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Positron Emission Tomography (PET) is a diagnostic examination that involves the acquisition of physiologic images based on the detection of radiation from the emission of positrons. Positrons are tiny particles emitted from a radioactive substance administered to the patient. The subsequent images of the human body developed with this technique are used to evaluate a variety of diseases. PET Scanner: PET scanner has multiple rings of detectors that record the emission of energy from the radioactive substance in your body and permit an image of your body to be obtained. There are whole body scanners and scanners which can scan only the brain. The images are displayed on the monitor of a nearby computer. |