Computed tomography (CT) is a more advanced technique in which the patient is exposed to a fan-shaped x-ray beam guided to various detectors. The detectors move around the patient to get 360 degrees images. These images are received as data on a computer monitor. They can be reconstructed to form two-dimensional (2D) or three-dimensional ((3D) images. This is ideal for viewing all the bony structures of the skull and jaw regions.