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. Author manuscript; available in PMC: 2016 Jul 1.
Published in final edited form as: Comput Med Imaging Graph. 2015 Mar 6;43:26–35. doi: 10.1016/j.compmedimag.2015.02.008

Table 2.

Noise reduction performance of the five reconstruction methods for the clock phantom

Metrics FBP FBP+NLM filtering PWLS-NLM PWLS-adaptiveNLM PWLS-TV
PSNR (dB) 29.32 36.15 44.25 44.87 42.69
NMSE (1e-4) 129.12 26.80 4.15 3.61 5.95