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FIGURE 4. Effect of reconstruction algorithm on image quality results taken on ADAC UGM C-PET scanner. Results for 1.7-cm hot sphere are shown for FBP for Hanning filters with cutoff frequencies ranging between 2 and 0.33 times Nyquist frequency as well as for ramp filter with cutoff at Nyquist frequency and 3D RAMLA for range of reconstruction parameters (number of iterations and relaxation parameter). Arrow shows results for parameters used in clinical studies. FORE = Fourier rebinning.
