A ""hot spot"" appears darker than other areas on a bone scan and indicates an area of increased metabolism.
Nuclear imaging is used during a bone scan to assist identify and monitor various bone diseases. In order to observe internal structures like bones, such as the bones in the body, nuclear imaging uses small amounts of radioactive chemicals (radiotracers), a particular camera that can detect the radioactivity, and a computer. These could be metabolic or other chemical activity levels. Hot spots are regions with higher intensity. These might exhibit high levels of radiotracer concentrations as well as intense chemical or metabolic activity.
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