Body coil decoupling circuit
US5256972A · kind A · utility
9Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1993 |
| Grant date | Oct 26, 1993 |
| Priority date | — |
| Expiry date | Jan 12, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/3628
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for decoupling the body coil of the magnetic resonance imaging system when surface coils are used, and especially when the surface coils are used only for receiving. Semi-conductor switches; i.e., diodes are used in the body coil to decouple the body coils. However, gradient generated transients often erroneously switch off the diodes which are then destroyed by a subsequent transmitted RF signal. The invention provides fail safe circuitry for preventing RF transmission when the diode switches are in the non-conducting condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.