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Target field design for magic angle gradient coils.

T M Barbara1, C E Bronnimann

  • 1Varian NMR Instruments, 3120 Hansen Way, Palo Alto, California 94303, USA.

Journal of Magnetic Resonance (San Diego, Calif. : 1997)
|September 10, 1999
PubMed
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This study extends gradient coil design for specialized magnetic resonance imaging (MRI) applications. The new target field method accommodates complex sample geometries, like those in magic angle spinning (MAS).

Area of Science:

  • Magnetic Resonance Imaging (MRI)
  • Coil Design Engineering

Background:

  • Traditional gradient coil design methods are limited in accommodating complex sample geometries.
  • Specialized sample configurations, such as those used in magic angle spinning (MAS), present unique design challenges for gradient coils.

Purpose of the Study:

  • To extend the target field method for designing gradient coils.
  • To enable the design of gradient coils for unusual sample geometries, including those for MAS applications.

Main Methods:

  • The target field method was adapted for gradient-producing currents on cylinders with general orientations relative to the polarizing magnetic field.
  • A generalized approach was developed to accommodate arbitrary sample geometries.

Main Results:

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  • The extended target field method successfully designs gradient coils for complex geometries.
  • A specific example of a magic angle gradient coil set for MAS applications was designed and is presented.

Conclusions:

  • The generalized target field method offers a versatile approach for designing gradient coils for advanced MRI applications.
  • This method facilitates the development of novel coil configurations for specialized techniques like MAS-MRI.