Topological Metamaterial for Magnetic Resonance Imaging

TL;DR

This paper introduces a topological metamaterial that enhances MRI signal reception by leveraging quasi-two-dimensional boundary states, leading to improved performance over traditional coils and offering a new paradigm for MRI coil design.

Contribution

The study presents a novel topological metamaterial design for MRI coils, utilizing weak couplings to create boundary states that improve signal transmission and magnetic field enhancement.

Findings

Demonstrated superior MRI signal reception performance

Achieved low-loss signal transmission via topological states

Showed potential for more accessible MRI coil designs

Abstract

Magnetic Resonance Imaging (MRI) is crucial in global healthcare, but the traditional receive coils, as a core component of MRI, SNR enhancement is limited due to the optimization of channel number and magnetic field strength faces high cost and complexity challenges. Here, we demonstrate the use of a topological material to enhance MRI signal reception. Designed with a stack of weak couplings, this material forms quasi-two-dimensional dual topological boundary states. High properties are achieved through low-loss signal transmission via these topological states, as well as only enhanced local magnetic fields and increased number of channels. Initial tests demonstrate superior performance and accessibility compared to commercial coils, suggesting significant potential. This concept introduces a transformative paradigm for all MRI coil designs.