Abstract: One or more example embodiments relates to an X-ray source comprising a grid voltage unit including an interface configured to receive a control signal. The grid voltage unit is configured to regulate, via regulation of a first grid voltage at a first grid and via regulation of a second grid voltage at a second grid, a charge quantity available in a capacitor and a generator current as a function of the control signal.

Abstract: In a method for slice-specific correction of scan data recorded for at least two slices simultaneously of an examination object using an EPI-SMS technique, navigator signals encoded in a slice selection direction using a bipolar readout gradient for the at least two slices temporally after a RF excitation pulse radiated into the examination object and temporally before the recording of scan data to be corrected may be simultaneously recorded. Mean navigator signal(s) from at least two of the recorded navigator signals of a same polarity may be determined. Single-slice navigator signals may be determined based on the mean navigator signal and a navigator signal having been recorded with the same polarity as the mean navigator signal(s), but with a different slice selection encoding. Slice-specific correction data from the single-slice navigator signals may be determined, and scan data may be corrected based on the slice-specific correction data.

Abstract: A cable routing system for a computed tomography system having a gantry configured to be adjusted in a movement direction extending perpendicular to the gantry, the cable routing system comprising: a vertical column arranged on the gantry and extending vertically from a base of the computed tomography system; and a first and a second articulated arm. The first articulated arm is rotatably attached to an upper end of the vertical column above the gantry via a first point of articulation. The first articulated arm is also rotatably attached to the second articulated arm, which is also arranged above the gantry, via a second point of articulation. The vertical column and the first and the second articulated arm are configured to route at least one supply line at least in part along their respective longitudinal axes.

Abstract: One or more example embodiments of the present invention relates to a method for transmitting medical video data via a network. According to one more example embodiments, medical video data is provided via at least one of a medical imaging modality or a hospital data system. The medical video data is held in a buffer. Furthermore, a network connection is established in the network from a terminal to the buffer via a web protocol. The medical video data is transmitted from the buffer to the terminal in at least one network data stream via the network connection via the web protocol. The medical video data is displayed on a display apparatus of the terminal. One or more example embodiments of the present invention further relates to a system for transmitting medical video data and a buffer and also a terminal for such a system.

Abstract: A cable guidance system for a computed tomography system, wherein a gantry of the computed tomography system is repositionable in a direction of movement perpendicular to the gantry, the cable guidance system comprising: a vertical column arranged on the gantry and running vertically upward from a base of the computed tomography system; and a first articulated arm and a second articulated arm. The first articulated arm is rotatably connected to an upper end of the vertical column above the gantry via a first point of articulation, and rotatably connected, via a second point of articulation, to the second articulated arm which is likewise arranged above the gantry. At least one supply line runs in a repositionably guided manner along longitudinal axes of the first and second articulated arms.

Abstract: A technique for slice-specific correction of scan data recorded for at least two slices simultaneously of an examination object via an EPI-SMS is provided. The technique comprises recording slice separation reference scan data, generating scan data that is to be corrected, and recording phase-encoded navigator signals simultaneously for the at least two slices after an RF excitation pulse radiated into the examination object and before the recording of scan data to be corrected. The at least one navigator signal is recorded for each possible polarity and different phase-encoding of the navigator signals that is used. The technique further comprises separating the navigator signals simultaneously recorded for the at least two slices into single-slice navigator signals using the slice separation reference scan data, determining slice-specific correction data from the single-slice navigator signals, and correcting scan data that is to be corrected by means of the slice-specific correction data.

Abstract: A multitube X-ray emitter housing according to the invention includes a housing, a high-voltage supply and a cooling device with an electrically insulating cooling medium. The high-voltage supply has a plurality of high-voltage contacts connected in parallel on a single high-voltage supply lead. A first of at least one side surface of the housing has a first electrically conductive housing portion with a temperature-dependent electrical conductivity. The multitube X-ray emitter housing further includes: a control unit having an interface to receive a measured value representing the electrical conductivity of the first electrically conductive housing portion and to compare the measured value with a threshold value; and a switching device to switch off the high voltage based on the comparison.

Abstract: Techniques are provided for operating a magnetic resonance tomography unit. The operation includes determining a B0 field map, determining an excitation of the nuclear spins that is to be achieved, and determining a spectrally selective, generic excitation pulse for transmission by the transmitter via the antenna in dependence upon the B0 field map. The generic excitation pulse is designed to generate the excitation of the nuclear spins that is to be achieved in the patient except for local differences. The operation also comprises determining a spectrally selective, dynamic excitation pulse for transmission by the transmitter via the antenna in dependence upon the B0 field map. The excitation pulse is designed so as to compensate the local differences and thus to generate the excitation of the nuclear spins that is to be achieved in the patient, and outputting the excitation pulse via the antenna.

Abstract: In a method for processing fully sampled k-space MRI imaging data associated with a tissue of interest within a FOV, a neural network may be trained using undersampled k-space MRI imaging data associated with the tissue of interest. At least one subset of the fully sampled k-space MRI imaging data may be obtained based on an input dimension of the trained neural network such that a dimension of each one of the at least one subset is the same as the input dimension. Each one of the at least one subset of the fully sampled k-space MRI imaging data may be processed by the trained neural network, respectively. Spatial domain MRI imaging data associated with the tissue of interest within the FOV may be accordingly determined based on corresponding output of the trained neural network.

