Abstract: A control device of an imaging system has a computer with communication interfaces for central control of the imaging system, and components each having a communication interface for local control of units of the imaging system. The communication interfaces of the components are respectively connected via a connection with an interface of the computer, and a transmitting component, among the components transfers data via the computer to a receiving component, among the components, for the exchange of information between the components.

Abstract: A modular system is provided for fabricating a control computer for a selected magnetic resonance (MR) apparatus in a group of MR apparatuses having different design features. The modular system includes commonality modules for implementing functions that are identical for all MR apparatuses in the group, and scaling modules for implementing functions that can be provided to the required extent, dependent on the design features, for all MR apparatuses in the group. All modules have predefined interfaces to the other modules. The commonality modules and the scaling modules are each implemented as a hardware unit, and are combined with at least one variability module of the modular system implemented as a hardware unit designed specifically for the design features, to form a real-time unit of the control computer.

Abstract: In a method, device and system for obtaining a medical image data set, a raw data stream is produced by a data acquisition device, the raw data stream including at least digital data of a medical raw data image set. The raw data stream is provided to a data compression device, wherein it is compressed. The compressed raw data stream is transferred to a data decompression device, wherein it is decompressed. The decompressed raw data stream is transferred to an image calculation tool, which produces a medical image data set operating on the decompressed raw data stream.

Abstract: In a method and a magnetic resonance (MR) system for automated determination of the resonance frequency of a nucleus for magnetic resonance examinations, at least one MR signal is detected, and is Fourier-transformed into a spectrum composed of elements that can be represented as a vector. An analysis of the spectrum is conducted, wherein at least two cross-correlation coefficients of at least one model spectrum are determined by use of the measured spectrum. Prior to the analysis, a spectrum matrix having at least two vectors is determined from the spectrum, with each vector of the spectrum matrix being formed using all or some of the spectrum.

Abstract: In a method and controller for controlling a magnetic resonance system, a sequence of synchronized control commands is transmitted to different system components of the magnetic resonance system. For different system components a number of control commands is supplied in a relative chronological order in relation to a defined system time, wherein the control commands in the relative chronological order are each allocated times that specify when a particular control command should be executed in relation to a defined system time. The control commands are passed in the relative chronological order to a data-converting interface, which forwards the control commands in a latency-compensating data transfer protocol via a bus system, which has a deterministic latency, to the individual system components.

Abstract: In a magnetic resonance (MR) imaging apparatus and control method therefor, multiple frequency spectra of a material of the examination object are detected using at least one radio-frequency coil of and MR scanner, the coil having a number of coil elements and at least two of the frequency spectra are detected individually detected by respective, different coil elements. A number of resonant frequencies of at least one molecule in the material are established in the number of frequency spectra. Control information is formulated based on the number of resonant frequencies. The magnetic resonance scanner is controlled using the control information.

Abstract: In a method for operating a medical imaging examination apparatus having multiple subsystems controlled by a control computer in a scan sequence, a control protocol for the scan is provided to the control computer, which determines sequence control data for the control protocol that define different functional subsequences of the scan, with different effective volumes assigned to each functional subsequence. Current ambient conditions of the apparatus are determined that are decisive for the determined relevant sequence control data and associated effective volumes. Control signals for the scan are determined from the sequence control data, the effective volumes and the current ambient conditions determined that optimize the functional subsequences of the scan.

Abstract: In a method for operating a medical imaging apparatus having subsystems, a control protocol assigned to a scan sequence to be performed is provided to a control computer that determines sequence control data for the control protocol, which define different functional subsequences of the scan sequence. Different effective volumes are assigned to each functional subsequence, and current ambient conditions of the apparatus are determined for the sequence control data and associated effective volumes, for a series of states of physiological processes that occur during the scan sequence. Control signals for the scan sequence are determined from the sequence control data, the effective volumes and the current ambient conditions per observed state, that optimize the functional subsequences of the scan sequence locally.

Abstract: In a method for operating a medical imaging apparatus having subsystems, a control protocol assigned to a scan sequence to be performed is provided to a control computer that determines sequence control data for the control protocol, which define different functional subsequences of the scan sequence. Different effective volumes are assigned to each functional subsequence, and current ambient conditions of the apparatus are determined for the sequence control data and associated effective volumes, for a series of states of physiological processes that occur during the scan sequence. Control signals for the scan sequence are determined from the sequence control data, the effective volumes and the current ambient conditions per observed state, that optimize the functional subsequences of the scan sequence locally.

Abstract: In a method for operating a medical imaging examination apparatus having multiple subsystems, current ambient conditions in a scan volume of the apparatus are determined and stored in a global ambient condition parameter set. A control computer starts a scan sequence according to a selected scan protocol, and sequence control data that define different functional sub-sequences for the respective subsystems are provided to the control computer. Different effective volumes are assigned to each functional sub-sequence, and respective current sub-regions in the effective volume associated with the respective sub-sequence are determined, in which a volume optimization is to take place. Control signals for the scan sequence are calculated using the sequence control data, the global ambient condition parameter set, and the determined current sub-regions of the affected volumes, in order to optimize the functional sub-sequences at least with regard to the current sub-region of the assigned effective volume.

