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Output total activity in the lesion versus input total activity, for low spatial resolution OSEM (blue) and high resolution PSF+TOF reconstruction (red), are plotted for all lesions: 4 mm lesions (asterisk), 6 mm lesions (triangle) and 10 mm lesions (square). Linear fit through the data is shown. The full range is covered on the left plot, and a zoom in the small activity range is shown on the right plot.
