Abstract #3255

Multiband Echo-Shifted EPI (MESH) fMRI

Rasim Boyacioglu^1,2, Jenni Schulz¹, and David G. Norris^1,3

¹Radboud University, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, Netherlands, ²Radiology, Case Western Reserve Univesity, Cleveland, OH, United States, ³Erwin L. Hahn Institute, University Duisberg-Essen, Essen, Germany

Multiband Echo-Shifted EPI (MESH) is a combination of echo shifted 2D multi-slice EPI, in-plane and multiband acceleration. An additional EPI readout is inserted in the dead-time between slice selection and the multiband EPI readout. It is useful especially for low static magnetic field strengths (long optimal TE) and lower spatial resolutions (short EPI readout). It is shown that echo shifting gradients do not affect tSNR. Compared to standard and multiband EPI similar RS fMRI results are obtained at the group and individual subject level. MESH offers a further acceleration in image acquisition for fMRI at no loss in sensitivity.

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