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PET scan (lung: reducing agent) - Definition


A PET scan, which stands for positroni emission tomography, is a medical imaging technique that aims to study the activity of an organ. The process consists of injecting a tracer into the body, that is a very small volume of radioactive agent, harmless to the body, and then acquiring images of the organ one hour later with a special type of camera that detects emitted radiation. It is primarily used in oncology, with the tracer concentration of certain areas revealing the presence, activity, and spread of cancerous tumors. A PET scan can also be repeated for monitoring the efficacy of treatment, as well as in cases of neurodegenerative disorders of the brain, such as Alzheimer's or Parkinson's disease, and when focusing on the heart in order to assess the progression of lesions following a myocardial infarction.