A method for rapid evaluation of saturation factors in in vivo surface coil NMR spectroscopy using B1-insensitive pulse cycles

NMR in Biomedicine
R GruetterK Wüthrich

Abstract

For a rapid determination of saturation factors in surface coil NMR spectroscopy, the recently published (90 degrees-tau-180 degrees-tau-90 degrees-tau-) SUFIR sequence was modified with adiabatic pulse cycles. Signals were acquired after each of the two 90 degrees pulses and they were stored in different memory blocks. The deleterious offset-dependent saturation effects inherent in adiabatic 90 degrees excitation pulses were minimized by suitable combinations of adiabatic pulses that sweep from either side of the spectrum onto resonance, and by setting the carrier frequency in the middle of the spectrum. The practical use of the proposed method is illustrated with the determination of 31P NMR saturation factors in human calf muscle.

References

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Citations

Jan 1, 1993·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·R GruetterC Boesch
Jul 1, 1994·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·P A Bottomley, R Ouwerkerk
Aug 1, 1996·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·A Horská, R G Spencer
Feb 1, 1992·Proceedings of the National Academy of Sciences of the United States of America·R GruetterW V Tamborlane
Sep 10, 2002·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Nikos K Logothetis
Mar 26, 2003·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Martin MeyerspeerEwald Moser
Sep 23, 2006·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Vladimír MlynárikRolf Gruetter
Jun 16, 2009·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·W BognerS Gruber
Feb 2, 2006·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·V CettoloM P Francescato
May 1, 1992·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·R GruetterR G Shulman

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