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

D W Shattuck, J Rapela, E Asma, A Chatzioannou, J Qi, R M Leahy
2002 Physics in Medicine and Biology  
We describe an approach to fast iterative reconstruction from fully threedimensional (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
more » ... 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.
doi:10.1088/0031-9155/47/15/317 pmid:12200939 fatcat:fvfs7gx2mvft3le4onadzzyj4a