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Abstract #0194

Development of a Broadside-Coupled Split-Ring Resonator-Based Metasurface to Improve MRI at Ultra-High Fields

Akbar Alipour1, Alan C Seifert1, Bradley N Delman2, and Priti Balchandani1
1BioMedical Engineering and Imaging Institute (BMEII), Icahn School of Medicine at Mount Sinai, Manhattan, NY, United States, 2Diagnostic, Molecular and Interventional Radiology, Icahn School of Medicine at Mount Sinai, Manhattan, NY, United States


There is a growing interest in ultra-high field magnetic resonance neuroimaging because of the greater signal-to-noise ratio (SNR) compared with conventional field strengths. However, visualization at these higher field strengths and Larmor frequencies is challenged by wavelength effects, compromising anatomical coverage of commercial coils. A novel metasurface based on a hybrid structure consisting of an array of broadside-coupled split-ring resonators and high permittivity materials was designed to augment signal at the 7 Tesla 1H Larmor frequency. This reusable surface device markedly improves SNR in caudal head structures that have historically been limited by poor signal.

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