Millimeter Spatial Resolution and Subsecond Temporal Resolution in Real-Time fMRI using Multi-Band Echo-Volumar Imaging
Stefan Posse1, Sudhir Ramanna2, Steen Moeller2, Bruno Sa De La Rocque Guimaraes1, Michael Mullen2, and Essa Yacoub2
1Neurology, U New Mexico, Albuquerque, NM, United States, 2Center for Magnetic Resonance Research, Minneapolis, MN, United States
In this study we develop highly undersampled multi-band slab-segmented echo-volumar imaging (MB_EVI), which combines the sampling efficiency of single-shot 3D encoding with the sensitivity advantage of multi-echo acquisition, and explore the feasibility of shortening the readout duration using segmented within-slab slice encoding. Kz-segmented Segmented MB-EVI enabled a nominal 1x1x1 mm isotropic voxel size with 64 slices and a temporal resolution of 618 ms with sub-second acquisition time.
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