High-resolution fMRI using Accelerated EPIK for Enhanced Characterisation of Functional Areas at 3T
Seong Dae Yun 1 and N. Jon Shah 1,2
Institute of Neuroscience and Medicine,
Medical Imaging Physics (INM-4), Forschungszentrum
Juelich, Juelich, Germany,
of Medicine, Department of Neurology, JARA, RWTH Aachen
University, Aachen, Germany
EPIK had been previously validated both at 1.5T and 3T.
The method was shown to provide a higher temporal
resolution and less image distortions than single-shot
EPI whilst maintaining comparable performance for the
detection of BOLD-based signals. This work aims to
perform high-resolution visual fMRI based on EPIK and
evaluate its performance in direct comparison to
comparable EPI; each method was accelerated with
parallel imaging and partial Fourier techniques for
resolution improvement. The obtained results showed that
EPIK outperformed single-shot EPI in terms of imaging
resolution and capability of identifying relatively
small functional regions such as LGN and SC.
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