Performance of a CT imaging system

Optimizing Spatial Resolution with the Mechanical Design of an X-Ray Computed Tomography Scanner

“…Since the sample spacing should be set fine enough to avoid aliasing, all available fine detail will be reproduced and the spatial resolution will be limited by other factors [5][6][7]. The most elemental of these are two factors related to properties of the x-ray beam itself: the profile of the beam between the x-ray focal spot and the detector, and the position of the object being scanned in relation to the focal spot and detector.…”