MRI using auxiliary insert gradient coil to produce intense auxiliary magnetic gradient pulses
US5235279A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1992 |
| Grant date | Aug 10, 1993 |
| Priority date | — |
| Expiry date | Feb 19, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/385
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An auxiliary insert MRI gradient coil is used to produce intense auxiliary magnetic gradient pulses during MRI sequences to improve MRI system performance. Although the auxiliary gradient coil may be of considerably reduced dimensions, thus, having considerably reduced uniformity, linearity and/or reproducibility than standard MRI gradient coils, coordinated use of both the regular MRI gradient coils and the auxiliary gradient coil can produce considerably enhanced MRI system performance in certain applications. Such auxiliary magnetic gradient coil may be used, for example, to provide spoiler pulses between MRI spin echo subsequences, as diffusion gradient pulses in diffusion MRI studies or as the oscillating gradient used to form successive gradient echoes in echo planar imaging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.