High Performance 3D PET Reconstruction Using Spherical Basis Functions on a Polar Grid.

In all cases the CV follows an increasing trend due to the known noise increase as more ML-EM iterations are calculated.

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To confirm that the trend was not exacerbated as more iterations are computed, the CC between the MPI-based implementation and the GPU-based implementation was computed over 600 iterations, showing a CC of 94% at 600 iterations and a slight trend correction. 4.2.2.

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