Abstract: A local coil, a magnetic resonance tomography scanner, a system including local coil and magnetic resonance tomography scanner, and a method for operating the system are provided. The local coil has an active detuning facility and a passive detuning facility with substantially separate circuits. The magnetic resonance tomography scanner includes a local coil actuation for actuating the active detuning facility and a local coil monitoring for the detuning facilities, which likewise have substantially separate circuits.

Abstract: The disclosure relates to a local coil, a magnetic resonance tomography scanner, a system including local coil and magnetic resonance tomography scanner, and a method for operating the system. The local coil has an active detuning facility and a passive detuning facility with substantially separate circuits. The magnetic resonance tomography scanner includes a local coil actuation for actuating the active detuning facility and a local coil monitoring for the detuning facilities, which likewise have substantially separate circuits.

Abstract: In a method for isochronous communication of components of a multi-component apparatus, which communicate via peer-to-peer communication connections created by a switch, a periodic communication clock signal is provided by a control computer to all the components, with a communication window between two communication clock cycles of the communication clock signal, in which a communication information item of the isochronous communication is transferrable from a transferring component to at least one addressed component. A synchronization, in relation to the communication clock signal, between at least two of the components is produced by at least one synchronization message sent via the switch by one of the components to be synchronized to all the other components to be synchronized in a communication time window.

Abstract: A method for communication between at least two computing facilities of a medical imaging facility via a single communication line is disclosed. In the method, communication information assigned to different communication types received in each case via a dedicated data input is merged to form data structures of a defined size to be transmitted via the communication line. The data structures are transmitted cyclically via the communication line with an interval of one cycle time and communication information of the different communication types is extracted from data structures received via the communication line and output at data outputs assigned to the respective communication types. The communication types include a first packet-oriented communication type and a second isochronous communication type corresponding to isochronous direct channel communication.

Abstract: Systems and methods are provided for receiving magnetic resonance signals by a magnetic resonance device. The magnetic resonance signals are received using at least one active receive coil element. The magnetic resonance device includes a multiplexer with a signal output and a number of signal inputs. A first portion of the signal inputs are each connected with one of the at least one active receive coil element. The remaining portion of the number of signal inputs are not connected to an active receive coil element. The multiplexer does not interconnect at least one part of the remaining part of the number of signal inputs with the signal output.

Abstract: Apparatuses and a method are provided for transmitting signals in a medical imaging system. The method includes transmitting signals wirelessly between at least one receive facility and a facility of the imaging system via a radio network.

Abstract: A method for monitoring a temporal change in a magnetic field in a magnetic resonance device, as well as an evaluation unit, a magnetic resonance device, and a computer program product for performing the method are provided. The method provides that a position-dependent magnetic field distribution that is produced by the plurality of gradient coils is provided with a plurality of monitoring points. In addition, time-dependent gradient values of the plurality of gradient coils are ascertained. Based on position-dependent magnetic field distribution and the time-dependent gradient values, the temporal change in the magnetic field is ascertained. The temporal change in the magnetic field is monitored by comparing the temporal change in the magnetic field with at least one limit value.

Abstract: In a method for isochronous communication of components of a multi-component apparatus, which communicate via peer-to-peer communication connections created by a switch, a periodic communication clock signal is provided by a control computer to all the components, with a communication window between two communication clock cycles of the communication clock signal, in which a communication information item of the isochronous communication is transferrable from a transferring component to at least one addressed component. A synchronization, in relation to the communication clock signal, between at least two of the components is produced by at least one synchronization message sent via the switch by one of the components to be synchronized to all the other components to be synchronized in a communication time window.

Abstract: A magnetic resonance tomography system includes a computer configured to implement signal processing of transmit signals and/or receive signals. The signal processing is configured to implement a mixer, an upsampler, a decimator, a filter, or any combination thereof.

Abstract: Systems and methods are provided for receiving magnetic resonance signals by a magnetic resonance device. The magnetic resonance signals are received using at least one active receive coil element. The magnetic resonance device includes a multiplexer with a signal output and a number of signal inputs. A first portion of the signal inputs are each connected with one of the at least one active receive coil element. The remaining portion of the number of signal inputs are not connected to an active receive coil element. The multiplexer does not interconnect at least one part of the remaining part of the number of signal inputs with the signal output.

