Time-of-flight flow imaging using NMR remote detection

J. Granwehr*, E. Harel, S. Han, S. Garcia, A. Pines, P. N. Sen, Y. Q. Song

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

65 Scopus citations


A time-of-flight imaging technique is introduced to visualize fluid flow and dispersion through porous media using NMR. As the fluid flows through a sample, the nuclear spin magnetization is modulated by rf pulses and magnetic field gradients to encode the spatial coordinates of the fluid. When the fluid leaves the sample, its magnetization is recorded by a second rf coil. This scheme not only facilitates a time-dependent imaging of fluid flow, it also allows a separate optimization of encoding and detection subsystems to enhance overall sensitivity. The technique is demonstrated by imaging gas flow through a porous rock.

Original languageEnglish (US)
Article number075503
JournalPhysical review letters
Issue number7
StatePublished - Aug 12 2005

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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