A CT scan (computerized tomography scan) is conducted with the use of computers and x-ray machines to create cross-sectional images of the body. These images are very useful for doctors, as they provide more detail than normal x-rays, showing blood vessels and soft tissues as well as bones. CT scans can be used to look at various parts of the body, including the heart, spine, abdomen and chest and can be used for a number of reasons including diagnosing infections, fractures, tumours, and internal injuries. A CT scan can also be used to check how effectively treatment for conditions like heart disease and cancer is working.