Water suppression with B0 field gradient homospoil pulses in high-resolution NMR spectroscopy

Magn Reson Med. 1989 Jan;9(1):118-25. doi: 10.1002/mrm.1910090114.

Abstract

The combination of a frequency nonselective excitation suppression method (1331 sequence) with selective excitation followed by gradient-induced dephasing of water transverse magnetization yielded suppression ratios of greater than 10,000:1. The need for gradient preemphasis and correction of B0 field shifts is discussed. The suppression efficiency of this method compared favorably to results obtained using the CPMG spin-echo technique to observe metabolite resonances in a urine sample.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Equipment Design
  • Humans
  • Magnetic Resonance Spectroscopy / instrumentation
  • Magnetic Resonance Spectroscopy / methods*
  • Urine / analysis
  • Water*

Substances

  • Water