Even normal physiological conditions can cause elevated fluorine-18 fluorodeoxyglucose (FDG) uptake in several locations, such as the brain, heart, skeletal muscle, urinary system, gastrointestinal system, brown fat, lymphatic tissue, liver, spleen, thyroid gland, thymus, tongue, salivary glands, breast tissue, gonads, uterus, and bone marrow. Detailed knowledge of physiological FDG uptake is crucial for correct evaluation of positron emission tomography/computed tomography…
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