X-ray computed tomography (CT) is a powerful imaging technique that uses x-rays to create detailed cross-sectional images of the human body or objects. It generates a series of 2-dimensional images taken from different angles around the body, which are then processed by a computer to create a 3-dimensional image. This technology is commonly used in medical diagnostics to identify and visualize internal structures, such as organs and bones, and to detect abnormalities or diseases. X-ray CT is also used in various other fields, including engineering, archaeology, and materials science, for non-destructive testing and analysis.