Nichtlineare steuerbare isolatoranordnung

AT1889883TInactive Publication Date: 2026-03-15TRUSTEES OF BOSTON UNIV
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Patent Information

Application Number
AT2020874805T
Authority / Receiving Office
AT · AT
Patent Type
Patents
Current Assignee / Owner
Priority Date
2019-10-08
Filing Date
2020-10-08
Publication Date
2026-03-15
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Magnetic Resonance Imaging (MRI) machines face limitations in signal-to-noise ratio (SNR) due to noise generated by the machine's circuitry, which corrupts the signals emitted by specimens, and increasing power or improving signal processing has limitations, especially for safe use with living subjects.

Method used

A signal magnifying accessory is introduced, comprising a resonator array with metamaterial resonators and a non-linear control resonator with controllable impedance, which adjusts its resonant frequency to match the MRI machine's operating frequency, enhancing the signal received from specimens without increasing power transmission.

Benefits of technology

This solution significantly improves the signal-to-noise ratio of MRI signals, enhancing image quality and reducing scanning time without increasing power transmission to the specimen, while maintaining specimen safety by minimizing electric field amplification.

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Abstract

A passive MRI enhancing embodiment includes a plurality of resonators and increases signal-to-noise ratio of radiofrequency signals emitted by a specimen and captured by an MRI machine. The apparatus increases the magnetic field component of radiofrequency energy during signal transmission from the MRI machine to the specimen, and / or reception of signals from the specimen to the MRI machine. Use of the apparatus improves the images generated by the MRI machine, and / or reduces the time necessary for the MRI machine to capture the image. An isolator embodiment has a nonlinear resonator controllably configurable alternately into an isolation configuration and a transmission configuration, and a second resonator. The nonlinear resonator is coupled to a communications port and is substantially communicatively isolated from the second resonator when the nonlinear resonator is in the isolation configuration, and is communicatively coupled to the second resonator when the nonlinear resonator is in the transmission configuration.
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