Magnetic resonance signal moment determination using the Earth's magnetic field

Einar Orn Fridjonsson, Sarah A. Creber, Johannes S. Vrouwenvelder, Michael L. Johns

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

We demonstrate a method to manipulate magnetic resonance data such that the moments of the signal spatial distribution are readily accessible. Usually, magnetic resonance imaging relies on data acquired in so-called k-space which is subsequently Fourier transformed to render an image. Here, via analysis of the complex signal in the vicinity of the centre of k-space we are able to access the first three moments of the signal spatial distribution, ultimately in multiple directions. This is demonstrated for biofouling of a reverse osmosis (RO) membrane module, rendering unique information and an early warning of the onset of fouling. The analysis is particularly applicable for the use of mobile magnetic resonance spectrometers; here we demonstrate it using an Earth's magnetic field system.
Original languageEnglish (US)
Pages (from-to)145-150
Number of pages6
JournalJournal of Magnetic Resonance
Volume252
DOIs
StatePublished - Mar 2015

ASJC Scopus subject areas

  • Biochemistry
  • Biophysics
  • Condensed Matter Physics
  • Nuclear and High Energy Physics

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