Nodal inhomogeneity mapping by localized excitation—the “NIMBLE” shimming technique for high‐resolution  in Vivo  NMR spectroscopy | Zendy

Doddrell David M. | Zendy; Galloway Graham J. | Zendy; Brewton Ian M. | Zendy; Brooks William M. | Zendy

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Nodal inhomogeneity mapping by localized excitation—the “NIMBLE” shimming technique for high‐resolution in Vivo NMR spectroscopy

Author(s) -

Doddrell David M.,

Galloway Graham J.,

Brewton Ian M.,

Brooks William M.

Publication year - 1988

Publication title -

magnetic resonance in medicine

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.696

H-Index - 225

eISSN - 1522-2594

pISSN - 0740-3194

DOI - 10.1002/mrm.1910070313

Subject(s) - shim (computing) , voxel , nuclear magnetic resonance , excitation , spectroscopy , high resolution , isocenter , homogeneity (statistics) , materials science , resolution (logic) , computer science , optics , physics , artificial intelligence , geology , remote sensing , medicine , quantum mechanics , machine learning , erectile dysfunction , imaging phantom

A method (NIMBLE) for obtaining optimum B o field homogeneity at voxels located away from the magnet isocenter for use in volume‐selected NMR spectroscopy is described. Voxels may be shimmed using only first‐order X, Y , and Z shims to produce three‐dimensional shim current maps, thus avoiding shim coupling problems. NIMBLE shimming prior to volume selection ensures optimum spectral resolution and improves the efficiency and accuracy of the volume‐selection experiment. The benefits of the technique are illustrated by a high‐resolution volume‐selected spectrum of human tibia marrow. © 1988 Academic Press, Inc.

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