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On the Bending and Stretching of Liquid Metal Receive Coils for Magnetic Resonance Imaging.

08:00 EDT 11th October 2018 | BioPortfolio

Summary of "On the Bending and Stretching of Liquid Metal Receive Coils for Magnetic Resonance Imaging."

The eGaIn coil on neoprene demonstrated in this paper presents a stretchable radio frequency receive coil for MRI. The coil with dimensions 86mm × 70mm is tuned to resonate at 128MHz for 3T MRI. We investigate the effect of stretching (up to 40% strain) and bending (50mm radius of curvature) of the coil on the coil's resistance and resonance frequency. Measurements and simulations show a decrease in resonance frequency of 2.5MHz per 10% strain. The higher resistivity of liquid metal compared to copper reduces the SNR of MRI scans by 2.1dB; therefore a trade-off between flexibility and performance remains. Nevertheless, we have successfully performed MRI scans with the liquid metal coil.

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This article was published in the following journal.

Name: IEEE transactions on bio-medical engineering
ISSN: 1558-2531
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