Magnetic resonance imaging system with a multi-channel impedance matching network
US9733324B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2012 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | Jun 1, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/365
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The Magnetic Resonance Imaging (MRI) system includes a radio-frequency transmitter with multiple transmit channels. The MRI system includes an impedance matching network (320, 1402, 1502, 1602) for matching the radio-frequency transmitter to a remotely adjustable radio-frequency antenna (310, 1504, 1602) with multiple antenna elements (312, 314, 316, 318, 1404). The MRI system includes a processor (336) for controlling the MRI system. The execution of the instructions by the processor causes it to: measure (100, 200) a set of radio-frequency properties (352) of the radio-frequency antenna, calculate (102, 202) a matching network command (354) using the set of radio-frequency properties and a radio frequency model (366), and adjust (104, 204) the impedance matching network by sending the matching network command to the impedance matching network, thereby enabling automatic remote impedance matching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.