B0 shimming for in vivo magnetic resonance spectroscopy: Experts' consensus recommendations,NMR in Biomedicine

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B0 shimming for in vivo magnetic resonance spectroscopy: Experts' consensus recommendations
NMR in Biomedicine ( IF 2.7 ) Pub Date : 2020-06-28 , DOI: 10.1002/nbm.4350
Christoph Juchem ₁ , Cristina Cudalbu ₂ , Robin A de Graaf ₃ , Rolf Gruetter ₄ , Anke Henning _{5,

6} , Hoby P Hetherington ₇ , Vincent O Boer ₈

Affiliation

Magnetic resonance spectroscopy (MRS) and spectroscopic imaging (MRSI) allow the chemical analysis of physiological processes in vivo and provide powerful tools in the life sciences and for clinical diagnostics. Excellent homogeneity of the static B₀ magnetic field over the object of interest is essential for achieving high‐quality spectral results and quantitative metabolic measurements. The experimental minimization of B₀ variation is performed in a process called B₀ shimming. In this article, we summarize the concepts of B₀ field shimming using spherical harmonic shimming techniques, specific strategies for B₀ homogenization and crucial factors to consider for implementation and use in both brain and body. In addition, experts' recommendations are provided for minimum requirements for B₀ shim hardware and evaluation criteria for the primary outcome of adequate B₀ shimming for MRS and MRSI, such as the water spectroscopic linewidth.

中文翻译：

用于体内磁共振波谱的 B0 匀场：专家共识建议

磁共振波谱 (MRS) 和光谱成像 (MRSI) 允许对体内生理过程进行化学分析，并为生命科学和临床诊断提供强大的工具。_{感兴趣对象上的静态 B 0}磁场的出色均匀性对于获得高质量的光谱结果和定量代谢测量至关重要。_{B 0}变化的实验最小化在称为B ₀匀场的过程中进行。在本文中，我们总结了使用球谐匀场技术的 B _{0场匀场的概念，B}_{0的具体策略}在大脑和身体中实施和使用时要考虑的同质化和关键因素。此外，还提供了专家对 B ₀垫片硬件的最低要求和MRS 和 MRSI充分 B ₀垫片的主要结果的评估标准的建议，例如水光谱线宽。

更新日期：2020-06-28

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