PARALLEL IMAGE-RECONSTRUCTION ON MIMD COMPUTERS FOR 3-DIMENSIONAL CONE-BEAM TOMOGRAPHY

This paper deals with the parallel implementation of reconstruction me thods in three-dimensional (3D) cone-beam tomography, Indeed, 3D recon struction of realistic size volumes requires huge computer resources d ue to the voluminous data to handle, and the long processing times. Pa rallel computing, on MIMD computers, seems to be a good approach to ma nage this problem. In this study, we present different solutions for t he parallelization of three conventional reconstruction methods, usabl e on a class of parallel computers. Depending on the method, we consid er two approaches referred as a local and a global approach. Performan ce results obtained on five different MIMD computers are reported. Two 3D images reconstructed from physical data acquired with the ''Morpho meter'' are presented. (C) 1998 Published by Elsevier Science B.V. All rights reserved.