Apparatus for indirect measurement and control of a magnetic gradient field in a nuclear magnetic resonance imaging system
US5237277A · kind A · utility
14Cited by
5References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 12, 1991 |
| Grant date | Aug 17, 1993 |
| Priority date | — |
| Expiry date | Jun 12, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/3852
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A nuclear magnetic resonance imaging system has a power supply with a regulator for a gradient coil, the gradient coil generating a gradient magnetic field. Circuitry is provided for measuring changes in the flux density of the gradient magnetic field, and forming an actual value of the flux density from those measurements. The actual value is compared to a predetermined value, and the gradient field is regulated so that the flux density corresponds to the predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.