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Abstract #2989

Application of k-t FASTER for rank-constrained acceleration of in vivo FMRI data

Mark Chiew 1 , Stephen M Smith 1 , Nadine N Graedel 1 , Thomas Blumensath 2 , and Karla L Miller 1

1 FMRIB Centre, University of Oxford, Oxford, Oxfordshire, United Kingdom, 2 IVSR, University of Southampton, Southampton, Hampshire, United Kingdom

In this abstract, we demonstrate the k-t FASTER method for rank-constrained acceleration of FMRI data acquisition on prospectively under-sampled in vivo data. A 3D EPI acquisition scheme with 4.27x acceleration via pseudo-random under-sampling of the kz dimension was used to achieve whole brain sampling at 2mm isotropic resolution with TR = 975 ms without the use of coil sensitivity information. Results show high fidelity reconstructions of resting state networks in comparison to an un-accelerated 3D EPI acquisition of equal duration.

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