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Understanding Positron Emission Tomography: Advancing Medical Imaging
Positron Emission Tomography, commonly known as PET, is a powerful imaging technique that provides detailed insight into the functioning of the human body at the cellular and molecular level. Unlike conventional imaging methods that focus primarily on structural aspects, PET scans offer a unique view of physiological processes, helping medical professionals detect diseases, monitor treatment progress, and plan precise interventions.
At its core, PET imaging relies on the detection of gamma rays emitted indirectly by a tracer—a substance introduced into the body that accumulates in specific tissues. These tracers are typically composed of biologically active molecules labeled with radioactive isotopes. Once administered, the tracer travels through the bloodstream and concentrates in areas of high metabolic activity, such as the brain, heart, or tumor cells. The PET scanner then captures the radiation signals and converts them into highly detailed images, highlighting the functional activity…