Positron emission tomography (PET) is a nuclear medicine, functional imaging technique that produces a three-dimensional image of functional processes in the body. The system detects pairs of gamma rays emitted indirectly by a positron-emitting radionuclide (tracer), which is introduced into the body on a biologically active molecule. Three-dimens...
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http://en.wikipedia.org/wiki/Positron_emission_tomography
(PET) A method of measuring brain function based on the detection of radioactivity emitted when positrons, positively charged particles, undergo radioactive decay in the brain. Computers then build three-dimensional images of changes in blood flow based on the amount of radiation emitted in different brain regions. The more brain activity, t...
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http://www.brainfacts.org/glossary
imaging technique used in diagnosis and biomedical research. It has proved particularly useful for studying brain and heart functions and certain ... [10 related articles]
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http://www.britannica.com/eb/a-z/p/99
(PET scanning) PET scanner. Credit: Yale University A medical diagnostic technique based on the detection of positrons emitted by labeled substances introduced into the body. PET scanning produces three-dimensional images that reflect the metabolic and chemical activi...
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<radiology> A highly specialised research imaging technique using short lived radioactive substances - usually those made with a cyclotron. This technique is very sensitive in picking up active tumour tissue but does not measure the size of it. ... Tomographic images are formed by computer analysis of photons detected from annihilation of pos...
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http://www.encyclo.co.uk/local/20973
(PET) a combination of computed tomography and scintillation scanning. Natural biochemical substances or drugs tagged with a positron-emitting radioisotope are administered to the subject by injection; the tagged substance (tracer) then becomes localized in specific tissues the same way its natural analogue does. When t...
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(also called PET imaging or a PET scan)a type of nuclear medicine imaging that uses small amounts of radioactive material to diagnose or treat a variety of diseases.
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http://www.encyclo.co.uk/local/21811
(PET) Type: Term Definitions: 1. creation of tomographic images revealing certain biochemical properties of tissue by computer analysis of positrons emitted when radioactively tagged substances are incorporated into the tissue. Radiotracers used in PET are analogues of physiologic or pharmaceutical agents into which positron-emit...
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http://www.medilexicon.com/medicaldictionary.php?t=92414
Positron emission tomography: PET. A highly specialized imaging technique that uses short-lived radioactive substances to produce three-dimensional colored images of those substances functioning within the body. These images are called PET scans and the technique is termed PET scanning. PET scanning provides information about the body's chemistry n...
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http://www.medterms.com/script/main/art.asp?articlekey=11912
[
n] - using a computerized radiographic technique to examine the metabolic activity in various tissues (especially in the brain)
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http://www.webdictionary.co.uk/definition.php?query=positron%20emission%20t
medical imaging technique in which radiopharmaceuticals are traced to reveal metabolic and physiological functions in tissues
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https://courses.lumenlearning.com/cuny-csi-ap-1/chapter/glossary-introducti
PET noun using a computerized radiographic technique to examine the metabolic activity in various tissues (especially in the brain)
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https://www.encyclo.co.uk/local/20974
Imaging technique that enables doctors to observe the metabolic activity of the human body by following the progress of a radioactive chemical that has been inhaled or injected, detecting gamma radiation given out when positrons emitted by the chemical are annihilated. The technique has been used to study a wide range of conditions, including schiz...
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https://www.encyclo.co.uk/local/21221
(PET) A method for studying the brain that involves injecting a radioactive substance, which collects in active brain areas.
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https://www.sparknotes.com/psychology/psych101/glossary/terms/
(PET) A test that uses information about the energy of certain elements in your body to show whether parts of the heart muscle are alive and working. A PET scan can also show if your heart is getting enough blood to keep the muscle healthy.
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https://www.texasheart.org/heart-health/heart-information-center/topics/a-z
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