positron emission tomography

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Related to positron emission tomography scanner: PET scan, positron emission tomography (PET) scan

positron emission tomography:

see PET scanPET scan
or positron emission tomography
, a medical imaging technique that monitors metabolic, or biochemical, activity in the brain and other organs by tracking the movement and concentration of a radioactive tracer injected into the bloodstream.
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positron emission tomography

[′päz·ə‚trän i¦mish·ən tō′mäg·rə·fē]
A technique that uses measurements of the back-to-back emission of gamma rays from the annihilation of positrons emitted by radioactive tracers to map the distribution of these tracers in the human body. Abbreviated PET.
References in periodicals archive ?
Phelps and his colleagues created the positron emission tomography scanner in 1974, two years before he came to the University of California, Los Angeles, where he now heads up various programs, officials said.
They want the government to announce a national framework for Positron Emission Tomography scanners, which can make a difference in at least one in four lung cancer cases.
Positron Emission Tomography scanners are also used to identify a range of other illnesses including heart disease and brain disorders, as well as cancer of the lungs and lymphoma.

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