Hydrochloride, NCI Thesaurus)
Although the mechanism is unclear, carbon-11 acetate preferentially accumulates in tumor tissue, serving as a tracer for imaging tumors with positron emission tomography (PET).
(Carbon-11 acetate, NCI Thesaurus)
A radiopharmaceutical containing N-desmethyl loperamide (dLop) labeled with carbon 11 (11C), used to measure the activity of efflux transporter P-glycoprotein (P-gp) in positron emission tomography (PET).
(Carbon C 11 N-desmethyl-Loperamide, NCI Thesaurus)
