Spatial resolution of iterative cone-beam CT reconstruction

In this study, we apply the algebraic reconstruction technique (ART) to cone-beam CT volume reconstruction. We investigate the effect of various parameters on the spatial resolution of the images: volume grid size, number of iterations, and object size. Simulated data from an analytical phantom function are used to compute the resolution. The results are compared with analytical reconstruction using a cone-beam filtered backprojection algorithm (WEDGE).