Abstract #4592

PASTeUR package extension to slab-selective excitations and 3D-EPI for plug-and-play parallel transmit at 7 Tesla

Redouane Jamil¹, Aurélien Massire², Franck Mauconduit¹, Vincent Gras¹, Mathieu Naudin^3,4,5, Rémy Guillevin^3,4,5, Eberhard Pracht⁶, Tony Stöcker^6,7, Nicolas Boulant¹, and Rüdiger Stirnberg⁶

¹Paris-Saclay University, CEA, CNRS, BAOBAB, NeuroSpin, Gif-sur-Yvette, France, ²Siemens Healthcare SAS, Saint-Denis, France, ³CHU Poitiers, Poitiers, France, ⁴LRCOM I3M, DACTIM LMA CNRS 7348, University of Poitiers, Poitiers, France, ⁵Laboratory of Applied Mathematics, UMR CNRS 7348, University of Poitiers, Poitiers, France, ⁶German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany, ⁷Department of Physics and Astronomy, University of Bonn, Bonn, Germany

Synopsis

Keywords: Parallel Transmit & Multiband, Parallel Transmit & Multiband, High-Field MRI; fMRI

Keywords: Parallel Transmit & Multiband; High-Field MRI; RF Pulse Design & Fields; fMRI

PASTeUR is a package of sequences using non-selective parallel transmission Universal Pulses (UP) as a plug-and-play pTX solution alleviating B₁⁺ inhomogeneities. Here, we extend the UP solution to slab-selective excitations while preserving a plug-and-play philosophy. A slab of any thickness/orientation/rotation can be acquired without subject-specific calibrations. In vivo experiments performed with an fMRI protocol on a 3D-EPI show that the improved B₁⁺ homogeneity can result in higher SNR. Moreover, the slab-selective UP coupled with parallel imaging and segmented k-space acquisitions pushed further the quality of 3D-EPI.

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