Keywords: Motion Correction, Motion Correction, Brain, neuroscience, parallel transmit imaging, pTx, b1+ shimming, slice-by-slice, Siemens ICE, Terra, BrainVoyager
Motivation: 7T MRI has the capacity for higher resolution imaging, but is also more sensitive to motion artefacts and B1+ field inhomogeneity. A motion-robust, B1+ homogeneous technique will enable routine 7T usage for motion-sensitive protocols such as in fMRI.
Goal(s): Our goal was to develop integrated real-time motion correction and parallel transmission technique that improves the data quality in 7T fMRI.
Approach: The multislice-to-volume motion correction technique and the capability to execute slice-specific B1+ shims were integrated into an in-house-developed EPI sequence. A cohort was scanned in a task fMRI study.
Results: The combined technique demonstrated reduced motion, increased brain activation and improved tSNR.
Impact: With improved data quality, the integrated real-time motion correction and B1+ shimming parallel transmission technique provides an option for better statistical parametric mapping in neuroscience studies with 7T fMRI, and potentially benefiting other future 7T applications.
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