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Table 1 SNR difference in dB between the FDK and the iterative reconstruction; RMSE between the iterative reconstruction and the reference image for different limited-data configurations

From: GPU-accelerated iterative reconstruction for limited-data tomography in CBCT systems

Angular span Projections SNR Difference (dB) RMSE
135 45 20.79 0.268
150 45 23.20 0.220
360 45 28.27 0.154
360 90 26.17 0.153
360 120 25.98 0.151