Fig. 1.
The influence of the number of projections and the angular distribution in image quality when filtered backprojection in fan beam reconstruction is used: (a) uniform angles 400 projections, (b) uniform angles 100 projections, (c) uniform angles 50 projections, (d) random angles 400 projections, (e) random angles 100 projections, and (f) random angles 50 projections.