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Magnetic field mapping.

J P Hornak1, J Szumowski, R G Bryant

  • 1Department of Chemistry, Rochester Institute of Technology, New York 14623.

Magnetic Resonance in Medicine
|February 1, 1988
PubMed
Summary
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Mapping radiofrequency (RF) field homogeneity is crucial for magnetic resonance imaging and spectroscopy. This study derives relationships between RF field intensity and magnetic image intensity for various imaging methods.

Area of Science:

  • Magnetic Resonance Imaging
  • Spectroscopy
  • Radiofrequency Physics

Background:

  • Homogeneous radiofrequency (RF) magnetic fields are essential for high-quality magnetic resonance (MR) imaging and spectroscopy.
  • Mapping RF field homogeneity is often performed using aqueous phantoms to assess resonator performance.

Purpose of the Study:

  • To derive and compare relationships between RF field intensity and magnetic image intensity.
  • To present RF field maps for different image acquisition methods.

Main Methods:

  • Derivation of relationships between RF field intensity and magnetic image intensity.
  • Comparison of RF field mapping using an RF probe, spin-echo imaging, and small tip angle gradient refocused echo imaging.

Main Results:

Related Experiment Videos

  • The relationship between RF field intensity and magnetic image intensity is non-trivial and varies with imaging method.
  • RF field maps were generated for three distinct imaging techniques.

Conclusions:

  • Understanding the relationship between RF field intensity and image intensity is critical for accurate MR applications.
  • The presented methods provide valuable insights into RF field homogeneity assessment for different imaging sequences.