Abstract #1793

Partial Fourier fMRI acquisition pipeline for optimal half k-space coverage

Christine Law¹, Gary Glover¹, and Sean Mackey¹

¹Stanford University, Stanford, CA, United States

We present a novel idea for quickly detecting the optimal half k-space for use in partial Fourier acquisition. With EPI acquisition, the center of k-space can be offset from the origin by local magnetic field inhomogeneity. This offset can occur in both positive and negative phase encode directions. For partial Fourier acquisition, it is important to sample the portion of k-space containing the center peak. Before data collection using partial Fourier acquisition, a reference scan that collects two time frames (each with different halves of k-space coverage) can be used to determine the proper half of k-space to collect for each slice.

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