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Abstract #0454

MetaPulse2D: methodology to enable universal slice specific spokes pulses in parallel transmission

Franck Mauconduit1, Vincent Gras1, Alexandre Vignaud1, and Nicolas Boulant1
1Paris-Saclay University, CEA, CNRS, BAOBAB, NeuroSpin, Gif-sur-yvette, France


When using a slice-by-slice RF shimming or multi-spokes pulses in 2D parallel transmission MRI, the solution is valid for a specific slice position and orientation. Here, we introduce a new pulse concept were the spoke coefficients and gradient blips are smooth functions of the slice position and orientation. We show that this design performs better than CP mode and equivalent to other designs. However, it enables to tilt or reposition slices without requiring additional optimization. This solution promotes signal smoothness through slices. Additionally, it can be pre-computed using the Universal Pulse concept or computed online using a tailored approach.

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