Methods and systems for correcting B0 field in MRI imaging using shim coils
US9891299B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 19, 2014 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | May 31, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/58
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic resonance imaging (MRI) system includes a plurality of radio frequency (RF) coils configured to produce a static B0 field having non-homogeneous characteristics. The MRI system includes an RF transceiver configured to acquire MR imaging data from the RF coils for an area of interest. The system includes a DC source coupled to at least one of the RF coils to form a shimming RF coil, the DC source configured to force a select DC current through the shimming RF coil to at least partially shim the non-homogeneous characteristics of the B0 field. The shimming RF coil includes first and second conductors that exhibit distributed capacitance along a length thereof. At least one of the first and second conductors have first and second termination ends with an elongated and continuous conductive path therebetween to convey the select DC current from the DC source through the shimming RF coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.