High-resolution magnetic resonance spectroscopy in unstable fields via intermolecular zero-quantum coherences
Physical Chemistry Chemical Physics, ISSN: 1463-9076, Vol: 12, Issue: 23, Page: 6014-6020
2010
- 6Citations
- 8Captures
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Article Description
Intermolecular zero-quantum coherences (iZQCs) have been utilized to achieve high-resolution nuclear magnetic resonance (NMR) proton spectra under inhomogeneous and/or unstable fields. In this paper, we demonstrated that despite the insensitivity of iZQCs to B variations, the influence of unstable fields on the observable single-quantum coherence signals causes strong t noises in the high-resolution iZQC spectra. Short-time acquisition (STA) and phase spectrum schemes were proposed for noise suppression in in vivo iZQC magnetic resonance spectroscopy (MRS) under temporal B variations. The feasibility of these schemes were verified by localized spectroscopic studies under B variations generated by the Z0 coil current oscillations and by voxel position variations in the presence of field gradients, which simulate the field conditions of MRS in the presence of physiological motions. The phase scheme not only improves the signal-to-noise ratio but also further reduces the linewidth by half. © the Owner Societies.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=77955929157&origin=inward; http://dx.doi.org/10.1039/b920180g; http://www.ncbi.nlm.nih.gov/pubmed/20428575; https://xlink.rsc.org/?DOI=b920180g; https://dx.doi.org/10.1039/b920180g; https://pubs.rsc.org/en/content/articlelanding/2010/cp/b920180g
Royal Society of Chemistry (RSC)
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