Abstract #3920
PEAK-EPI: Feasibility and benefits of k-t-undersampled EPI acquisition and PEAK-GRAPPA reconstruction in fMRI
Rebecca Ramb 1 , Pierre Levan 1 , and Jrgen Hennig 1
1
Department of Radiology, Medical Physics,
University Medical Center, Freiburg, Germany
PEAK-EPI, i.e. permuted interleaved EPI acquisition
together with PEAK-GRAPPA reconstruction, facilitates
high spatial resolution (2mm at 3T) with whole brain
coverage (60-63 slices) in task-related fMRI while
maintaining high SNR and tSNR. Due to the shortening of
the acquisition times per slice, distortion effects are
mitigated. The feasibility PEAK-GRAPPA in task-related
fMRI is presented with two different acquisition and
reconstruction schemes and magnitude images as well as
activation maps are compared to a reference EPI
acquisition.
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