Arrangements and method for shimming a magnetic field
US8362778B2 · kind B2 · utility
5Cited by
5References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 23, 2010 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | Mar 22, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/3815
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A shim arrangement for increasing the homogeneity of a magnetic field within a homogeneous field region, comprising: shim channels extending within a volume between a magnetic field generator and the homogeneous field region; at least one piece of shim material located within each shim channel; an arrangement for moving each shim piece along the corresponding shim channel; and retaining means for retaining each shim piece in position. Shimming is performed by moving shim pieces within the shim channels, with the magnet at field. No shim pieces are added to, or removed from, the shim channels during the shimming step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.