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Abstract #2873

Respiration robust universal pulses in the human heart at 7T for shallow and deep breathing

Christoph Stefan Aigner1, Sebastian Dietrich1, Felix Krüger1, Max Lutz1, and Sebastian Schmitter1,2,3
1Physikalisch-Technische Bundesanstalt (PTB), Braunschweig and Berlin, Germany, 2German Cancer Research Center (DKFZ), Medical Physics in Radiology, Heidelberg, Germany, 3University of Minnesota, Center for Magnetic Resonance Research, Minneapolis, MN, United States


This study demonstrates the design and application of a new class of universal pulses (UP) designed for a library of 22 non-respiration resolved (NRR) B1+-maps acquired in-vivo during shallow breathing (SB) and 30 respiration resolved (RR) B1+-maps acquired during deep breathing (DB). The proposed UP was tested on 9 NRR SB (test-cases-SB) and 15 RR DB B1+-maps (test-cases-DB) and was applied experimentally in five volunteers (test-cases-DB) along with tailored pulses in multiple gradient echo measurements. Compared to tailored pulses, UP resulted in a slightly overall decrease of the FA homogeneity but similar image quality across all test-cases.

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