Method of designing a high shielding gradient coil for a planar superconducting magnetic resonance imaging system and gradient coil thereof
US11740303B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Nov 26, 2020 |
| Grant date | Aug 29, 2023 |
| Priority date | — |
| Expiry date | Nov 26, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/3806
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present application provides a method of designing a high shielding gradient coil for a planar superconducting magnetic resonance imaging (MRI) system and a gradient coil thereof, the method determines a shielding area according to an outer profile of a metal conductor around the position of the gradient coil in the planar superconducting MRI system, and performs partitioned shielding of a stray field. The constraint values of stray fields at different partitioned zones of the shielding area are adjusted according to the shielding requirements. The primary coils of both the transverse gradient coil and the longitudinal gradient coil optimized by the design method of the high shielding gradient coil contain a reverse coil, which generates a magnetic field that offsets leakage magnetic field of other coils, thus achieving the purpose of reducing the stray field of the gradient coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.