Biplanar RF coil for magnetic resonance imaging systems
US5280248A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1992 |
| Grant date | Jan 18, 1994 |
| Priority date | — |
| Expiry date | Jul 24, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/422
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A superconducting magnet (10) generates a uniform, static magnetic field through a central bore (12) along its longitudinal or z-axis. A biplanar gradient coil assembly (44) is inserted into the bore to create gradients across the static magnetic field along orthogonal x, y, and z-axes. A biplanar radio frequency coil assembly (50, 80) is inserted into the bore for transmitting radio frequency signals into a subject and receiving magnetic resonance signals from the subject. The radio frequency coil includes a first biplanar coil assembly (50) for generating RF signals in an x-direction and a second biplanar coil assembly (80) for generating RF signals in a y-direction. The two biplanar coil assemblies each include a plurality of conductors (52, 82) along a first plane and a second plurality of conductors (54, 84) along a parallel second plane. The conductors extend parallel to the z-direction. Capacitors (56, 58, 94) are connected in series with each of the conductors in order to control the current flow such that the current flow in each plane is uniform across the plane. The ends of the electrical conductors are connected together (66, 88) such that the current flows are equal an…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.