Wireless local transmit coils and array with controllable load
US9488705B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 5, 2012 |
| Grant date | Nov 8, 2016 |
| Priority date | — |
| Expiry date | Oct 28, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/5659
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A local radio frequency (RF) transmitting coil (26) of a magnetic resonance imaging system (5) has a plurality of coil elements (100). Each coil element (100) has an adjustable load (62) which is adjusted by a control unit (60) to adjust a transmitted B1 field distribution. The load can be adjusted to shim for a uniform B1 field distribution. Non-uniform B1 field distributions can be selected to perform magnetic resonance sequences that use such B1 field distributions, such as parallel imaging. The B1 field distribution can be changed during the magnetic resonance sequence to track a moving region of interest, time division multiplex parallel imaging, and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.