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

Figure 3

Reconstruction results of Shepp-Logan phantom (radius of ROI: 60 pixels). From left to right: reference from nontruncated data, proposed correction method, water cylinder extrapolation (cf. Hsieh et al. [2]), and no correction. The grayscale window is .