Z gradient shielding coil for canceling eddy currents
US6456076B1 · kind B1 · utility
19Cited by
5References
32Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 31, 2001 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | Jan 31, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/4215
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A cylindrical whole body magnetic resonance imaging system gradient shielding coil having multiple windings which are individually wound about a cylindrical support structure such that the windings are evenly distributed in azimuthal angle and interleaved with one another. The windings are preferably spaced in azimuthal angle by 360°/N, where N is the number of windings. In such a design, m azimuthal harmonic components of the error field caused by the effects of eddy currents within the imaging volume can be canceled. Canceling an increasing number of m components requires increasing the N number of windings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.