By your own word write the definition of first and second an

Solution

Answer: The first to fourth generation computerized tomography is defined as the scanning of specific body [arts in which \"incidence of light rays is a single plane\". The first-generation CT scan is associated with “use of pencil beam” mainly via the object to a single detector; finally it is easy to translate source detector pairing. The second generation is differing from other types in which multiple detectors approximately 30 are used with a type of beam incident i.e. fan-shaped x-ray beam. The third generation CT scan more than 200 detector are used in which movement can be seen as rotate-rotate. The fourth generation CT scan is associated with higher than 2000 detectors use in which outer ring is fixed with movement of rotate-fixed