MRI RF ground breaker assembly

Details MRI RF ground breaker assembly MRI RF ground breaker assembly

1994-04-18

1994-12-27

Arana, Louis

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324318, G01V 300

Patent

active

053768850

ABSTRACT:
A very small sized and highly efficient RF ground breaker for use in magnetic resonance imaging (MRI) is constructed on a printed circuit board. A variable capacitor is used to tune the ground breaker to block the desired radio frequency signals from passing along the outside of a coaxial cable conductor. Preferably, the printed circuit board is double-sided with the ground breaker components being mounted on both sides and with RF conductors being mounted within recesses and serving to interconnect printed circuit traces from one side of the circuit board with those on the other side. In a double ground breaker version, undesirable coupling between proximate RF ground breaker components associated with separate channels are purposely intercoupled by capacitance designed to substantially cancel unwanted inter-channel coupling effects.

REFERENCES:
patent: 4682125 (1987-07-01), Harrison et al.
patent: 4922204 (1990-05-01), Duerr et al.

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