Integral passive shim system for a magnetic resonance apparatus
US6897750B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 29, 2002 |
| Grant date | May 24, 2005 |
| Priority date | — |
| Expiry date | Jun 2, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/3873
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In an arrangement for adjusting the spatial dependence of a magnetic field in a working volume of a main field magnet (19) by means of ferromagnetic field shaping elements (16), the field shaping elements (16) are formed from foils (1, 5, 7, 8) and/or sheet metals (10) having openings (2, 3) whose shape, position and size are selected such that the shape and the amount of the remaining ferromagnetic material produces a desired spatial dependence of the magnetic field in the working volume of the main field magnet for appropriate positioning of the foils (1, 5, 7, 8) and/or sheet metals (10) relative to the working volume of the main field magnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.