Title :
A method for OSEM PET reconstruction on parallel architectures using STIR
Author :
Beisel, Tobias ; Lietsch, Stefan ; Thielemans, Kris
Author_Institution :
Paderborn Center for Parallel Computing, University of Paderborn, Germany
Abstract :
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.
Keywords :
Clustering algorithms; Computer architecture; Image reconstruction; Message passing; Multicore processing; Open source software; Parallel architectures; Positron emission tomography; Runtime; System testing;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2008. NSS '08. IEEE
Conference_Location :
Dresden, Germany
Print_ISBN :
978-1-4244-2714-7
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2008.4774198
