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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
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.
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Word History and Origins
Origin of positron emission tomography1
First recorded in 1975–80
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Example Sentences
Another highly regarded method was PET, or positron emission tomography.
From The Daily Beast
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