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. 2021 Jul 17;8:52. doi: 10.1186/s40658-021-00400-8

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© The Author(s) 2021

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Fig. 8 — Background variability (top row) and image roughness (bottom row) for Gallium-68 acquisitions of the NEMA IQ phantom. The left column displays the metrics for varying β values of the BPL reconstruction including OSEM+TOF_6.4 and PSF_6.4, the middle column the OSEM and OSEM+TOF reconstructions for six different sites and the right figure for the advanced reconstructions methods