Abstract: A coil facility for a magnetic resonance installation and a magnetic resonance installation having such a coil facility are provided. The coil facility in this case includes a double-resonant transmit resonator for two frequencies and a first receiver and a second receiver, each for one of the two frequencies. The coil facility has an actuator system for effecting a relative spatial transposition of the transmit resonator, the first receiver, and the second receiver into various settings. In a first setting, only the first receiver, and in a second setting, only the second receiver, for receiving corresponding MR signals is arranged in an examination space that is at least sectionally surrounded by the transmit resonator.

Abstract: A tissue type fraction within a biological object is determined by a phase-cycled acquisition of several images of the object and deriving a complex signal profile for each voxel of the acquired images; generating a multidimensional dictionary of simulated signal profiles, wherein each simulated signal profile is configured for simulating the previously derived complex signal profile; using a weight optimization algorithm configured for expressing the complex signal profile as a weighted sum of the simulated signal profiles, wherein the weight optimization algorithm provides as output for each voxel a matrix M of optimized weights; for each voxel and each dimension of the obtained matrix M, extracting from the matrix M a distribution of the obtained optimized weights; and determining a type of tissue composing each voxel from the obtained distributions.

Abstract: A method for providing an item of conversion information describing an allocation rule of at least one physical property value of a material in a voxel relating to an image value of the voxel in a three-dimensional image dataset recorded with an X-ray apparatus is provided. By scanning a phantom including at least one calibration material in the X-ray apparatus, a calibration database that is used for determining the allocation rule is determined. The image dataset is recorded with a receiving spectrum geared to an X-ray detector of the X-ray apparatus. The receiving spectrum is described by at least one spectral parameter. For determining the allocation rule dependent upon the spectral parameter, calibration data derived from the measured calibration dataset describing different receiving spectra is used.

Abstract: A magnetic resonance tomography system can include a basic field magnet arrangement configured to generate a basic magnetic field (B0), and spatially separated measurement stations (M1, M2, M3, M4, M5, M6, N5, M6, Mp, Ms). The magnetic resonance tomography system can use the intended basic magnetic field (B0) collectively for the measurement stations.

Abstract: A method is for obtaining at least one feature of interest, especially a biomarker, from an input image acquired by a medical imaging device. The at least one feature of interest is the output of a respective node of a machine learning network, in particular a deep learning network. The machine learning network processes at least part of the input image as input data. The used machine learning network is trained by machine learning using at least one constraint for the output of at least one inner node of the machine learning network during the machine learning.

Abstract: A local coil for a magnetic resonance tomograph includes a transmitting antenna for emitting a pilot tone, and a receiving antenna for receiving the pilot tone. The local coil also has a decoupling device for decoupling the receiving antenna from the transmitting antenna.

Abstract: A method and a device are for detecting an anatomical feature of a section of a blood vessel. In an embodiment, the device includes a first interface embodied to receive a medical image data record, including a region of an anatomy of a patient to be examined, which has the section of a blood vessel; a first computing unit, embodied to apply a first algorithm pretrained on an anatomical feature for detecting the anatomical feature based upon the medical image data record; and a second interface embodied to provide an item of information based upon the detection of the anatomical feature. The anatomical feature includes a change in caliber of a blood vessel. Further, the presence of the anatomical feature is indicative of vascular pulmonary disease, in particular of chronic thromboembolic pulmonary hypertension.

Abstract: Techniques are described for acquiring MR data comprising first MR data and second MR data of an examination object using an MR control sequence and a magnetic resonance device comprising an amplifier unit and an analog-to-digital converter (ADC).

Abstract: A magnetic resonance (MR) apparatus may include a patient ventilator, a cooler, and at least one electronic component. The patient ventilator may include at least one airflow generator configured to generate an airflow and at least one ventilation duct. The cooler may be configured to cool the at least one electronic component. The cooler may include at least one cooling element coupled to the patient ventilator.

Abstract: A magnetic resonance imaging device includes at least one magnetic shielding element, an electrical component and a coil arrangement including at least two coil rings. In an embodiment, the coil rings are arranged offset along a longitudinal direction of a patient receptacle and the coil arrangement is embodied to form a magnetic field in an inner volume surrounded partially by the coil rings and at least partially including the patient receptacle. Further, in an embodiment, the shielding element and the electrical component outside of the inner volume are arranged in the longitudinal direction centrally between the coil rings and the shielding element shields the electrical component from the magnetic field outside of the inner volume.

