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Figure 9
PSNR of reconstructed images of the central slice of a foam phantom as a function of the number of voids in the sample and the number of projection angles. Solid and dashed lines represent contour lines at 30 and 20 PSNR, respectively. Given are results for FBP, SIRT, and SIRT with an additional nonnegativity constraint (SIRT>0).

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 29| Part 1| January 2022| Pages 254-265
https://doi.org/10.1107/S1600577521011322
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