Split self-shielded gradient coil system, with power supply system for individually adjusting currents of sub-coil groups
US12366620B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jun 22, 2023 |
| Grant date | Jul 22, 2025 |
| Priority date | — |
| Expiry date | Oct 12, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/56518
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gradient coil system for use in a magnetic resonance device comprises a main coil having at least two main sub-coils for generating a gradient coil magnetic field in a target volume, a shielding coil having at least two shielding sub-coils for shielding the main coil, and a power supply system configured to adjust a plurality of electric currents. The main coil and the shielding coil are arranged coaxially along a z-axis, wherein the gradient coil magnetic field is aligned with the z-axis and varies along a gradient direction. The gradient coil system comprises N sub-coil groups, with N≥2, with each of the N sub-coil groups comprising a main sub-coil and a shielding sub-coil (3a-3d) connected in series. The power supply system is configured to adjust the electric current of each of the N sub-coil groups individually. The system provides strong gradient coil magnetic fields with improved switching time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.