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(a) Radial (top) and axial (bottom) sinogram views of the 22Na point-source (0.25 mm in diameter) measurements centered at the expected data-bin, and (b) after correction by centering each view at the maximum emission count. (c) Mean radial (top) and axial (bottom) spatial resolutions values computed over all projection angles for each 22Na point-source positioning, these values are determined from sinogram profiles and not reconstructed images.
