Psyche M.D.-PET scan


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Term: PET scan
Definition (Myers): A visual display of brain activity that detects where a radioactive form of glucose goes whlie the brain performs a given task.
Definition (alternative): a nuclear medicine imaging technique which produces a three-dimensional image or picture 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. Images of tracer concentration in 3-dimensional space within the body are then reconstructed by computer analysis.*
Contextual explanation: PET scan shows the brain's consumption of the sugar glucose. When we consume sugar glucose our brain becomes radioactive and these parts glow through PET scan. Thus, researchers can see which part of the brain active and working when the participant is solving math problems or listening to music or thinking about something.
Related terms and concepts:
MRI: a technique that uses magnetic fields and radio waves to produce computer generated images that distinguish among different types of soft tissue; allows us to see structures within the brain.
CT: A series of x-ray photographs taken from different angles and combined by computer into a composite representation of a slice through the body.
EEG: an amplified recording of the waves of electrical activity that sweeps across the brain's suface. These waves ar emeasured by electrodes placed on the scalp.

Psyche M.D.-PET scan - The NeuronPsyche M.D.-PET scan - The Neuron
Related websites:
What is positron emission tomography?
PET scans
Edited by:Sophia



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