FDG uptake in PET scans refers to the measurement of the amount of fluorodeoxyglucose (FDG) taken up by cells in the body. FDG is a radioactive glucose analog that is injected into the body prior to the PET scan.
The amount of FDG uptake in different tissues reflects the metabolic activity of those tissues. Cancer cells, for example, have higher metabolic rates than normal cells and therefore take up more FDG. As a result, areas of increased FDG uptake on a PET scan may indicate the presence of cancer or other abnormal tissues.
Interpretation of FDG uptake in PET scans requires correlation with other imaging studies, clinical history, and sometimes biopsy results to determine the underlying cause of the abnormal findings. Overall, FDG uptake in PET scans can provide valuable information for diagnosis, staging, and monitoring of various diseases, including cancer.
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