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Abstract #4128

A CAIPIRINHA-based approach to the referenceless reconstruction of high-definition SPEN images with simultaneous multislice

Gilad Liberman1, Samuel F Cousin1, Eddy Solomon1, and Lucio Frydman1

1Chemical Physics, Weizmann Institute of Science, Rehovot, Israel

Spatiotemporal Encoding (SPEN) is an ultrafast imaging technique where the low-bandwidth axis is rasterized in a joint spatial/k-domain. SPEN benefits from increased robustness to inhomogeneities, folding-free reconstruction of subsampled data, and an ability to combine multiple interleaved or signal averaging scans in a referenceless fashion. SPEN’s relatively high SAR, however, complicates its volumetric uses. Here we show how this can be solved by merging a controlled aliasing for parallel imaging (CAIPIRINHA) protocol involving phase-cycling of multi-banded excitation pulses in independent scans, so as to enable a referenceless reconstruction of interleaved multislice acquisitions delivering high in-plane definition and excellent inter-slice decoupling.

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