Pre-polarisation magnet arrangement
US11333728B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2017 |
| Grant date | May 17, 2022 |
| Priority date | — |
| Expiry date | Apr 13, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/389
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pre-polarisation magnet arrangement for generating a pre-polarisation field for use in a low field magnetic resonance imaging process, the pre-polarisation magnet arrangement including a pre-polarisation field array including a plurality of permanent pre-polarisation magnets mounted in a support and provided in a circumferentially spaced arrangement surrounding an field of view, a number of the pre-polarisation magnets being movable between respective first and second positions, wherein in the first position the pre-polarisation magnets are configured as a cylindrical Halbach array to generate a pre-polarisation field in the field of view and in the second position the pre-polarisation magnets are configured to minimize the pre-polarisation field in the field of view.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.