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. Author manuscript; available in PMC: 2015 Sep 1.
Published in final edited form as: Comput Med Imaging Graph. 2014 May 14;38(6):423–435. doi: 10.1016/j.compmedimag.2014.05.002

Figure 2.

Figure 2

One transverse slice of the NCAT phantom: (a) phantom; (b) reconstruction result with FBP from simulated noisy sinogram; (c) reconstruction result with SIR-GMRF from simulated noisy sinogram (β=6×105); (d) reconstruction result with SIR-GGMRF from simulated noisy sinogram (β=2.5×104); (e) reconstruction result with the proposed SIR-NLM from simulated noisy sinogram (β=1.4×106, SW=17×17, PW=5×5, h=0.007). All the images are displayed with the same window.