Application d’un cache 2D prédictif à l’accélération de la rétroprojection TEP 2D
2D PET backprojection acceleration through a 2D predictive cache
OPEN ACCESS
Reduction of image reconstruction time is a key point for the development and spreading of PET scans. Thus this article presentes a hardware/software architecture which aims at accelerating the 2D reconstruction on a SoPC (System on Programmable Chip) plateform, the new generation of reconfigurable chip. Issue posed by the latency of memory accesses has been solved thanks to the 2D Aptative and Predictive cache (2D-AP cache).
Résumé
Le développement et la diffusion des équipements TEP passent par la réduction des temps de calcul de la reconstruction des images acquises. Aussi cet article présente une solution mixte logicielle/matérielle pour l'accélération de la reconstruction 2D sur une plateforme SOPC (System on Programmable Chip), la nouvelle génération de circuits reconfigurables. Le verrou technologique posé par la latence des accès mémoire est levé grâce au cache 2D Adaptatif et Prédictif (cache 2D-AP).
PET imaging, Reconstruction, Backprojection, Algorithm Architecture Adequacy, Hardware/software partitionning, System on Programmable Chip, Cache, FPGA
Mots clés
Imagerie TEP, Reconstruction, Rétro-projection, Adéquation Algorithme Architecture, Partitionnement matériel/logiciel, System on Programmable Chip, Cache, FPGA
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