Asymmetric superconducting magnets for magnetic resonance imaging
USRE39460E1 · kind E1 · reissue
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2002 |
| Grant date | Jan 9, 2007 |
| Priority date | — |
| Expiry date | Oct 30, 2022 |
Classification
- Technology area (CPC —)General
Abstract
Asymmetric, compact superconducting magnets for magnetic resonance imaging are provided. The magnets have a homogeneous region (the “dsv”) which can be located close to one end of the magnet so as to reduce the sensation of claustrophobia experienced by patients undergoing MRI procedures. The magnets can be designed using a hybrid process in which current density analysis is performed to obtain an initial coil configuration which is then refined using non-linear optimization techniques to obtain a final coil configuration. The hybrid method can incorporate various constraints, including, the location and size of the dsv, the uniformity and strength of the B0 field, stray field strengths outside of the superconducting magnet, and field strengths within the magnet's coils. The hybrid technique can also be used to design compact symmetric superconducting magnets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.