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. Author manuscript; available in PMC: 2013 Jul 1.
Published in final edited form as: IEEE Trans Med Imaging. 2012 Apr 3;31(7):1413–1425. doi: 10.1109/TMI.2012.2192133

Fig. 5.

Fig. 5

Profiles around the ring on the right of the reconstructed images of PMC, PMM, and MTR (with different ζ values) with different spatial regularizers from the noiseless projection data. Nonuniform and/or anisotropic LIRs lead to non-uniform estimation bias in small or narrow structures such as small lesions or rings. Reconstructed images are shown in supplimentary figures.