Keywords: Peripheral Nerves, Acquisition Methods
Motivation: fMRI is usually applied with either parallel imaging (PAT2) or partial Fourier (pFOU), but there is no systematic comparison between both techniques.
Goal(s): Mapping of the somatotopic representation of each finger as a demanding task was selected to address the advantages and disadvantages of both techniques and to further optimize it for clinical application.
Approach: PAT2 and pFOU were compared for fMRI of the sensorimortor cortex in 5 healthy volunteers with independent tactile stimulation of each fingertip.
Results: Both techniques revealed comparable results for somatopy, but PAT2 allowed a larger number of slices; 200 instead of 300 measurement seem to be sufficient.
Impact: fMRI with parallel imaging instead of partial Fourier, a voxel size of (1.5mm)3 and 200 measurements seems to be a reliable technique at 3T for mapping finger representations in somatosensory cortex, which is also well suited for application in patients.
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