On the Bending and Stretching of Liquid Metal Receive Coils for Magnetic Resonance Imaging.
biomechanical · Level V
Where this comes from
- Record sourced from PubMed, PMID 30307855.
- Also identified by DOI 10.1109/TBME.2018.2875436.
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Abstract
The eGaIn coil on neoprene demonstrated in this paper presents a stretchable radio frequency receive coil for magnetic resonance imaging (MRI). The coil with dimensions [Formula: see text] is tuned to resonate at 128 MHz for 3 T MRI. We investigate the effect of stretching (up to 40% strain) and bending (50 mm radius of curvature) of the coil on the coil's resistance and resonance frequency. Measurements and simulations show a decrease in resonance frequency of 2.5 MHz per 10% strain. The higher resistivity of liquid metal compared to copper reduces the SNR of MRI scans by 34%; therefore, a tradeoff between flexibility and performance remains. Nevertheless, we have successfully performed MRI scans with the liquid metal coil.
Medical subject headings
- Magnetic Resonance Imaging
- Metals, Heavy