Noise-Immune Coil for Unshielded Magnetic Resonance Measurements
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. © 1998 Academic Press.
Journal of Magnetic Resonance
Noise-Immune Coil for Unshielded Magnetic Resonance Measurements.
Journal of Magnetic Resonance,
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