Apparatus and method to improve magnet stability in an MRI system
US8314615B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2009 |
| Grant date | Nov 20, 2012 |
| Priority date | — |
| Expiry date | Mar 25, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49014
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An MRI apparatus and method comprises an MRI system having a plurality of gradient coils positioned about a bore of a magnet, and an RF transceiver system and an RF switch controlled by a pulse module to transmit RF signals to an RF coil assembly to acquire MR images. The magnet comprises a main coil former and a shield coil former arranged radially around the bore of the magnet, wherein a radius of the shield coil former is greater than a radius of the main coil former. The magnet also includes at least one main coil affixed to the main coil former, at least one shield coil affixed to the shield coil former, and at least one structural member affixed to the main coil former and to the shield coil former to provide structural support and enable longitudinal alignment adjustment between the main coil former and the shield coil former.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.