MRI apparatus, NMR analyzer, and gantry
US7541812B2 · kind B2 · utility
4Cited by
1References
25Claims
0Family size
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Key dates
| Filing date | Jan 31, 2008 |
| Grant date | Jun 2, 2009 |
| Priority date | — |
| Expiry date | Jan 31, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/3873
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic resonance imaging apparatus includes a static magnetic field generating unit, a main coil (gradient magnetic coil), a radio frequency coil, and a shimming structure unit. The shimming structure unit includes first iron shims and second iron shims. The first iron shims are disposed between the main coil and a shield coil of the gradient magnetic coil and disposed in a central axial center of the static magnetic field generating unit. The second iron shims are disposed on an outer side of the main coil and the shield coil and disposed on a central axial end of the static magnetic field generating unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.