Patent ID: 7944210

Claim:
A radio-frequency transmission device for a magnetic resonance system, comprising: a first radio-frequency antenna configured to emit radio-frequency excitation signals in an examination region of a subject to excite nuclear spins in the subject to produce a magnetic resonance image of the examination region; a second radio-frequency antenna configured to emit radio-frequency signals that label nuclear spins in a medium flowing in the examination region by emission of labeling radio-frequency signals, allowing the medium to be identified in said magnetic resonance image of the examination region; a radio-frequency amplifier that supplies signals to said first radio-frequency transmission antenna that cause said first radio-frequency transmission antenna to emit said excitation signals; said second radio-frequency transmission antenna being coupled with said radio-frequency amplifier and said radio-frequency amplifier also supplying signals to said second radio-frequency transmission antenna, with a predetermined radio-frequency transmission power, that cause said second radio-frequency transmission antenna to emit said radio-frequency labeling signals; and an induction coil coupled with said second radio-frequency transmission antenna that receives radio-frequency signals emitted by said radio-frequency amplifier via the first radio-frequency transmission antenna said radio-frequency signals to the second radio-frequency transmission antenna to cause said second radio-frequency transmission antenna to emit said radio-frequency labeling signals.