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Abstract #4176

Multi-Slice 2D pTx Readout-Segmented Diffusion-Weighted Imaging Using Slice-by-Slice B1+ Shimming

Sydney Nicole Williams1, Iulius Dragonu2, Patrick Liebig3, and David A. Porter1
1Imaging Centre of Excellence, University of Glasgow, Glasgow, United Kingdom, 2Siemens Healthcare Ltd., Frimley, United Kingdom, 3Siemens Healthineers, Erlangen, Germany

For ultra-high field, parallel transmit (pTx) plays a key role in the mitigation of B1+ field inhomogeneity. Slice-selective 2D imaging is particularly challenging, where common solutions such as spokes haven’t been robustly implemented in standard multi-slice acquisitions. In this abstract we use slice-by-slice shimming to combat B1+ homogeneity in a multi-slice readout-segmented diffusion-weighted sequence with preliminary results shown in a human subject. Slice-by-slice shimming is compared to single-transmit and volumetric-shimming, with promising improvements in image quality.

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