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Abstract #2988

Multiband Echo-Shifted (MESH) EPI for improved acquisition efficiency of T2* weighted EPI

David G Norris 1,2 , Jenni Schulz 1 , and Rasim Boyacioglu 1

1 Donders Institute for Brain, Cognition, and Behaviour, Radboud University, Nijmegen, Netherlands, 2 Erwin L Hahn Institute, University Duisberg-Essen, Essen, Germany

We demonstrate the application of echo shifted EPI, combined with in plane acceleration using GRAPPA, and multiband imaging. GRAPPA reduces the echo train length, so that the effective TE is close to the optimum for performing fMRI at 3T. Using an isotropic spatial resolution of 3.5mm, GRAPPA factor 3, and MB3 whole brain coverage at 3T was possible with TE 30ms, and TR 224ms. Image quality was comparable to that obtained using multiband but no echo shifting. This approach will greatly improve the efficiency of fMRI, particularly at lower field strengths and course to intermediate spatial resolutions.

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