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Algorithm Architecture Adequacy for High Speed 3D Tomography


Backprojection is a computational costly step in tomography image reconstruction such as Positron Emission Tomography (PET). In this purpose, this paper presents a Pipelined, Prefetch and Parallelized Architecture for PET backprojection (3PA-PET). The main strength of this architecture comes from its original memory access strategy, masking the high memory latency of the external memory. The 3PAPET architecture is implemented on a System on Programmable Chip (SopC). Time performances are compared with a desktop PC, a workstation and a GPU. We prove that the exploitation of the intrinsic temporal and spatial locality by the 3D Predictive and Adaptative (3D-AP) memory cache succeeds to run efficiently several pipelines of backprojection : each reaches a computational throughput close to 1 operation per cycle.
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hal-00175732 , version 1 (01-10-2007)


  • HAL Id : hal-00175732 , version 1


Nicolas Gac, Stéphane Mancini, Michel Desvignes, Dominique Houzet. Algorithm Architecture Adequacy for High Speed 3D Tomography. DASIP 2007 - Workshop on Design and Architectures for Signal and Image Processing, Nov 2007, Grenoble, France. ⟨hal-00175732⟩
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