Abstract: In a method and apparatus for recording magnetic resonance (MR) signals from an examination object, raw data space is filled with MR signals in raw data lines. Movement information of the examination object is detected during recording of the MR signals and the movement information is grouped into different movement phases of the examination object. A temporally randomly distributed sequence of the recording of the raw data lines is determined, with which at least one predetermined portion of the raw data space is filled MR signals. The MR signals are acquired in the determined temporally randomly distributed sequence of the raw data lines in the predetermined portion. Each recorded raw data line is allocated to one of the movement phases of the examination object.

Abstract: In a method and apparatus for recording magnetic resonance (MR) signals from an examination object, raw data space is filled with MR signals in raw data lines. Movement information of the examination object is detected during recording of the MR signals and the movement information is grouped into different movement phases of the examination object. A temporally randomly distributed sequence of the recording of the raw data lines is determined, with which at least one predetermined portion of the raw data space is filled MR signals. The MR signals are acquired in the determined temporally randomly distributed sequence of the raw data lines in the predetermined portion. Each recorded raw data line is allocated to one of the movement phases of the examination object.

Abstract: A magnetic resonance (MR) image is created by executing an imaging sequence with an MR apparatus, wherein data in k-space are acquired using multiple receiving antennae, and reconstruction of all image points that correspond to all k-space points belonging to the imaging sequence takes place using a sensitivity profile of the receiving antennae in order to also take account of data at k-space points at positions at which no data were acquired. Data acquired at a number of positions of particular k-space points, the number of the particular k-space points being smaller than the number of all k-space points belonging to the imaging sequence. The aperture of each of the receiving antennae is configured such that, for acquisition of data at a respective k-space point, the spectral main lobe of the respective receiving antenna also extends over k-space points adjacent to the respective k-space point.

Abstract: An assembly for thermal insulation of an MR magnet system during such a transport has a container for accommodating an MR magnet, the container being equipped with thermal insulation, and the container has an opening for accommodating a cooling unit. The assembly further has a protective cap, such that the opening is sealed in a reversible manner by the protective cap, and the protective cap is likewise equipped with thermal insulation.

Abstract: A method is described for the wireless signal transmission of a measurement signal and/or a control signal between two functional components of a MR system. The measurement signal and/or the control signal is encoded into a RF transmit signal with a predefined orbital angular momentum and this RF transmit signal is transmitted between transmit antenna arrangements of the functional components. In addition, the embodiments relate to a local coil and an orbital angular momentum transmit unit with which the method may be carried out, and also a MR system that has a local coil and an orbital angular momentum transmit unit of this type.

Abstract: In a method and system for the multisensory representation of an object, multidimensional digital model data of the object are provided to a processor. An actual three-dimensional object model is produced on the basis of at least part of the multidimensional digital model data of the object. The position of the object is recorded subsequently. At least part of the multidimensional digital model data of the object is displayed by an AR display device depending on the position of the object model.

Abstract: The invention relates to a device for contact-free control of a patient table includes a camera system for detecting at least one gesture of a user of the device, a processing unit for converting the at least one detected gesture into at least one command for controlling the patient table, and an execution unit for executing the at least one command for controlling the patient table. The device can furthermore include a monitoring system for monitoring the control of the patient table and an authentication system for authenticating the user.

Abstract: In a method and apparatus to quickly determine regions of modified temperature in a sample volume by magnetic resonance tomography using a multi-echo sequence, one or more one-dimensional or two-dimensional images of regions of modified temperature are respectively determined.

Abstract: Described is a local coil having a number of magnetic resonance antenna elements, a, strip-shaped, metamaterial signal conductor, and an adapter device for coupling signals into the metamaterial signal conductor and/or coupling signals out of the metamaterial signal conductor. Additionally described is a magnetic resonance system having a local coil communication interface and an adapter device for coupling signals out of a metamaterial signal conductor and transferring them to the local coil communication interface and/or for coupling signals from the local coil communication interface into a metamaterial signal conductor, and a method for transmitting signals between a local coil and a local coil communication interface of a magnetic resonance system.

Abstract: In a method to control a medical apparatus of an installation having: a contact device for a patient, at least one electrical potential sensor that can be coupled to the body of said patient is integrated into the contact device. A signal evaluation device is provided with measurement signals generated with the electrical potential sensor for evaluation. The medical apparatus is connected with the signal evaluation device, and measurement signals that relate to the breathing and/or cardiac activity of the patient are acquired with the at least one electrical potential sensor coupled to the body of said patient upon contact of the patient with the contact device. Trigger signals are generated with the signal evaluation device based on the measurement signals that relate to the breathing cycle and/or the cardiac cycle of the patient. Operation of the medical apparatus is controlled based on the trigger signals.