Abstract: In a method for determining time windows in a scan sequence, in which values of setting parameters of a scan can be changed during a current scan without adversely affecting the scan data obtained with the scan, comprising the following a scan sequence is loaded into a control computer, that then determines the time windows in the scan sequence in which values of setting parameters can be changed during a current scan, on the basis of an analysis of useful coherences in the scan sequence. The determined time windows are stored or processed so as to be available to operate an imaging apparatus to execute the scan sequence.

Abstract: In a method for operating a medical imaging apparatus having multiple subsystems, a control protocol assigned to a scan sequence to be performed is provided to a control computer that determines sequence control data for the control protocol, which define different functional subsequences of the scan sequence. Different effective volumes are assigned to each functional subsequence, and current ambient conditions of the apparatus are determined for the sequence control data and associated effective volumes. Control signals for the scan sequence are determined from the sequence control data, the effective volumes and the current ambient conditions that optimize the functional subsequences of the scan sequence locally, at least with regard to a sub-region of the respective effective volumes.

Abstract: In a method for making calibration measurements in a magnetic resonance (MR) system, in order to acquire an MR image of an examination subject, wherein the MR unit has a computer for operating the MR scanner, and a system control computer designed to control multiple system components of the MR scanner, a preparation step is executed by the computer to prepare a first calibration step, in which a first parameter of a system component is matched to the examination subject via the system control computer, and to prepare a second calibration step, in which a second parameter of a system component is matched to the examination subject via the system control computer. The first calibration step is executed by the system control computer as is the second calibration step. The preparation step is executed by the computer to prepare one of the first or second calibration steps before one of the calibration steps is initiated by the system control computer.

Abstract: A magnetic resonance facility has a main magnet unit with a cylindrical patient accommodation region, and an optical display apparatus with at least one display unit disposed within the patient accommodation region in a region viewable by a patient positioned therein for the magnetic resonance measurement. The display apparatus is shaped at least partially to follow the boundary of the patient accommodation region.

Abstract: A method for operating a magnetic resonance tomograph having at least one receiving antenna, at least one converter device for analog/digital conversion and a programmable computing device is provided. The method includes generating, with the converter device, digital measured values by digitizing the analog reception signal from the receiving antenna and/or at least one analog signal derived from the reception signal. A time-coding device adds an item of time information that describes the recording time of the measured values to each of the digital measured values or to groups of measured values including a plurality of the digital measured values in order to generate a time-coded data stream. The programmable computing device processes the time-coded data stream further.

Abstract: In a method and magnetic resonance system for the automated determination of the resonance frequency or resonance frequencies of protons for magnetic resonance examinations, at least one signal is acquired and Fourier transform to a spectrum. An automated analysis of the spectrum, that has three resonance peaks, is made with at least two cross-correlation coefficients of at least one model spectrum being determined with the measured spectrum. Depending on the values of the cross-correlation coefficients, the resonance frequency is or resonance frequencies are determined.

Abstract: The embodiments relate to a method for the optimization of alignment measurements in which a MR facility is configured to a measurement object. First alignment measurements are carried out while the measurement object is being moved through the MR facility, wherein at least one MR system parameter of the MR facility is configured to the measurement object of the first alignment measurements. A second alignment measurement is also carried out in which the measurement object is stationary in a fixed position in the MR facility, wherein the second alignment measurement includes an iterative alignment method in which the at least one MR system parameter for the recording of MR signals of the measurement object is iteratively configured to the measurement object in the fixed position in the MR facility, wherein for the iterative alignment method the aligned MR system parameter is chosen from the aligned MR system parameters.

Abstract: The embodiments relate to signal selection devices for reception antennas. The signal selection device includes a plurality of signal inputs for the reception of signals from the reception antennas via an interface arrangement, and a plurality of signal outputs for the output of altered signals from the reception antennas. The signal selection device is used for selecting/reducing received signals from the reception antennas and forwarding them to an image processing device. The signal selection device contains a plurality of A/D converter chips, a plurality of digital selection chips, and at least physical and/or logical portions of a control unit. The received signals from the reception antennas are fed into the plurality of A/D converter chips via a plurality of signal inputs, are converted into digital data streams, and are supplied to the digital selection chips via signal outputs of the A/D converter chips.

Abstract: A scaling unit (1) for reception antennae (A1, A2, A3, A4) of a plurality of local coils (LS) of a magnetic resonance imaging scanner (MRT) includes a plurality of signal inputs (in1, in2, in3, in4) configured for the reception of signals from the reception antennae (A1, A2, A3, A4), and a plurality of signal outputs (out1, out2, out3, out4) configured for the output of unaltered and/or altered signals from the reception antennae (A1, A2, A3, A4).

Abstract: In a method, device and system for obtaining a medical image data set, a raw data stream is produced by a data acquisition device, the raw data stream including at least digital data of a medical raw data image set. The raw data stream is provided to a data compression device, wherein it is compressed. The compressed raw data stream is transferred to a data decompression device, wherein it is decompressed. The decompressed raw data stream is transferred to an image calculation tool, which produces a medical image data set operating on the decompressed raw data stream.