It implies use of X-rays for cross-sectional evaluation of brain, skull and spine. In this method, X-rays are emitted in a circular form to the body and images are acquired and created by computer software to evaluate interior structure of the body.
Today, it is used especially for traumas in the neurosurgery discipline. CT is scanned to evaluate both structure of bones and whether there is a trauma-derived damage in soft tissues (brain, nerves, spinal cord etc.).