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A method for OSEM PET reconstruction on parallel architectures using STIR

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3 Author(s)
Beisel, T. ; Paderborn Center for Parallel Computing, University of Paderborn, Germany ; Lietsch, Stefan ; Thielemans, K.

To accelerate image reconstruction of positron emission tomography (PET) data, we introduced an approach for parallel architectures by applying the message passing paradigm to an existing implementation of the ordered-subsets expectation-maximization (OSEM) algorithm for two- or three-dimensional (2D/3D) PET. To reduce the amount of time needed to complete a reconstruction, a cluster was used as well as different multi-core systems. A main focus was on the multi-core processors, as these systems are increasingly common and easy to use in medical environments.

Published in:

Nuclear Science Symposium Conference Record, 2008. NSS '08. IEEE

Date of Conference:

19-25 Oct. 2008