Abstract: In a magnetic resonance (MR) apparatus and an operating method therefor, a sequence with which the MR data are to be recorded is created in or provided to a control computer of the MR apparatus. A maximum RF output and a maximum gradient performance of the scanner magnetic resonance apparatus during the performance of the sequence are determined by simulating or analyzing the performance of the sequence in the control computer, and it is verified whether the maximum RF output and/or the maximum gradient performance violate predetermined limit values. Execution of the sequence to record the MR data is performed only if the verification showed that the limit values are not violated.

Abstract: A method for communication between at least two computing facilities of a medical imaging facility via a single communication line is disclosed. In the method, communication information assigned to different communication types received in each case via a dedicated data input is merged to form data structures of a defined size to be transmitted via the communication line. The data structures are transmitted cyclically via the communication line with an interval of one cycle time and communication information of the different communication types is extracted from data structures received via the communication line and output at data outputs assigned to the respective communication types. The communication types include a first packet-oriented communication type and a second isochronous communication type corresponding to isochronous direct channel communication.

Abstract: Apparatuses and a method are provided for transmitting signals in a medical imaging system. The method includes transmitting signals wirelessly between at least one receive facility and a facility of the imaging system via a radio network.

Abstract: A local transmit coil for a magnetic resonance tomograph is provided. The local transmit coil includes a signal transmission device for signal transmission to the magnetic resonance tomograph, and a transmission antenna for generating a magnetic excitation field. The local transmit coil further includes an evaluation device for monitoring a function of the local transmit coil. The evaluation device is configured to transmit a status signal relating to the local transmit coil via the signal transmission device.

Abstract: Apparatuses and a method are provided for transmitting signals in a medical imaging system. The method includes transmitting signals wirelessly between at least one receive facility and a facility of the imaging system via a radio network.

Abstract: A method for emitting a sequence of high frequency pulses that may have different envelopes in a magnetic resonance tomography system is provided. A digital instruction signal that specifies the envelope for the high frequency pulses that are to be emitted is received. A digital control signal is transmitted to a high frequency unit for generating high frequency pulses, depending on the instruction signal. A test signal that allows notification of a current overload situation is received. The current control signal is reduced if the test signal indicates an overload situation.

Abstract: A method for operating a magnetic resonance apparatus by a safety unit, taking into account persons fitted with an implant, a safety unit, a safety system, a magnetic resonance apparatus, and a computer program product are provided. The magnetic resonance apparatus includes a first part and a second part. The first part is operated separately from the second part and includes the safety unit. During an examination of a person fitted with an implant, the safety unit checks that the magnetic resonance apparatus, in a restricted operating mode, is complying with implant-conformant limit values.

Abstract: A circuit arrangement for driving a transmission coil arrangement with at least two individual transmission coils of a magnetic resonance system for supplying a radiofrequency signal for producing alternating electromagnetic fields over at least two channels, with in each case a digital section and an analog section, is provided. In the digital section, in an envelope generator, base frequency signals that respectively generate an envelope are provided. The circuit arrangement also includes an intermediate frequency oscillator that generates a common intermediate frequency, a frequency mixer per channel for mixing the common intermediate frequency into the base frequency signals, and in the analog sections of the channels, respectively, second frequency mixers that mix a common radiofrequency signal into each base frequency signal.

Abstract: A method for monitoring a temporal change in a magnetic field in a magnetic resonance device, as well as an evaluation unit, a magnetic resonance device, and a computer program product for performing the method are provided. The method provides that a position-dependent magnetic field distribution that is produced by the plurality of gradient coils is provided with a plurality of monitoring points. In addition, time-dependent gradient values of the plurality of gradient coils are ascertained. Based on position-dependent magnetic field distribution and the time-dependent gradient values, the temporal change in the magnetic field is ascertained. The temporal change in the magnetic field is monitored by comparing the temporal change in the magnetic field with at least one limit value.

Abstract: In a magnetic resonance (MR) apparatus and an operating method therefor, a sequence with which the MR data are to be recorded is created in or provided to a control computer of the MR apparatus. A maximum RF output and a maximum gradient performance of the scanner magnetic resonance apparatus during the performance of the sequence are determined by simulating or analyzing the performance of the sequence in the control computer, and it is verified whether the maximum RF output and/or the maximum gradient performance violate predetermined limit values. Execution of the sequence to record the MR data is performed only if the verification showed that the limit values are not violated.