About Positron Emission Tomography (PET)
Positron Emission Tomography (PET) imaging is a diagnostic procedure used to visualize metabolically active tissues. PET is a medical imaging technology that images the biology of disorders at the molecular level before anatomical changes are visible.
During a PET scan, a tracer is put into a vein in your arm. The tracer then moves throughout your body, eventually collecting in a specific organ or tissue. The camera then records this tracer and turns the recording into images on the screen. The pictures produced can identify several forms of cancer, damaged heart tissue, and brain disorders including Alzheimer’s, Parkinson’s, and epilepsy.
Preparing For Your Positron Emission Tomography Procedure
Please carefully follow any preparation instructions given to you prior to your PET scan. Dietary instructions are particularly important since eating before your exam can significantly decrease the absorption of the FDG tracer. In turn, this will decrease the amount of radioactivity uptake in abnormal cells and generate a suboptimal scan.
American College of Radiology
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