FIGURE 1. Effect of acquisition and reconstruction sampling on transverse spatial resolution. FWHM values for central point source are shown for ADAC UGM C-PET scanner as function of radial sampling in sinogram and image pixel size. Following NU 2-2001 protocol, best spatial resolution would be measured; clinical parameters typically have 2- to 4-mm sinogram radial sampling and pixel size, which result in significantly degraded resolution on this system.

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