What is a primary use of Positron Emission Tomography (PET) scan?

A primary use of Positron Emission Tomography (PET) scan is in the detection of cancer. PET scans provide detailed images of the body's metabolic processes by using radiotracers, which are injected into the patient. These tracers emit positrons that are captured by the scanner, allowing for visualization of areas with increased metabolic activity, which is characteristic of cancer cells. This capability is crucial for identifying tumors, assessing their size, and evaluating whether cancer has spread to other parts of the body. In contrast, while PET scans can provide some insights into other conditions, their strongest and most common application is in oncology for cancer detection and monitoring treatment efficacy.