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  • Title: Active shielding of cylindrical saddle-shaped coils: application to wire-wound RF coils for very low field NMR and MRI.
    Author: Bidinosti CP, Kravchuk IS, Hayden ME.
    Journal: J Magn Reson; 2005 Nov; 177(1):31-43. PubMed ID: 16099186.
    Abstract:
    We provide an exact expression for the magnetic field produced by cylindrical saddle-shaped coils and their ideal shield currents in the low-frequency limit. The stream function associated with the shield surface current is also determined. The results of the analysis are useful for the design of actively shielded radio-frequency (RF) coils. Examples pertinent to very low field nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) are presented and discussed.
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