Abstract #2093

Functional MRI of large-scale brain networks involved in motor control using parallel transmission at 7 Tesla

Yidi Lu¹, Chia-Yin Wu^1,2,3, Shota Hodono^1,2, Jin Jin^2,4, David Reutens^1,2, and Martijn A Cloos^1,2

¹Centre for Advanced Imaging, The University of Queensland, Brisbane, Australia, ²ARC Training Centre for Innovation in Biomedical Imaging Technology, The University of Queensland, Brisbane, Australia, ³School of Information Technology and Electrical Engineering, The University of Queensland, Brisbane, Australia, ⁴Siemens Healthcare Pty Ltd, Brisbane, Australia

Synopsis

The standing wave artefact affects SNR and contrast of the images in Ultra-high field (UHF) functional magnetic resonance imaging (fMRI). One way to mitigate this effect is to use parallel transmission (pTx). In this study, we evaluate the benefits of pTx for studies that investigate large-scale brain networks involved in motor control. We show that, compared to the standard circularly polarized (CP) mode, activation patterns in the posterior lobule of the cerebellum, produced by a coordinated finger flexion-extension task in both hands, are better captured using subject-specific pTx pulses.

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