Detunable RF reception antenna device
US8754647B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2010 |
| Grant date | Jun 17, 2014 |
| Priority date | — |
| Expiry date | Mar 25, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/3692
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a RF reception antenna device (10) for receiving MR signals in a MR imaging system. The device (10) comprises a RF resonant circuit including a RF reception antenna (15) for picking up the MR signals, and a RF amplifier (17) connected at its input to the RF resonant circuit for amplifying the picked up MR signals. The invention proposes to make provision for a detection circuit (18) configured to derive a switching signal from an output signal of the RF amplifier (17). A switching circuit (19) is responsive to the switching signal, wherein the switching circuit (19) is configured to switch the RF resonant circuit between a resonant mode and a non-resonant (i.e. detuned) mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.