Abstract: A method for dual-energy spectra CT scanning and image reconstruction of two tomographic image datasets from a higher-energy and a lower-energy x-ray energy spectrum is disclosed. In at least one embodiment, readings are taken with the different x-ray energy spectra during the scanning; the different x-ray energy spectra are also created at least by different acceleration voltages of the x-ray source; and the spatial distribution of the scanning x-rays per x-ray energy spectrum is undertaken randomly or pseudo-randomly (in the absence of a regular pattern). With the attenuation datasets thus obtained, reconstructions of two tomographic image datasets in accordance with a least one iterative CS reconstruction method are carried out and subsequently the reconstructed tomographic image datasets are stored and/or output and/or further processed.

Abstract: In order to detect a magnetic resonance (MR) signal in an examination region of an examination subject in a measurement field of an MR system with an MR imaging sequence, a magnetization in the examination subject is generated with a polarization field B0. The MR system has a magnet to generate the polarization field B0 with a first field inhomogeneity across the measurement field. At least one RF pulse is radiated into the examination region. At least one first magnetic field gradient is activated for spatial coding of the MR signal. At least one pulsed compensation magnetic field gradient is activated that is generated by a temporally variable current that varies over the duration of the MR imaging sequence and that is activated over a compensation time period that is shorter than the total duration of the imaging sequence so that, during the compensation time period, the first field inhomogeneity is reduced to a second, lower field inhomogeneity across the measurement field.

Abstract: In a method, a computer-readable storage medium and a magnetic resonance apparatus for processing image data of the magnetic resonance apparatus, a representation of the degree of image blurring in magnetic resonance data that results from the acquisition of the data with view angle tilting is provided as an input to a processor. The processor calculates a convolution kernel from the input that mathematically relates the degree of blurring to the acquired data. The convolution kernel is applied either to the acquired data before reconstruction of an image therefrom or to the reconstructed image data, so that the resulting image is deblurred.

Abstract: In a methods for elastography in a defined region of an examined person, a radio-frequency pulse is radiated to manipulate a transverse magnetization in the defined region and at least one additional radio-frequency pulse with a spatial selectivity of the amplitude is radiated to generate shear waves in the defined region. A magnetic resonance signal from the defined region is detected and a determination of a value describing the tissue elasticity in the defined region is made based on the magnetic resonance signal.

Abstract: In a method, a magnetic resonance system, and a computer-readable storage medium to generate magnetic resonance measurement data of an imaging area of an examination subject, the imaging area being located in a measurement volume of the magnetic resonance system, by operation of the magnetic resonance system, during the acquisition of the magnetic resonance measurement data, at least one additional nonlinear gradient is switched in addition to the gradients for spatial coding, and k-space is read out according to a random pattern, less densely than is required by the Nyquist condition.

Abstract: In a method and magnetic resonance apparatus for determining absolute three-dimensional reception sensitivity maps for reception coils in a scanner of the magnetic resonance, in particular a scanner having a basic magnetic field strength of at least 3 T, in the presence of a subject under examination that affects the reception sensitivity, spatially resolved subject parameters are determined, which specify electromagnetic properties of the subject under examination, and coil-geometry parameters are determined, which specify the spatial arrangement of the reception coils in the magnetic resonance scanner. The reception sensitivity maps are determined by simulation in a model specified by the subject parameters and the coil-geometry parameters.

Abstract: In a method and magnetic resonance apparatus for creating an optimizing pulse sequence for selective RF excitation in the magnetic resonance apparatus, the pulse sequence has an excitation event block, which has an RF pulse and a selection gradient. Nuclear spins are excited in a predefined volume section in a predetermined manner by this excitation event block, which is designed to so that the spins inside the volume section have the same phase position after the excitation event block of the pulse sequence. The selection gradient does not have a polarity reversal.

Abstract: A receive apparatus in a strong magnetic alternating field is disposed in a magnetic resonance tomography (MRT) system. The MRT system includes at least one receive apparatus for a magnetic resonance high frequency (MR-HF) signal. The receive apparatus includes a receive coil element for receiving the MR-HF signal, an optical modulator, in which an electrical control input is coupled to the receive coil element, and an optical output for outputting an output signal of the modulator. The optical modulator forms an optical demodulation device for the MR-HF signal. The optical modulator is coupled to a laser light source via an optical input that is configured to generate a laser light. A light intensity of the laser light varies periodically with a predetermined frequency.

Abstract: The embodiments relate to methods and an apparatus for measuring a magnetic field in a magnetic resonance tomography device with at least one field probe, wherein at least one generated delete signal may be applied to reduce a residual magnetization in the at least one field probe.

Abstract: In a method and apparatus for communication between a control unit of a medical imaging device, the control unit being arranged within a control room, and an operator located in an examination room examination and/or a patient located in the examination room and positioned on a patient support device, wherein the control room is arranged outside of the examination room, object data of objects positioned on the patient support device and/or of the operator are acquired by an object data acquisition unit, the acquired object data are transferred from the object data acquisition unit to the control unit, information of the objects positioned on the patient support device and/or the operator is determined by the control unit using the acquired object data, and output information is generated using the determined information and the output information is presented within the examination room.