ABSTRACT
This chapter introduces the development of cone beam computed tomography (CT) and the basic concept of Cone beam computed tomography (CBCT) data acquisition and image reconstruction. It focuses on CBCT broad application spectrum and technical issues related to image quality and radiation dosimetry. The chapter also focuses on the most common type of CBCT systems, and the major components always include an X-ray tube, an area X-ray detector, and a rotating gantry that can either rotate the X-ray tube and detector or the imaging object within a “rotation plane". CBCT data acquisition is the process of recording X-ray projection images as individual radiographs at different viewing angles around the object. Image reconstruction for CBCT refers to the mathematical procedures which convert the acquired two-dimensional projection data into a stack of cross-sectional images of the three-dimensional subject, with the aid of a computer.
