Internet2-based 3D PET image recontruction using a PC cluster

D. W. Shattuck, J. Rapela, E. Asma, A. Chatzioannou, J. Qi, R. M. Leahy

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


We describe an approach to fast iterative reconstruction from fully three-dimensional (3D) PET data using a network of PentiumIII PCs configured as a Beowulf cluster. To facilitate the use of this system, we have developed a browser-based interface using Java. The system compresses PET data on the user's machine, sends these data over a network, and instructs the PC cluster to reconstruct the image. The cluster implements a parallelized version of our preconditioned conjugate gradient method for fully 3D MAP image reconstruction. We report on the speed-up factors using the Beowulf approach and the impacts of communication latencies in the local cluster network and the network connection between the user's machine and our PC cluster.

Original languageEnglish (US)
Pages (from-to)2785-2795
Number of pages11
JournalPhysics in Medicine and Biology
Issue number15
StatePublished - Aug 7 2002
Externally publishedYes

ASJC Scopus subject areas

  • Biomedical Engineering
  • Physics and Astronomy (miscellaneous)
  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology


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