Abstract: A magnetic resonance system has a receiver designed to receive and evaluate a pilot tone signal and a magnetic resonance signal at the same time. The receiver additionally has a frequency-dependent attenuator to attenuate a received pilot tone signal relative to a received magnetic resonance signal.

Abstract: A magnetic resonance apparatus with a scanner unit, a patient receiving area at least partly surrounded by the scanner unit, and a patient display unit arranged within the patient receiving area, wherein the patient display unit includes a reflective display.

Abstract: A transmit device for a pilot tone signal with a plurality of discrete frequency components and a magnetic resonance tomograph with such a transmit device. The transmit device includes a frequency stabilization unit that is configured to keep constant a frequency difference between the plurality of frequency components.

Abstract: A position detection apparatus including: an electromagnetic induction module configured to send to a mode triggering module an induced voltage signal generated due to a change in a magnetic field; a mode triggering module configured to output a preset trigger signal based on the induced voltage signal, the trigger signal corresponding to the induced voltage signal; and a signal generating module configured to generate an analog signal of a first mode corresponding to the induced voltage signal based on the received trigger signal, and send the analog signal of the first mode to an MR receiving module of an MRI system via an antenna module, so that: the MR receiving module judges whether the wireless squeeze ball has entered the interior of a body coil from outside a tubular body of the MRI system, based on the analog signal of the first mode.

Abstract: A peripheral device for an MRI system. The peripheral device includes a sensor for receiving a control signal in a surrounding environment of the peripheral device. The peripheral device is configured to obtain, from the control signal, control information of the peripheral device and a reference clock signal for signal processing in the peripheral device. The control information is modulated to the control signal by phase modulation.

Abstract: The disclosure relates to a local coil for a magnetic resonance scanner with an analog-digital converter and a digital mixer, an oscillator, and a data rate decimator. The mixer and the oscillator are configured to downmix a digital magnetic resonance signal with an IQ oscillator signal in such a manner that the magnetic resonance signal at the output of the subsequent data rate decimator is converted into a real-valued low IF signal centered in a frequency range which corresponds either to the positive frequency subrange or to the negative frequency subrange of the baseband.

Abstract: A local coil for a magnetic resonance tomography device is provided to acquire a magnetic resonance signal and a pilot tone signal and to pass them on to a receiver of the magnetic resonance tomography device for evaluation. The pilot tone signal lies in a first frequency range that is disjoint and has a frequency spacing from a second frequency range in which the magnetic resonance signal lies. The local coil has at least one frequency converter that is configured to convert the pilot tone signal and the magnetic resonance signal into a common frequency range.

Abstract: A method for detection of a number of pilot tone signals, a magnetic resonance apparatus, and a computer program product are disclosed. The method includes receiving receive signals according to an MR sequence by an RF receive unit of an MR apparatus, wherein the receive signals include an MR signal and the number of PT signals. The number of PT signals each have a different pilot tone frequency. The number of PT signals are received according to the MR sequence in a number of PT receive time segments having a duration of at least tm, interrupted by pauses. The method further includes digitizing the receive signals by sampling with a first sampling frequency f1 and detecting the number of PT signals from the digitized receive signals by sampling the digitized receive signals with a second sampling frequency f2, wherein the second sampling frequency f2?2/tm.

Abstract: A coil interface apparatus may include: a plug, for connection to a coil apparatus for receiving a magnetic resonance signal via a test subject in the MRI device. The plug may include a first power coupler and at least one first signal coupler. The apparatus may include a socket, for connection to a main body of the MRI device. The socket may include a second power coupler and at least one second signal coupler. The at least one first signal coupler may send a magnetic resonance signal received from the coil apparatus to the at least one second signal coupler by induction. The at least one second signal coupler may receive the sent magnetic resonance signal by induction. The second power coupler may send a power signal to the first power coupler by induction, and the first power coupler may receive the sent power signal.

Abstract: Systems and methods include a plurality of electrical transducers, each of the plurality of electrical transducers comprising an anode and a cathode, a plurality of common-base amplifiers, an input of each of the plurality of common-base amplifiers connected to a cathode of a respective one of the plurality of electrical transducers, a summation point to which an output of each of the plurality of common-base amplifiers is connected, and an amplifier, wherein an input of the amplifier is connected to the summation point.