Abstract: A method is provided for operating a medical X-ray device when carrying out an X-ray examination. In order to reduce the duration of the scan for the reliable determination of changes over time in a body region of an examination subject by an X-ray based subtraction method, the method includes recording a plurality of first X-ray images of a body region of an examination subject, wherein the recording of the plurality of first X-ray images ensues at a constant X-ray imaging frequency and a constant X-ray dose for each X-ray image recording.

Abstract: A system and a method monitor a biological process. The method includes obtaining an abnormal tissue mask from an abnormal tissue segmentation of an image of an object containing tissue to be analyzed, the image being acquired at a time t0 being a reference time point. Other images of the object are registered onto the abnormal tissue mask, the other images being acquired at other time points. Image contrasts of the other images are normalized with respect to the contrasts of the image acquired at the reference time point. The normalized images are subtracted for each available contrast in order to obtain difference images. A joint difference image is created by summing the previously obtained difference images. A biological process progression map is created by overlapping the abnormal tissue mask obtained and the joint difference image after applying a pre-defined threshold.

Abstract: A method of generating biomarker parameters includes acquiring imaging data depicting a patient using a MRI system. The imaging data is acquired for a plurality of contrasts resulting from application of a pulse on the patient's anatomy. A process is executed to generate a MoCoAve image for each contrast. This process includes dividing the imaging data for the contrast into bins corresponding to one of a plurality of respiratory motion phases, and reconstructing the imaging data in each bin to yield bin images. The process further includes selecting a reference bin image from the bin images, and warping the bin images based on the reference bin image. The warped bin images and the reference bin image are averaged to generate the MoCoAve image for the contrast. One or more biomarker parameter maps are calculated based on the MoCoAve images generated for the contrasts.

Abstract: A patient support device including a patient support board including of at least two board sections, wherein at least one of the at least two board sections may be pivoted with respect to another of the board sections around a pivot axis by a pivoting mechanism. The pivoting mechanism includes two ratchets that may be latched in mutually opposite directions of rotation around the pivot axis and at least one operator control device. At least one of the two ratchets may be moved from a latched state into an open state and/or vice versa by the at least one operator control device.

Abstract: A registration facility and a registration method are provided where a pre-interventionally generated simulation model of an examination object is registered with an intra-interventional live image. The simulation model is adapted to the live image using at least one simulated course line of an anatomical feature and/or an instrument by minimizing a line distance metric, specified as a cost function, for a distance between the simulated course line and an actual intra-interventional course of the instrument that is visible in the live image.

Abstract: A trained recurrent neural network having a set of control policies learned from application of a template dataset and one or more corresponding template deep network architectures may generate a deep network architecture for performing a task on an application dataset. The template deep network architectures may have an established level or performance in executing the task. A deep network based on the deep network architecture may trained to perform the task on the application dataset. The control policies of the recurrent neural network may be updated based on the performance of the trained deep network.

Abstract: In a method and apparatus for recording a magnetic resonance (MR) data record using multiple reception coils, the data of the MR data record contain measurement signals of at least two image data records respectively from at least two slices. The MR data record is acquired in a sequence having an excitation phase, an evolution phase, readout of a first echo signal while a first read gradient is being applied, application of at least one shift gradient in a slice-selection direction, and readout of at least one further echo signal while a further read gradient is applied. The shift gradient is positioned so as to cause a shift of at least one further image data record generated from the further echo signal or signals relative to the first image data record generated from first echo signals.

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: A method is for closed-loop control of an X-ray pulse chain generated via a linear accelerator system. In an embodiment, the method includes modulating a first electron beam within a first radio-frequency pulse duration, wherein the first multiple amplitude X-ray pulse is produced on modulating the first electron beam; measuring time-resolved actual values of the first multiple amplitude X-ray pulse; adjusting at least one pulse parameter as a function of a comparison of the specified multiple amplitude X-ray pulse profile and the measured time-resolved actual values; and modulating a second electron beam within a second radio-frequency pulse duration as a function of the at least one adjusted pulse parameter for production of the second multiple amplitude X-ray pulse, so the X-ray pulse chain is controlled.

Abstract: An interference signal compensation facility in a differential voltage measuring system including a signal measuring circuit for measuring bioelectric signals with a number of useful signal paths, each with a capacitive sensor electrode for the acquisition of a measurement signal, is described. The interference signal compensation facility includes at least one capacitive reference electrode, set up to acquire a reference signal which possibly includes an interference signal generated by an external interference source. Furthermore, the interference signal compensation facility includes an echo compensation unit, set up to filter the measurement signal based upon the capacitively acquired reference signal and to determine an interference-compensated measurement signal. A differential voltage measuring system is also described. Moreover, an X-ray imaging system is described. In addition, a method for generating an interference-reduced biological measurement signal is described.