Dictionary
positron–emission tomography
noun
Definition of POSITRON-EMISSION TOMOGRAPHY
: tomography in which a cross-sectional image of regional metabolism is obtained by a usually color-coded representation of the distribution of gamma radiation given off in the collision of electrons in cells with positrons emitted by radionuclides incorporated into metabolic substances that have been administered (as by injection)
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First Known Use of POSITRON-EMISSION TOMOGRAPHY
1976
Medical Dictionary
positron–emission tomography
noun
Medical Definition of POSITRON–EMISSION TOMOGRAPHY
: tomography in which an in vivo, noninvasive, cross-sectional image of regional metabolism is obtained by a usually color-coded cathode-ray tube representation of the distribution of gamma radiation given off in the collision of electrons in cells with positrons emitted by radionuclides incorporated into metabolic substances—abbreviation PET
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