Noise-Immune Coil for Unshielded Magnetic Resonance Measurements

Document Type

Editorial

Publication Date

1-1-1998

Department

Department of Physics

Abstract

A modified split-loop resonator that is electrically balanced and that has no magnetic dipole moment is shown to be relatively immune to environmental noise. Using a magnetic resonance surface coil of this design for 14 N NQR at 3.4 MHz, it is demonstrated that magnetic resonance measurements can be made in the laboratory without additional RF shielding and with less than a 2 dB increase in the rms noise. Compared to more traditional designs, the modified split-loop resonator showed a net 17-dB gain in sensitivity for unshielded measurements.

Publication Title

Journal of Magnetic Resonance

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