An Improved Extrapolation Scheme for Truncated CT Data Using 2D Fourier-Based Helgason-Ludwig Consistency Conditions

Figure 4

Reconstruction results of Shepp-Logan phantom (radius of ROI: 30 pixels). From left to right: reference from nontruncated data, proposed correction method, water cylinder extrapolation (cf. Berger et al. [8]), and no correction. The grayscale window is .