CT scan is a noninvasive radigraphic technique called computed tomography. It is a test that applies computer technology and digital imaging techniques to X-ray studies to produce images of cross section of the body. It is a medical imaging method employing tomography where digital geometry processing is used to generate a three-dimensional image of the internals of an object from a large series of two-dimensional X-ray images taken around a single axis of rotation. CT produces a volume of data which can be manipulated, through a process known as windowing, in order to demonstrate various structures based on their ability to block the X-ray beam.

A CT scanner is a special kind of X-ray machine. Instead of sending out a single X-ray through the body as with ordinary X-rays, several beams are sent simultaneously from different angles. It is used to look at internal injuries such as a torn kidney, spleen or liver; or bony injury, particularly in the spine. It can also be used to guide biopsies and therapeutic pain procedures.

Decontamination Unit includes a portable housing, which defines an interior sealable cavity accessible through a door.