Abstract: The present disclosure describes a conveyor sensor unit which enables position determination of at least one shuttle of the transport system across different types of conveyors. The at least one shuttle is handed over from an effective area of the conveyor unit to a magnetic effective area of an electromagnetic transport unit or vice versa. During handing over the at least one shuttle, the at least one shuttle is temporarily in the effective area of the conveyor unit and in the magnetic effective area of the electromagnetic transport unit, wherein the position of the at least one shuttle is determined by the conveyor sensor unit or by the electromagnetic transport unit. When the at least one shuttle is just in the effective area of the conveyor unit, the position of the at least one shuttle in the effective area of the conveyor unit is determined by the conveyor sensor unit.

Abstract: A linear motor and method for operating a linear motor are disclosed. The linear motor comprises a stator and a shuttle. Cogging forces in at least one direction of movement of the shuttle along the stator are determined as a function of the relative position of the shuttle with respect to the stator in the at least one direction of movement and while the drive coils in the region of the shuttle are non-energized. The determined cogging forces are stored in a control unit. The stored cogging forces are used by the control unit to compensate the cogging forces during operation of the linear motor in dependence of the relative position between a shuttle for which the cogging forces are compensated and the stator.

Abstract: A plurality of k filtered objects is calculated by filtering an n-dimensional data object of a metrological investigation received from a data source with k filter functions, wherein each filter function, in the space of the data object, is missing at least one of the n dimensions of the data object such that none of the n dimensions of the data object is missing in all filter functions. The k filtered objects are transformed by an invertible integral transformation into k transformed filtered objects followed by point-wise weighting of each of the k transformed filtered objects with a respective weight function resulting in k weighted transformed filtered objects. The k weighted transformed filtered objects are combined into a combined transformed filtered object, which is transformed by applying the inverse of the invertible integral transformation, into a weighted-filtered n-dimensional data object.

Abstract: In order to allow flexible operation of a machine with a transport device having a linear motor, it is provided, that at least one excitation magnet is provided on a movable part of the machine, and that at least one of the plurality of drive coils is used as excitation coil that is energized with an excitation coil voltage for generating an alternating excitation electromagnetic field in the vicinity of the excitation coil, wherein the excitation electromagnetic field interacts with the excitation magnet for producing mechanical vibrations of the movable part of the machine, wherein said mechanical vibrations cause a sound that is used for the operation of the machine.

Abstract: The invention relates to a method for generating a series of magnetic resonance images from an MR bin series obtained by means of an MRI measurement, wherein the MR bin series comprises a plurality of bin frames (f1, f2, f3) with determined MR data, wherein at least one bin frame is undersampled, i.e.

Abstract: In order to specify a method for the standstill control of a drive body on which a friction force acts, by means of which a controlled reduction in undesirably stored potential energy is possible, an activation manipulated variable is specified which changes a setting manipulated variable which does not overcome the friction force to a relaxation manipulated variable, and the relaxation manipulated variable is converted by an actuator into a relaxation drive force acting on the drive body, wherein the activation manipulated variable is specified in such a way that the relaxation drive force overcomes the friction force, acting on the drive body, at least temporarily during the standstill control.

Abstract: A method for generating a magnetic resonance image includes providing MR segment data records, wherein each MR segment data record has N×M frequency voxels in k-space. To reduce the acquisition time during MR segment recordings, the amount of MR data is reduced by incompletely sampling the k-space during a recording. The missing data of the MR segment data records are reconstructed twice: Preliminarily reconstructed MR segment data records are calculated first, with a reconstruction kernel obtained from reference data. Modified reference images containing phase information are obtained by creating phase images from the preliminarily reconstructed MR segment data records and combining these phase images with the absolute value of the reference image generated from the reference data. The second reconstruction kernels are ascertained therefrom in turn. In contrast to the first reconstruction kernel, these contain phase information, such that the missing data can be reconstructed without phase artifacts.

Abstract: A method for generating a magnetic resonance image includes providing MR segment data records, wherein each MR segment data record has N×M frequency voxels in k-space. To reduce the acquisition time during MR segment recordings, the amount of MR data is reduced by incompletely sampling the k-space during a recording. The missing data of the MR segment data records are reconstructed twice: Preliminarily reconstructed MR segment data records are calculated first, with a reconstruction kernel obtained from reference data. Modified reference images containing phase information are obtained by creating phase images from the preliminarily reconstructed MR segment data records and combining these phase images with the absolute value of the reference image generated from the reference data. The second reconstruction kernels are ascertained therefrom in turn. In contrast to the first reconstruction kernel, these contain phase information, such that the missing data can be reconstructed without phase artifacts.

Abstract: A method for establishing and/or reducing artifacts that arise when reconstructing (R) an MPI overall image data record from MPI signal data and an appended system matrix (SMapp(r,f)), wherein the appended system matrix (SMapp(r,f)) includes system matrices of different particle classes (P1, P2). The method includes setting a selection region (cvn(r)) of a reconstructed MPI overall image data record (cn(r)), producing virtual signal data (sn(f)) by inverse transformation of the selection region, reconstructing a virtual overall image data record (c?vn(r)) from the virtual signal data and the appended system matrix, setting an artifact region (cartifact_n(r)) within the reconstructed virtual overall image data record so that the artifact region has only voxels lying outside of the selection region, and assigning the image data present in the artifact region as artifact image data (cartifact_n(r)). This permits ghost artifacts to be corrected.

