MODERN APPROACHES TO POSITRON EMISSION TOMOGRAPHY

Positron emission tomography (PET)[1] is a functional imaging technique that uses radioactive substances known as radiotracers to visualize and measure changes in metabolic processes, and in other physiological activities including blood flow, regional chemical composition, and absorption. Different tracers are used for various imaging purposes, depending on the target process within the body. For example, 18F-FDG is commonly used to detect cancer, NaF18F is widely used for detecting bone formation, and oxygen-15 is sometimes used to measure blood flow.

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