Abstract: The disclosure relates to an electronic apparatus for a magnetic resonance tomography unit, a system including an electronic apparatus, a magnetic resonance tomography unit, and a method for operation. The apparatus has a detector for detecting a source of interference. The detected signal interferes with image acquisition.

Abstract: A local coil for a magnetic resonance tomography system is provided. The local coil has a plate-shaped local coil body with a main extension plane, and an electronic apparatus within the local coil body. A wireless local coil generates waste heat. Therefore, the local coil has an electrically non-conducting heat sink body that is connected for the conduction of heat to the electronic apparatus, and is configured as a type of plate within the local coil body in order to distribute heat of the electronic apparatus in the main extension plane of the local coil body. This provides that a surface of the local coil has a standards-compliant temperature.

Abstract: A device for generating wideband signals in a local coil and a magnetic resonance tomography system with the device are provided. The device has a first analog-digital converter for digitizing a magnetic resonance signal, a signal conditioner, a pulse filter, and a transmit antenna. The signal conditioner is configured to increase a harmonic component in an output signal of the first analog-digital converter, and the pulse filter is configured to restrict an output signal of the signal conditioner to a predetermined frequency band before the output signal of the signal conditioner is emitted via the transmit antenna. The receiver is configured to receive and digitize the signal via a receive antenna, and regain a digital representation of the magnetic resonance signal by a signal processor.

Abstract: The disclosure relates to a local coil with an energy supply device, a system including an energy transmitting device and a local coil, and a method for operating the system. The local coil includes an energy store, a clock control system, and an energy receiving device for the wireless reception of energy from the energy transmitting device. The clock control system of the local coil is configured to be synchronized with an external clock source. The clock control system has a signal connection with the energy supply device and is configured to control energy take-up via the energy receiving device in dependence on the synchronization.

Abstract: A device for generating wideband signals in a local coil and a magnetic resonance tomography system with the device are provided. The device has a first analog-digital converter for digitizing a magnetic resonance signal, a signal conditioner, a pulse filter, and a transmit antenna. The signal conditioner is configured to increase a harmonic component in an output signal of the first analog-digital converter, and the pulse filter is configured to restrict an output signal of the signal conditioner to a predetermined frequency band before the output signal of the signal conditioner is emitted via the transmit antenna. The receiver is configured to receive and digitize the signal via a receive antenna, and regain a digital representation of the magnetic resonance signal by a signal processor.

Abstract: A magnetic resonance device includes a radiofrequency unit that includes a radiofrequency antenna, at least one radiofrequency line and at least one radiofrequency injection point. Radiofrequency signals are transferred to the radiofrequency antenna by the at least one radiofrequency line and are coupled into the radiofrequency antenna at the at least one radiofrequency injection point. The magnetic resonance device also includes a patient receiving zone that is at least partially enclosed by the radiofrequency antenna, and a motion detection unit for detecting a movement of a patient that may be positioned within the patient receiving zone. At least one radiofrequency line includes at least one injection element by which at least one motion detection signal of the motion detection unit is coupled into the radiofrequency line.

Abstract: The invention relates to a method for operating a local coil for a magnetic resonance scanner, which has a receiving antenna and a signal converter, and is coupled to a patient table by a signal line in terms of signal communication. The receiving antenna receives an analog magnetic resonance signal in a first signal frequency range, wherein the analog magnetic resonance signal is converted into a digital magnetic resonance signal by the signal converter and is frequency-shifted such that the digital magnetic resonance signal is shifted into a second signal frequency range that does not overlap with, and is preferably higher than, the first signal frequency range.

Abstract: A data transmission unit includes a transmit unit and a receive unit. The transmit unit and the receive unit are relatively movable with respect to another of the receive unit and the transmit unit. The data transmission unit further includes a coupler, the receive unit being configured to receive data from the transmit unit via the coupler even during a relative movement between transmit unit and receive unit. The coupler includes a first dielectric waveguide including a conductor body and a retaining structure.

Abstract: A transmission system is disclosed for the contactless transmission of at least one electrical and/or electromagnetic signal from a first device part of a data-generating device to a second device part of the device by way of electrical and/or electromagnetic coupling. The first device part is set up to perform a movement relative to the second device part during operation. The transmission system includes a first transmission unit and a second transmission unit, either being arrangable on the first device part and the other being arrangable on the second device part. The first transmission unit includes a first coupler and a first auxiliary coupler and the second transmission unit includes a second coupler. For the electrical and/or electromagnetic coupling, the coupling strengths between the first coupler and the second coupler and between the first auxiliary coupler and the second coupler have different functional distance dependences.

Abstract: The disclosure relates to a local coil with an energy supply device, a system including an energy transmitting device and a local coil, and a method for operating the system. The local coil includes an energy store, a clock control system, and an energy receiving device for the wireless reception of energy from the energy transmitting device. The clock control system of the local coil is configured to be synchronized with an external clock source. The clock control system has a signal connection with the energy supply device and is configured to control energy take-up via the energy receiving device in dependence on the synchronization.

