A CT (computed tomography) scan is a diagnostic imaging exam that uses X-ray technology to produce detailed images of the inside of the body. It combines a series of X-ray images taken from different angles around the body and uses computer processing to create cross-sectional images (slices) of the bones, blood vessels, and soft tissues inside the body. CT scans can be used to visualize nearly all parts of the body, including the bones, muscles, organs, and blood vessels. They are used to diagnose disease or injury as well as to plan medical, surgical, or radiation treatment. CT scans can also be used for fluid or tissue biopsies or as part of preparation for surgery or treatment. CT scans are particularly well-suited to quickly examine people who may have internal injuries from car accidents or other types of trauma. CT scans can help doctors detect a wide range of health conditions, including internal injuries and bleeding, tumors, blood clots, and other internal injuries or damage. CT scans may be performed with and without contrast agents to improve the radiologists ability to find any abnormalities.