Optimized gradient coils and shim coils for magnetic resonance scanning systems
US5760582A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 23, 1992 |
| Grant date | Jun 2, 1998 |
| Priority date | — |
| Expiry date | Jul 23, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/385
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Gradient coil assemblies and shim coil assemblies are disclosed for magnetic resonance imaging ("MRI") devices, wherein the coil assemblies comprise a coil support and a conductive wire having a locus described by a solution of a current continuity equation over a finite interval for which certain terms of the magnetic field expansion are equal to zero, for generating non-uniform magnetic fields. The gradient coil produces gradient fields and magnetic fields which cancel non-uniformities in the magnetic field of the magnet of the MRI device. Shim coils cancel such non-uniformities, as well. A method of manufacturing such coils is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.