Diagnostic magnetic resonance apparatus operable with reduced noise
US5661399A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 26, 1996 |
| Grant date | Aug 26, 1997 |
| Priority date | — |
| Expiry date | Mar 26, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/385
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a diagnostic nuclear magnetic resonance apparatus having a main magnetic field and gradient coils for generating gradient fields, the gradient coils including conductors that run essentially perpendicularly to the direction of the main magnetic field, compensating coils for reducing the main magnetic field present in the environment of the conductors are allocated to these conductors. By reducing the effect of the main magnetic field in regions near these conductors, oscillations of these conductors arising due to switching of the gradient current are reduced, thereby reducing bothersome noises which arise during the production of an image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.