PET-CT scanning involves positron emission tomography (PET scanning), and computed tomography (CT) combined into one machine.
Glucose is an essential molecule for almost all cells. Interestingly cancer cells have a much faster uptake of glucose in comparison with healthy cells. After injecting a radioactive glucose, it accumulates mainly in cancerous areas which can be detected by a PET-CT.
Before the exam, the patient fasts for at least 6 hours. The whole procedure can last up to 2 hours.
A PET-CT scan shows information about the form and size of tumors as wells as the activity.
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