Abstract: Techniques are disclosed for transferring at least one speech signal of a patient during a magnetic resonance imaging examination, wherein the speech signal is recorded by a speech recording device of a wireless communication device assigned to the patient and transmitted at least as part of a communication signal to a receive device of the magnetic resonance imaging device. The communication signal is a modulated signal or is generated from a modulated signal, and to generate the modulated signal the speech signal is modulated onto a carrier signal. The modulated signal is generated by way of a modulation with reduction of the level of the carrier signal.

Abstract: A digital sensor with a high dynamic range is provided for measuring gradient currents of a magnetic resonance tomography device. The digital sensor has a first signal path and a second signal path arranged mutually parallel. The first signal path and the second signal path have different signal amplifications for the measurement signal that is fed in and an A/D converter for a digitization of the fed-in measurement signals.

Abstract: A wireless transmission device for an MR imaging apparatus, including: a transmitting coupler with a transmitting coil array including one or more first transmitting coils arranged in a first local coil device and to transmit a first intermediate frequency signal, the first local coil device being located on a patient couch and below an examined portion of a subject, wherein the first intermediate frequency signal is generated based on a first magnetic resonance signal received by the first local coil device from the subject; and a first receiving coupler including a first receiving coil array, the first receiving coil array including one or more first receiving coils, located below a trajectory of the patient couch sliding over the magnetic resonance main body, and configured to receive the first intermediate frequency signal from the transmitting coil array in response to the transmitting coil array overlapping with the first receiving coil array.

Abstract: A local coil for a magnetic resonance tomography is designed to acquire a magnetic resonance signal and a pilot tone signal and to forward them to a receiver of the magnetic resonance tomography system for evaluation. The pilot tone signal lies in a first frequency range and the magnetic resonance signal in a second frequency range.

Abstract: A magnetic resonance system has a receiver designed to receive and evaluate a pilot tone signal and a magnetic resonance signal at the same time. The receiver additionally has a frequency-dependent attenuator to attenuate a received pilot tone signal relative to a received magnetic resonance signal.

Abstract: a local coil for a magnetic resonance tomography system and a magnetic resonance tomography system with a local coil. The local coil has a detuning apparatus with a signal path for activation. The local coil has a further functional unit with two operational states having differing energy usage. The local coil further has an energy usage control system which is configured to control the operational states of the functional unit dependent upon an image acquisition.

Abstract: A transmit device for a pilot tone signal with a plurality of discrete frequency components and a magnetic resonance tomograph with such a transmit device. The transmit device includes a frequency stabilization unit that is configured to keep constant a frequency difference between the plurality of frequency components.

Abstract: A method for detection of a number of pilot tone signals, a magnetic resonance apparatus, and a computer program product are disclosed. The method includes receiving receive signals according to an MR sequence by an RF receive unit of an MR apparatus, wherein the receive signals include an MR signal and the number of PT signals. The number of PT signals each have a different pilot tone frequency. The number of PT signals are received according to the MR sequence in a number of PT receive time segments having a duration of at least tm, interrupted by pauses. The method further includes digitizing the receive signals by sampling with a first sampling frequency f1 and detecting the number of PT signals from the digitized receive signals by sampling the digitized receive signals with a second sampling frequency f2, wherein the second sampling frequency f2?2/tm.

Abstract: A pilot tone signal generator, a magnetic resonance tomograph, a method for transmission of a synchronization signal, and a computer program product are disclosed. The pilot tone signal generator includes a receive unit for receipt of a synchronization signal of a system control unit of a magnetic resonance tomograph. The synchronization signal may include a clock signal, and the pilot tone signal generator is configured to emit a pilot tone signal as a function of the synchronization signal.

Abstract: A position detection apparatus including: an electromagnetic induction module configured to send to a mode triggering module an induced voltage signal generated due to a change in a magnetic field; a mode triggering module configured to output a preset trigger signal based on the induced voltage signal, the trigger signal corresponding to the induced voltage signal; and a signal generating module configured to generate an analog signal of a first mode corresponding to the induced voltage signal based on the received trigger signal, and send the analog signal of the first mode to an MR receiving module of an MRI system via an antenna module, so that: the MR receiving module judges whether the wireless squeeze ball has entered the interior of a body coil from outside a tubular body of the MRI system, based on the analog signal of the first mode.