Method for communicating a magnetic resonance signal, and reception arrangement and magnetic resonance system operable in accord therewith
First Claim
1. A method for communicating a magnetic resonance signal from a magnetic resonance reception antenna to an evaluation device, comprising the steps of:
- receiving a magnetic resonance signal with a magnetic resonance reception antenna at a magnetic resonance frequency;
supplying said magnetic resonance signal from said magnetic resonance reception antenna, without amplification, to a parametric up-converter having non-linear reactance;
emitting auxiliary energy from an auxiliary transmission antenna at an auxiliary frequency;
receiving a part of said auxiliary energy with an auxiliary reception antenna;
supplying a signal representing said auxiliary energy at said auxiliary frequency from said auxiliary reception antenna to said parametric up-converter without amplification;
in said parametric up-converter, using said non-linear reactance, to amplify and mix said signal representing said auxiliary energy and said magnetic resonance signal to form a mixed signal having a mixed frequency equal to a sum of said magnetic resonance frequency and said auxiliary frequency;
supplying said mixed signal from said parametric up-converter to a mixed signal transmission antenna without amplification between said parametric up-converter and said mixed signal transmitter antenna, and emitting said mixed signal from said mixed signal transmission antenna; and
receiving at least a part of said mixed signal with a mixed signal reception antenna and supplying said mixed signal from said mixed signal reception antenna to an evaluation device.
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Accused Products
Abstract
In a communication method for a magnetic resonance signal and a reception arrangement and magnetic resonance system corresponding therewith, a non-linear reactance is supplied with a magnetic resonance signal by a magnetic resonance reception antenna and with auxiliary energy by an auxiliary reception antenna. The auxiliary energy is emitted by an auxiliary transmission antenna. The non-linear reactance mixes the auxiliary energy and the magnetic resonance signal to form a mixed signal with a sum frequency and supplies it to a mixed signal transmission antenna. The latter emits at the mixed frequency. A mixed signal reception antenna receives the mixed signal and supplies it to an evaluation device.
37 Citations
15 Claims
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1. A method for communicating a magnetic resonance signal from a magnetic resonance reception antenna to an evaluation device, comprising the steps of:
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receiving a magnetic resonance signal with a magnetic resonance reception antenna at a magnetic resonance frequency;
supplying said magnetic resonance signal from said magnetic resonance reception antenna, without amplification, to a parametric up-converter having non-linear reactance;
emitting auxiliary energy from an auxiliary transmission antenna at an auxiliary frequency;
receiving a part of said auxiliary energy with an auxiliary reception antenna;
supplying a signal representing said auxiliary energy at said auxiliary frequency from said auxiliary reception antenna to said parametric up-converter without amplification;
in said parametric up-converter, using said non-linear reactance, to amplify and mix said signal representing said auxiliary energy and said magnetic resonance signal to form a mixed signal having a mixed frequency equal to a sum of said magnetic resonance frequency and said auxiliary frequency;
supplying said mixed signal from said parametric up-converter to a mixed signal transmission antenna without amplification between said parametric up-converter and said mixed signal transmitter antenna, and emitting said mixed signal from said mixed signal transmission antenna; and
receiving at least a part of said mixed signal with a mixed signal reception antenna and supplying said mixed signal from said mixed signal reception antenna to an evaluation device. - View Dependent Claims (2, 3, 4)
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5. A reception arrangement for receiving a magnetic resonance signal, comprising:
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a magnetic resonance reception antenna that receives a magnetic resonance signal at a magnetic resonance frequency;
a parametric up-converter, having non-linear reactance, connected to said magnetic resonance reception antenna that receives said magnetic resonance signal at said magnetic resonance frequency from said magnetic resonance reception antenna without amplification;
an auxiliary reception antenna which receives auxiliary energy at an auxiliary frequency, said auxiliary reception antenna being connected to said non-linear reactance and supplying a signal representing said auxiliary energy at said auxiliary frequency to said non-linear reactance;
said parametric up-converter, by means of said non-linear reactance, amplifying and mixing said signal representing said auxiliary energy and said magnetic resonance signal to form a mixed signal having a mixed frequency equal to a sum of said magnetic resonance frequency and said auxiliary frequency; and
a mixed signal transmission antenna connected to said parametric up-converter and supplied with said mixed signal at said mixed signal frequency without amplification between said parametric up-converter and said mixed signal transmission antenna, said mixed signal transmission antenna emitting said mixed signal. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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14. A magnetic resonance system comprising:
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a magnetic resonance reception antenna that receives a magnetic resonance signal at a magnetic resonance frequency;
an auxiliary transmission antenna that emits auxiliary energy at an auxiliary frequency;
an up-converter, having a non-linear reactance, connected to said magnetic resonance reception antenna that receives said magnetic resonance signal at said magnetic resonance frequency from said magnetic resonance reception antenna without amplification;
an auxiliary reception antenna which receives said auxiliary energy at said auxiliary frequency, said auxiliary reception antenna being connected to said up-converter and supplying a signal representing said auxiliary energy at said auxiliary frequency to said up-converter without amplification;
said up-converter by means of said non-linear reactance, amplifying and mixing said signal representing said auxiliary energy and said magnetic resonance signal to form a mixed signal having a mixed frequency equal to a sum of said magnetic resonance frequency and said auxiliary frequency;
a mixed signal transmission antenna connected to said up-converter and supplied with said mixed signal at said mixed signal frequency without amplification between said up-converter and said mixed signal transmission antenna, and said mixed signal transmission antenna emitting said mixed signal;
a mixed signal reception antenna which receives at least a part of said mixed signal; and
an evaluation device connected to said mixed signal reception antenna supplied with a part of the mixed signal received by the mixed signal reception antenna, said evaluation device evaluating said part of said mixed signal. - View Dependent Claims (15)
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Specification