Abstract: A coupler includes a first and second coupler element, with a respective first and second transmission element. In an embodiment, a first signal contact for connection to a signal conductor is arranged on a first end of the first transmission element; a second signal contact for connection to a signal conductor is arranged on a first end of the second transmission element; the first transmission element forms a plurality of first U-shaped curves between the first end and a second end; and the second transmission element forms a plurality of second U-shaped curves between the first end and a second end. The first transmission element is configured, in operation, to transmit a signal supplied at the first signal contact to the second transmission element via directional coupling and the second transmission element is configured, in operation, to receive and output the signal via the second signal contact.

Abstract: A data transmission unit includes a transmit unit and a receive unit. The transmit unit and the receive unit are relatively movable with respect to another of the receive unit and the transmit unit. The data transmission unit further includes a coupler, the receive unit being configured to receive data from the transmit unit via the coupler even during a relative movement between transmit unit and receive unit. The coupler includes a first dielectric waveguide including a conductor body and a retaining structure.

Abstract: The invention relates to a method for operating a local coil for a magnetic resonance scanner, which has a receiving antenna and a signal converter, and is coupled to a patient table by a signal line in terms of signal communication. The receiving antenna receives an analog magnetic resonance signal in a first signal frequency range, wherein the analog magnetic resonance signal is converted into a digital magnetic resonance signal by the signal converter and is frequency-shifted such that the digital magnetic resonance signal is shifted into a second signal frequency range that does not overlap with, and is preferably higher than, the first signal frequency range.

Abstract: A coupler includes a first and second coupler element, with a respective first and second transmission element. In an embodiment, a first signal contact for connection to a signal conductor is arranged on a first end of the first transmission element; a second signal contact for connection to a signal conductor is arranged on a first end of the second transmission element; the first transmission element forms a plurality of first U-shaped curves between the first end and a second end; and the second transmission element forms a plurality of second U-shaped curves between the first end and a second end. The first transmission element is configured, in operation, to transmit a signal supplied at the first signal contact to the second transmission element via directional coupling and the second transmission element is configured, in operation, to receive and output the signal via the second signal contact.

Abstract: An MR device includes at least one body coil for generating a B1 magnetic field and at least one radiofrequency line routed through the B1 magnetic field. The at least one radiofrequency line has at least one frequency filter for blocking a voltage induced by the B1 magnetic field. At least one section of the radiofrequency line routed through the B1 magnetic field is embodied in printed circuit board technology on at least one printed circuit board, and information-carrying signals may be transmitted over the at least one radiofrequency line on a different frequency than the frequency of the voltage induced by the B1 magnetic field.

Abstract: An arrangement includes a superconducting split ring resonator, a cryostat, and a copper coil. The resonator is arranged in the cryostat and includes at least one ring-shaped conductor made of a superconducting material and including an opening and a taper. The copper coil may be used to transmit a MRI excitation signal. This signal causes a current to be induced in the conductor that leads to the breakdown of the superconductivity. The conductor is detuned and therefore no longer develops an interfering effect. It is possible for the effect of the breakdown of superconductivity to be used for detuning in a targeted manner. After the transmission is complete, the conductor returns into the superconducting state and acts as a superconducting reception antenna for the MRI measurement signal. The copper coil is inductively coupled to the conductor and configured to read out the signal induced in the conductor.

Abstract: The invention relates to an inductive charging device having at least one inductive charging coil wound about a coil axis, and an electric or dielectric antenna, which is arranged at a location that is shifted parallel to the coil axis in relation to a location of a region of the charging coil, a location within the at least one charging coil, or a location between the charging coils. The electric vehicle and the charging station each have such an inductive charging device. With the method, one or two such inductive charging devices are used, wherein by means of the inductive charging coils, energy is transmitted, and by means of the antennas, communications data are transmitted.

Abstract: An antenna apparatus provides for receiving magnetic resonance signals from an examination object during magnetic resonance imaging using a magnetic resonance device. The antenna apparatus includes a resonator with a plurality of electrically conductive conductor loops, which are each interrupted by a number of electrically insulating slits. The antenna apparatus further includes a carrier substrate for holding the conductor loops and a cable connection apparatus having a number of shielding apparatuses. At least one of the number of shielding apparatuses provides a conductive coupling to a virtual ground of at least one conductor loop.

Abstract: A shielding for a magnetic resonance tomography device, in the form of a shell of a cylinder, for arrangement radially between a radially outer gradient coil system for generating a magnetic field gradient in an examination space of the MRT device and a radially inner RF coil system for sending and/or receiving RF signals into the examination space and from the examination space, is provided. The shielding includes strips that are arranged on a shielding surface, are electrically conductive and are separated from one another by slits. The strips have respectively angled and/or rounded profile segments to create a two-dimensional pattern of shielding rings on the shielding surface.

Abstract: An apparatus for checking for a presence of an electrically conductive body has at least one transmitting device and at least one receiving device. The transmitting device provides a transmission signal in the form of a magnetic field. The receiving device generates a reception signal from the transmission signal that is induced into the receiving device. The transmitting and receiving devices are configured in such a way that, when the electrically conductive body is absent, partial reception signals form in the receiving device on account of the induced transmission signal and the partial reception signals substantially cancel one another out in the reception signal.