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Abstract #2076

High-resolution functional imaging in the human brain using passband bSSFP at 9.4T

Klaus Scheffler 1,2 and Philipp Ehses 1,2

1 Dept. of Biomedical Magnetic Resonance, University of Tbingen, Tbingen, Germany, 2 High-Field MR Center, Max Planck Institute for Biological Cybernetics, Tbingen, Germany

Passband bSSFP at 9.4T provides highly reproducible and stable functional activation maps. Results were compared to GE-EPI and SE-EPI. Based on the very short TE of 2.1 ms for bSSFP, T2*-related signal changes are expected to be very small, which is supported by the similarity of bSSFP and SE-EPI activation maps. As bSSFP is distortion-free, direct overlay to anatomical images is possible. Furthermore, the spatial resolution is not smoothed along the PE-direction due to T2*-related blurring as in EPI-based methods.

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