Accurate image reconstruction in circular cone-beam computed tomography by total variation minimization: a preliminary investigation

The total variation (TV) minimization image reconstruction algorithm for inverting the divergent-beam X-ray transform is applied to image reconstruction in circular cone-beam computed tomography (CT). Reconstructions for the disk phantom are shown and compared with that of projection onto convex sets (POCS). The preliminary results appear to show that TV-minimization yields accurate image reconstructions that are robust against data inconsistencies due to noise or mismatch in the system matrix.