Abstract: A system and method for deformation simulation of a hollow organ able to be deformed by the introduction of a medical instrument. The method includes provision of a pre-trained machine-learning algorithm, provision of a 3D medical recording of the hollow organ with surrounding tissue, with the 3D recording having been recorded before the introduction of a medical instrument, segmentation or provision of a segmentation of the 3D medical recording of the hollow organ and establishment or provision of a three-dimensional model of the hollow organ, provision of information about a medical instrument introduced or to be introduced, and simulation of the deformation of the hollow organ to be expected from introduction of the instrument on the basis of the segmented 3D medical recording of the hollow organ and of the surrounding tissue and of the information about the instrument by using the pre-trained machine-learning algorithm.

Abstract: The disclosure relates to an X-ray tube, comprising a cathode and an anode, the cathode and anode being accommodated in a housing which provides a vacuum environment.

Abstract: The disclosure relates to techniques for triggering magnetic resonance data acquisition. The techniques include detecting a respiration direction of a respiration signal of an acquisition subject, predicting in real time an amplitude peak value of an expiration signal in the current respiration period according to the real-time respiration signal of the acquisition subject, multiplying the amplitude peak value by a preset coefficient, and using the product as a trigger point threshold of the current respiration period. When it is determined that an expiration stage of the current respiration period is starting, the techniques also include calculating in real time or periodically the absolute value of the difference between the amplitude of the current expiration signal and the trigger point threshold currently calculated, and if the absolute value of the difference is less than a preset difference threshold, then triggering MR data acquisition.

Abstract: Method for operating an MR device to acquire MR data slices, wherein in a sequence section of an MR sequence, MR signals of at least two slices are measured simultaneously, and an acquisition order having an association of slices to respective sequence sections of a repetition sequence covering all slices of an associated concatenation is determined using an ordering rule. A crosstalk criterion is evaluated for the acquisition order by checking whether a first slice acquired in a last sequence section of the repetition sequence is directly adjacent to a second slice acquired in a first sequence section of the same repetition sequence. If the crosstalk criterion is fulfilled, the acquisition order is adapted according to an adaptation rule such that a larger temporal acquisition distance between the acquisition of the first and the second slices is provided.

Abstract: In a computer-implemented method for setting a field of view for a magnetic resonance scan, exclusion information describing a region of the original field of view that is unmapped owing to the distortion is ascertained on the basis of the distortion map for at least one first set of field-of-view parameters describing a rectangular or cuboidal original field of view, the exclusion information is used to determine a second set of field-of-view parameters to be used for the magnetic resonance scan, and the magnetic resonance scan is performed using the second set of field-of-view parameters.

Abstract: A computer-implemented method provides a requested medical data record to a receiving entity. The method includes receiving a set of medical data records and receiving or initiating a joint data index and, for each medical data record of the set, applying a plurality of hash functions to a patient identifier corresponding to the medical data record to determine a hash vector, the patient identifier corresponding to the medical data record identifying the patient being subject of the medical data record, and updating the joint data index based on the hash vector. Furthermore, it includes providing the joint data index to the receiving entity and receiving a request for a record, corresponding to a request patient identifier and being based on the joint data index, from the receiving entity. The method includes providing the requested medical data record to the receiving entity via a secure communication channel.

Abstract: In a method for synchronous magnetic resonance (MR) imaging and radiation therapy using a combined system having a radiation apparatus and an MR imaging apparatus, wherein the system is designed to record MR signals of a subject during irradiation of the subject, a three-dimensional MR volume data set of the subject is acquired that contains a target volume for the irradiation, the location of a central beam of the radiation therapy apparatus relative to the subject, is continuously determined, and a second MR image data set is determined, which is positioned essentially perpendicular to the central beam. If the location of the central beam changes, a correspondingly changed second MR image data set is determined perpendicular to the central beam.

Abstract: A method is for generating an X-ray image dataset via an X-ray detector having a converter element and a multiplicity of pixel elements. In an embodiment, the method includes first counting of at least one quantity of count signals dependent upon the incident X-ray radiation in each pixel element of the multiplicity of pixel elements; second counting of at least one quantity of coincidence count signals in each pixel element of the subset of pixel elements with at least one further pixel element of the multiplicity of pixel elements; and generating an X-ray image dataset based upon the at least one quantity of count signals counted in each pixel element of the multiplicity of pixel elements and upon the at least one quantity of coincidence count signals counted in each pixel element of the subset of pixel elements.

Abstract: The present disclosure is directed to enhancing a lumen display in a CT sectional image of a blood vessel. The CT sectional image may be displayed with a first window level. An average CT value of lumen sections near the heart may be obtained, and a highest CT value of a section of a current blood vessel may also be obtained. A window level may be determined based on the average CT value and the highest CT value. At least a part of the section of the current blood vessel may then be displayed with the window level. The techniques allow for a window level to be preset to enhance lumen display and to improve the consistency of delineating the lumen contour, thereby avoiding deviations caused by subjective selection while saving time and improving patient flow.

Abstract: A motion correction method may include: calculating a current motion-corrected MR image based on a current motion parameter of an imaging target and K-space measurement data of the imaging target; calculating current motion-corrected K-space data based on the current motion parameter of the imaging target and the current motion-corrected MR image; calculating a current K-space measurement data error based on the K-space measurement data of the imaging target and the current motion-corrected K-space data; and determining, based on the current K-space measurement data error, whether an iteration end condition is met. If so, using the current motion-corrected MR image as a final motion-corrected MR image to be used. Otherwise, updating the current motion parameter of the imaging target based on the current K-space measurement data error and the current motion-corrected MR image. The method advantageously provides an increased motion correction speed of an MR image.