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Surface normal imaging with a hand-held NMR device.

M C A Brown1, D A Verganelakis, M J D Mallett

  • 1School of Physical Sciences, University of Kent, Canterbury, CT2 7NR, UK. mcab2@kent.ac.uk

Journal of Magnetic Resonance (San Diego, Calif. : 1997)
|July 21, 2004
PubMed
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Hand-held nuclear magnetic resonance (NMR) devices now offer 3D imaging. Researchers used a magnetic field sweep coil with the NMR-Mobile Universal Surface Explorer (MOUSE) to achieve spatial resolution and non-destructive imaging.

Area of Science:

  • Nuclear Magnetic Resonance (NMR) Spectroscopy and Imaging
  • Materials Science and Engineering
  • Non-destructive Testing and Evaluation

Background:

  • Single-sided Nuclear Magnetic Resonance (NMR) devices have traditionally been limited in their imaging capabilities.
  • Advancements are expanding the potential of portable NMR for material analysis and characterization.
  • Surface-sensitive NMR techniques are crucial for non-destructive evaluation of materials.

Purpose of the Study:

  • To detail the methodology for achieving spatial resolution in a hand-held NMR device.
  • To demonstrate the capability of a magnetic field sweep coil for 3D NMR imaging.
  • To evaluate the performance of the NMR-Mobile Universal Surface Explorer (MOUSE) for non-destructive imaging.

Main Methods:

Related Experiment Videos

  • Utilized a magnetic field sweep coil integrated into the NMR-Mobile Universal Surface Explorer (MOUSE).
  • Employed varying currents in sweep coils to generate one-dimensional depth profiles.
  • Incorporated phase encoding coils to acquire two-dimensional cross-sectional images.

    • Main Results:

    • Achieved spatial resolution in the plane normal to the surface of the hand-held NMR device.
    • Demonstrated a sample penetration depth of up to 7 mm using multi-layer phantoms.
    • Successfully recorded non-destructive, two-dimensional cross-sectional images of rubber phantoms.

    Conclusions:

    • The integration of magnetic field sweep coils significantly enhances the 3D imaging capabilities of single-sided NMR devices.
    • The NMR-Mobile Universal Surface Explorer (MOUSE) is capable of non-destructive, high-resolution imaging with practical penetration depths.
    • This technology holds promise for advanced material analysis and quality control applications.