System and method for reducing peripheral nerve stimulation at higher gradient amplitudes and faster gradient slew rates in magnetic resonance imaging
US11802923B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2022 |
| Grant date | Oct 31, 2023 |
| Priority date | — |
| Expiry date | Aug 15, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/175
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems and methods for imaging a subject with a magnetic resonance imaging system using magnetic field gradients generated by one or more gradient coils operating with gradient coil settings, such as gradient amplitudes and gradient slew rates, above a threshold at which peripheral nerve stimulation is likely to be induced in the subject. A dielectric assembly is positioned adjacent a skin surface of the subject such that the dielectric assembly attenuates the local electric fields induced by the magnetic field gradients, which would be likely to induce PNS when the dielectric assembly is not arranged adjacent the skin surface of the subject. As a result of the dielectric assembly placed adjacent the skin surface of the subject, the gradient coil settings can be increased above the threshold without inducing PNS in the subject.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.