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 Schmitter^1,2,3

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

Synopsis

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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