Enhancement of solution NMR and MRI with laser-polarized xenon

G. Navon, Y. Q. Song, T. Rõõm, S. Appelt, R. E. Taylor, A. Pines

Research output: Contribution to journalArticlepeer-review

Abstract

Optical pumping with laser light can be used to polarize the nuclear spins of gaseous xenon-129. When hyperpolarized xenon-129 is dissolved in liquids, a time-dependent departure of the proton spin polarization from its thermal equilibrium is observed. The variation of the magnetization is an unexpected manifestation of the nuclear Overhauser effect, a consequence of cross-relaxation between the spins of solution protons and dissolved xenon-129. Time-resolved magnetic resonance images of both nuclei in solution show that the proton magnetization is selectively perturbed in regions containing spin-polarized xenon-129. This effect could find use in nuclear magnetic resonance spectroscopy of surfaces and proteins and in magnetic resonance imaging.

Original languageEnglish
Pages (from-to)1848-1851
Number of pages4
JournalScience
Volume271
Issue number5257
DOIs
StatePublished - 29 Mar 1996

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