Body coil decoupling circuit

Details Body coil decoupling circuit Body coil decoupling circuit

1993-01-12

1993-10-26

Arana, Louis

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324322, G01V 300

Patent

active

052569721

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.

REFERENCES:
patent: 4620155 (1986-10-01), Edelstein
patent: 4757290 (1988-07-01), Keren
patent: 4782298 (1988-11-01), Arakawa et al.
patent: 4820987 (1989-04-01), Mens

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