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Abstract #2045

Multiband Multiecho 2D-EPI: Maximizing BOLD CNR for fMRI at 3T

E. Daniel P. Gomez 1 , Jenni Schulz 1 , Rasim Boyacioglu 1 , David G. Norris 1,2 , and Benedikt A. Poser 3

1 Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, Nijmegen, Gelderland, Netherlands, 2 Erwin L. Hahn Institute for Magnetic Resonance Imaging, University Duisburg-Essen, Essen, Germany, 3 Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, Netherlands

Multiband Multiecho 2D-EPI with blipped-CAIPI is an MR imaging sequence that allows the acquisition of multiple slices simultaneously, thus dramatically reducing acquisition time and repetition time, and of multiple echoes with different TEs after a single RF excitation, improving BOLD sensitivity in fMRI studies. In this study we compared various MB-ME 2D EPI protocols - different in the number of slices excited simultaneously, in-plane acceleration factors and CAIPI factors - to maximize the BOLD CNR for fMRI studies.

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