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Abstract #1133

The travelling pulses: multicenter evaluation of universal pulses at 7T

Xiaoping Wu1, Vincent Gras2, Alexandre Vignaud2, Franck Mauconduit3, Markus Boland4, Tony Stoecker4, Kamil Ugurbil1, and Nicolas Boulant2

1Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, United States, 2NeuroSpin, CEA, Saclay, France, 3Siemens Healthcare, Saint-Denis, France, 4German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany

It has been shown recently that parallel transmission universal pulses (UPs), optimized offline on a training field-maps database, can be used to robustly mitigate B1+ inhomogeneity on other subjects, thus holding great potential for spreading their utility by sparing the user the time-consuming individualized calibration. For these UPs to be used widely, however their performance needs to be immune to inter-site differences. In this study, we examined the robustness of the UPs against inter-site variability. Our results so far obtained at two sites show that the UPs are quite robust in producing uniform contrast across the brain despite these differences.

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