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Abstract #2227

Time-Interleaved Parallel Imaging Approach to Separation of Simultaneously Excited Slices

Suchandrima Banerjee1, Yuval Zur2, Atsushi Takahashi1, Ajit Shankaranarayanan1, Douglas A.C. Kelley3

1Global Applied Science Lab, GE Healthcare, Menlo Park, CA, United States; 2GE Healthcare, Tirat Carmel, Israel; 3Global Applied Science Lab, GE Healthcare, San Francisco, CA, United States

Simultaneous multi-slice excitation can reduce the repetition time needed to acquire a fixed number of slices. Its potential has recently been demonstrated for high resolution full-brain diffusion imaging and functional MRI. In previous works that exploited coil sensitivity differences to separate slices that were simultaneously excited by multi-band excitation, calibration data was acquired from a separate scan where each slice was excited independently. In this work we propose a time-interleaved parallel imaging approach to slice separation which avoids additional prescan, provides co-localization between calibration and the actual acquisition and allows periodic re-computation of the kernel in a time-series acquisition.