positron emission tomography

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noun

the process of producing a PET scan.

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Compare PET scanner.

Origin of positron emission tomography

First recorded in 1975–80

Words nearby positron emission tomography

positive theology, positive vetting, positivism, positivity, positron, positron emission tomography, positronium, posole, posology, poss., posse

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use positron emission tomography in a sentence

The United States and China announced new greenhouse emission targets late Tuesday night.
The U.S.-China Climate Deal Is Mostly Hot Air|Tim Mak|November 12, 2014|DAILY BEAST
The joint-announcement should also put to bed long-term disagreements between Beijing and Washington over emission targets.
Obama and Xi Jinping Say They’ll Work Together to Save Environment|Ben Leung|November 12, 2014|DAILY BEAST
The uncertainty in the positron counts are huge at the high energy end of the AMS-02 results.
Still No Dark Matter from Space Station Experiment|Matthew R. Francis|September 21, 2014|DAILY BEAST
In fact, the data seem to show positron counts leveling off at high energy, but things are still pretty messy.
Still No Dark Matter from Space Station Experiment|Matthew R. Francis|September 21, 2014|DAILY BEAST

However, researchers measured a decrease in X-ray emission last year: something new was blocking the light from reaching us.
The Supermassive Black Hole Smokescreen|Matthew R. Francis|June 22, 2014|DAILY BEAST
On the other hand, if too thin the emission is comparatively easy, but lacks intensity and is termed "hollow."
Antonio Stradivari|Horace William Petherick
The violin was of good reputation for its tone of fine quality, quantity and ease of emission.
Antonio Stradivari|Horace William Petherick
The emission of odors and acute sensibility to them is the only presumable agency at work in those instances.
Man And His Ancestor|Charles Morris
Thereupon his anxiety became extreme, and simultaneously he experienced his first seminal emission.
The Sexual Life of the Child|Albert Moll
On one occasion, however, he had a seminal emission during the night in association with a feeling of anxiety.
The Sexual Life of the Child|Albert Moll

British Dictionary definitions for positron emission tomography

positron emission tomography

noun

a technique for assessing brain activity and function by recording the emission of positrons from radioactively labelled substances, such as glucose or dopamine

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for positron emission tomography

positron emission tomography

Tomography in which a computer-generated image of metabolic or physiologic activity within the body is produced through the detection of gamma rays that are emitted when introduced radionuclides decay and release positrons. The images are used in the evaluation of coronary artery disease, epilepsy, and other medical disorders.