Arrangement to detune a reception antenna in a local coil

Details Arrangement to detune a reception antenna in a local coil Arrangement to detune a reception antenna in a local coil

2009-03-16

2011-12-27

Koval, Melissa (Department: 2858)

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

C324S322000, C324S307000

Reexamination Certificate

active

08085048

ABSTRACT:
An arrangement to detune a reception antenna in a local coil of a magnetic resonance system, with at least one reception antenna that is fashioned as a loop antenna and that has at least one first capacitance. Radio-frequency signals of a magnetic resonance examination are received via the reception antenna. A switchable detuning circuit contains the first capacitance connected to an oscillating circuit and a first inductance. A reception device to receive a control signal is coupled with the oscillating circuit. The reception device switches the oscillating circuit into a high-resistance state given a received control signal so that a receipt of a radio-frequency signal via the reception antenna is prevented. The reception device is fashioned to receive a wirelessly transmitted radio-frequency control signal. The radio-frequency control signal has a frequency that lies outside of the bandwidth of the radio-frequency signal used for magnetic resonance examination.

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