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Positron emission tomography (PET) is a medical procedure that uses specific types of radioisotopes, called positron emmiters to obtain the brain’s inner structure images and information about their functions. In Positron emission tomography, a substance is injected into the blood which works its way into the structure of the brain to measure activity in individual’s brain. For example, this method can show which portion of the brain is ore active when an individual performs mathematical calculations. Positron emission tomography scanning may also reveal signs of such diseases, as stroke, brain tumors, and epilepsy. This PET procedure is used mostly in research scenarios.
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