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)

First Known Use of positron-emission tomography

1976, in the meaning defined above

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The first known use of positron-emission tomography was in 1976

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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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