Knee MRI under varying flexion angles utilizing a flexible flat cable antenna

NMR in Biomedicine
Fan JiaJing Fang

Abstract

The aim of this study is to fabricate and test a novel flexible flat cable antenna (FFCA) for MRI of the knee at different flexion angles. The FFCA was made of a flat cable, a tuning/matching circuit and a signal transmission line. To test its feasibility and validity, in vitro and in vivo experiments were carried out on a 3.0 T MR scanner. The in vitro experiment suggested that the proposed FFCA could achieve a high signal-to-noise ratio (SNR) of 336, while the SNR of an eight-channel knee coil was 291, and phantom images from the FFCA are homogeneously distributed. In the in vivo experiment, the FFCA had a higher SNR of 169 in the region of interest and more than 48.5 cm of longitudinal coverage, while the corresponding values for the commercial coil were 153 and 22.5 cm. Finally, five sagittal knee images at different flexion angles were acquired. The FFCA could acquire satisfactory knee images at different flexion angles, with the advantages of simplicity, low cost, large field of view and high SNR. It may therefore be further used to improve MR image quality of the knee joint.

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Citations

Sep 26, 2020·Physics in Medicine and Biology·B D CollickA B McMillan
Jun 3, 2020·Scientific Reports·Andreas PortKlaas Paul Pruessmann
Jan 13, 2021·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Andreas PortKlaas P Pruessmann
Aug 12, 2021·Scientific Reports·Elizaveta MotovilovaSimone A Winkler

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