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Cited by 373

The DOI matches its Crossref record; 17 of the 17 references it cites were found in a registry or an index.

Bulk magnetic susceptibility shifts in nmr studies of compartmentalized samples: use of paramagnetic reagents

Chu, Ksimon ‐.C., Xu, Yan, Balschi, James A., Springer, Charles S.·1990·Magnetic Resonance in Medicine

Abstract

The bulk magnetic susceptibility (BMS) shift of a nuclear resonance frequency caused by a paramagnetic compound is of importance in in vivo NMR, both magnetic resonance spectroscopy and magnetic resonance imaging. However, since it is a rather complicated phenomenon, it has been the source of many misinterpretations in the literature. We have reworked and organized the theory of the BMS shift. This includes accounting for the important effects of local susceptibility. We have conducted experiments on phantom samples in order to illustrate the principles involved. Our phantoms consist of capillaries and coaxial cylinders. They simulate the situations of blood vessels oriented parallel and perpendicular to the magnetic field and the interstitial spaces surrounding them. In most of our experiments, the paramagnetic compound was one of several different hyperfine shift reagents for cation resonances. These were chosen to cover a range of potencies, in both magnitude and sign, of the shifts they produce. However, we also used a reagent which was incapable of inducing a hyperfine shift and thus could cause only a BMS shift. Although we report only 23 Na spectra in this paper, the latter samples simulate the cases where one observes the water 1 H resonance in experiments employing hyperfine shift reagents for cations. There have been a number of such investigations recently reported in the literature. The principles considered in this paper allow us to offer new interpretations for the results of several experiments published in the last few years.

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Metadata

Authors
Chu, K. ‐. C., Xu, Y., Balschi, J. A., & Springer, C. S.
Venue
Magnetic Resonance in Medicine
Publisher
Wiley
Published
1990-02
Volume
13
Issue
2
Pages
239-262
ISSN
  • 0740-3194 (ISSN-L)
  • 1522-2594
OpenAlex
W2124120793
Cited by
373
References
17
FWCI
19.27
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Bulk magnetic susceptibility shifts in nmr studies of compartmentalized samples: use of paramagnetic reagents. https://app.cochat.ai/papers/10.1002/mrm.1910130207
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Chu, K. ‐. C., Xu, Y., Balschi, J. A., & Springer, C. S. (1990). Bulk magnetic susceptibility shifts in nmr studies of compartmentalized samples: use of paramagnetic reagents. Magnetic Resonance in Medicine. https://doi.org/10.1002/mrm.1910130207

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