Abstract: A method for establishing a local concentration distribution of magnetic particles of at least one particle class within an examination volume or a variable derived from this concentration distribution. The method includes providing at least one system matrix, providing MPI signal data of at least one sample including magnetic particles of at least one particle class within a measurement volume, and reconstructing spatially resolved MPI image data from the provided MPI signal data. At least one spatial projection of at least one part of the system matrix is carried out along a projection direction and a projected system matrix is generated thereby. The reconstruction of the MPI image data is implemented with the at least partly projected system matrix, as a result of which MPI image data of a spatial projection of the local concentration distribution of the magnetic particles are produced along the projection direction.

Abstract: The systems, methods, and devices described herein generally relate to achieving accurate and robust motion correction by detecting and accounting for false movements in motion correction systems used in conjunction with medical imaging and/or therapeutic systems. In other words, in some embodiments of the systems, methods, and devices described herein can be configured to detect false movements for motion correction during a medical imaging scan and/or therapeutic procedure, and thereby ensure that such false movements are not accounted for in the motion correction process. Upon detection of false movements, the imaging or therapeutic system can be configured to transiently suppress and/or subsequently repeat acquisitions.

Abstract: A method for establishing and/or reducing artifacts that arise when reconstructing (R) an MPI overall image data record from MPI signal data and an appended system matrix (SMapp(r,f)), wherein the appended system matrix (SMapp(r,f)) includes system matrices of different particle classes (P1, P2). The method includes setting a selection region (cvn(r)) of a reconstructed MPI overall image data record (cn(r)),producing virtual signal data (sn(f)) by inverse transformation of the selection region, reconstructing a virtual overall image data record (c?vn(r)) from the virtual signal data and the appended system matrix, setting an artifact region (cartifact_n(r)) within the reconstructed virtual overall image data record so that the artifact region has only voxels lying outside of the selection region, and assigning the image data present in the artifact region as artifact image data (Cartifact_n(r)). This permits ghost artifacts to be corrected.

Abstract: A method for establishing a local concentration distribution of magnetic particles of at least one particle class within an examination volume or a variable derived from this concentration distribution. The method includes providing at least one system matrix, providing MPI signal data of at least one sample including magnetic particles of at least one particle class within a measurement volume, and reconstructing spatially resolved MPI image data from the provided MPI signal data. At least one spatial projection of at least one part of the system matrix is carried out along a projection direction and a projected system matrix is generated thereby. The reconstruction of the MPI image data is implemented with the at least partly projected system matrix, as a result of which MPI image data of a spatial projection of the local concentration distribution of the magnetic particles are produced along the projection direction.

Abstract: The systems, methods, and devices described herein generally relate to achieving accurate and robust motion correction by detecting and accounting for false movements in motion correction systems used in conjunction with medical imaging and/or therapeutic systems. In other words, in some embodiments of the systems, methods, and devices described herein can be configured to detect false movements for motion correction during a medical imaging scan and/or therapeutic procedure, and thereby ensure that such false movements are not accounted for in the motion correction process. Upon detection of false movements, the imaging or therapeutic system can be configured to transiently suppress and/or subsequently repeat acquisitions.

Abstract: The systems, methods, and devices described herein generally relate to achieving accurate and robust motion correction by detecting and accounting for false movements in motion correction systems used in conjunction with medical imaging and/or therapeutic systems. In other words, in some embodiments of the systems, methods, and devices described herein can be configured to detect false movements for motion correction during a medical imaging scan and/or therapeutic procedure, and thereby ensure that such false movements are not accounted for in the motion correction process. Upon detection of false movements, the imaging or therapeutic system can be configured to transiently suppress and/or subsequently repeat acquisitions.

Abstract: The systems, methods, and devices described herein generally relate to achieving accurate and robust motion correction by detecting and accounting for false movements in motion correction systems used in conjunction with medical imaging and/or therapeutic systems. In other words, in some embodiments of the systems, methods, and devices described herein can be configured to detect false movements for motion correction during a medical imaging scan and/or therapeutic procedure, and thereby ensure that such false movements are not accounted for in the motion correction process. Upon detection of false movements, the imaging or therapeutic system can be configured to transiently suppress and/or subsequently repeat acquisitions.

Abstract: A method of MR imaging and spectroscopy to reduce artifacts occurring due to the motion of an object to be represented, wherein the object position is determined quasi-continuously during the runtime of the MR acquisition, which includes one or more partial acquisitions (TA), and wherein motion correction is performed, which comprises dynamic adaptation of the frequency and phase settings of the RF system of the tomograph and of the orientation and amplitudes of the gradients during the runtime of the MR acquisition according to the current object position. The motion correction is thereby applied during a signal weighting period, during a signal read-out period, or between and/or during the two stated periods and the adaptations for motion correction are performed without interrupting or slowing the temporal progression of the MR acquisition. In this way, artifacts due to motion of the object to be represented can be further reduced.

Abstract: A method of MR imaging and spectroscopy reduces artifacts occurring due to the motion of an object to be represented, wherein the object position is determined quasi-continuously during the runtime of the MR acquisition, which includes one or more partial acquisitions (TA), and wherein motion correction is performed, which comprises dynamic adaptation of the frequency and phase settings of the RF system of the tomograph and of the orientation and amplitudes of the gradients during the runtime of the MR acquisition according to the current object position. The motion correction is thereby applied during a signal weighting period, during a signal read-out period, or between and/or during the two stated periods and the adaptations for motion correction are performed without interrupting or slowing the temporal progression of the MR acquisition. In this way, artifacts due to motion of the object to be represented can be further reduced.