Efficiently GPU-Accelerating Long Kernel Convolutions in 3-D DIRECT TOF PET Reconstruction via Memory Cache Optimization D


The DIRECT represents a novel approach for 3-D Time-of-Flight (TOF) PET reconstruction. Its novelty stems from the fact that it performs all iterative predictor-corrector operations directly in image space. The projection operations now amount to convolutions in image space, using long TOF (resolution) kernels. While for spatially invariant kernels the… (More)

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