Magnetic resonance apparatus and methods with shim adjustment
US6208142A · kind A · utility
31Cited by
17References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 7, 1998 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | Dec 7, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/3875
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnet for magnetic resonance imaging of the type arranged to provide fields suitable for imaging in an imaging region outside of the physical structure of the magnet, such as a magnet including plural concentric superconducting coils, generates a field having near-zero radial curvature at one location. Shim coils are actuated to adjust this location in synchronism with tuning of the RF transceiver for slice selection, so that when each slice is selected, that slice is coincident with the location of near-zero radial curvature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.