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Abstract #5227

High-Resolution fMRI of the visual system at 3T using Zoomed Excitation via Tx-SENSE

R. Allen Waggoner1, Kenichi Ueno2, Josef Pfeuffer3, Keiji Tanaka1, and Kang Cheng1,2

1Laboratory for Cognitive Brain Mapping, RIKEN - BSI, Wako-shi, Japan, 2Support Unit for Functional Magnetic Resonance Imaging, RIKEN - BSI, Wako-shi, Japan, 3Application Development, Siemens Healthcare, Erlangen, Germany

Zoomed EPI with a transmit SENSE excitation was used to perform high-resolution fMRI of the human visual cortex at 3T. Tx acceleration was used to reduce the minimum TE by 6ms. BOLD responses were detected in the visual cortex with sub-millimeter in-plane resolution. A monocular stimulation paradigm was employed, and voxels displaying a left or right eye preference were detected, but ocular dominance columns were not apparent. These results show that using transmit SENSE at 3T with a 2-channel pTx system for high-resolution fMRI is possible, but would benefit from further steps to improve tSNR.

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