B0 shimming for X-nuclei imaging at 7 T using 23Na B0 maps

Gast, LV; Henning, A; Hensel, B; Uder, M; Nagel, AM

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B0 shimming for X-nuclei imaging at 7 T using 23Na B0 maps

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Henning, A
Research Group MR Spectroscopy and Ultra-High Field Methodology, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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引用

Gast, L., Henning, A., Hensel, B., Uder, M., & Nagel, A. (2019). B0 shimming for X-nuclei imaging at 7 T using 23Na B0 maps. Poster presented at 27th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2019), Montréal, QC, Canada.

引用: https://hdl.handle.net/21.11116/0000-0003-96C8-2

要旨

B0 inhomogeneities are a major challenge at ultra-high magnetic field strengths (B0 ≥ 7 T), as they can lead to strong image artifacts. In this work, a B0 shimming routine that is based on 23Na B0 maps was implemented for applications in X-nuclei imaging where no 1H MRI data can be acquired and therefore, no vendor-provided shimming routines can be used. The proposed 23Na ConsTru shimming routine showed an improvement in B0 homogeneity comparable to the vendor-provided GRE Brain shimming routine both in phantom and in vivo measurements using 23Na B0 map acquisition times less than 1 minute.