GPU-Accelerated Dynamic Functional Connectivity Analysis for Functional MRI Data Using OpenCL

D. Akgün, Ü. Sakoğlu, M. Mete, J. Esquivel, B. Adinoff
Computer Engineering Department of Technology Faculty, Sakarya University, Sakarya, Turkey; Computer Science Department, Texas A&M University at Commerce, Commerce, TX, USA; VA North Texas Health Care System TX, USA; Department of Psychiatry, University of Texas Southwestern Medical Center at Dallas, TX, USA
Proc. IEEE International Conference on Electro/Information Technology, June 5-7, 2014


   title={GPU-Accelerated Dynamic Functional Connectivity Analysis for Functional MRI Data Using OpenCL},

   author={Akg{"u}n, Devrim and Sako{u{g}}lu, {"U}nal and Mete, Mutlu and Esquivel, Johnny and Adinoff, Bryon},

   journal={Proc. IEEE},



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Intense computations in engineering and science, especially bioinformatics have been made practical by the recent advances in Graphical Processing Unit (GPU) computing technology. In this study, implementation and performance evaluations for a GPU-accelerated dynamic functional connectivity (DFC) analysis, which is an analysis method for investigating dynamic interactions among different brain networks, is presented. Open Computing Library (OpenCL), which provides a general framework for GPU computing, is utilized, and it is shown to reduce the DFC analysis computation time. The parallel implementation with OpenCL provides up to 10x speed-up over sequential implementation.
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