Answer: A PET Scan is Positron emission tomographic scan that enables visualization of internal body organ/ tissue functioning, and metabolic processes to aid in adequate diagnosis of the disease. The system detects gamma rays emitted by a positron emitting radionuclide also referred to as a radiotracer, which is introduced in the body on a biologically active molecule, as a FDG, fludeoxyglucose.
The basic steps involved in the scanning have been shown in the figure attached.
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