COMPUTER SYSTEM AND METHOD FOR IMAGE PROCESSING

A computer system for image processing has a first working environment with a first program for image processing, as well as a second working environment, logically separated from the first working environment, with a second program for image processing. The first working environment is implemented on a first server. Furthermore, the first working environment is designed to receive a first command to execute the first program and a second command to execute the second program, and to send the second command to the second working environment. The second working environment is designed to send an image processed by the second program to the first working environment . The communication of a user with the first and second program thus occurs via a uniform platform in the form of the first working environment, and the integration of the second program for image processing into the workflow is facilitated. 1. A computer system for image processing , comprising:a server configured to form a first working environment, comprising a first program for image processing, and to form a second working environment, logically separated from the first working environment, comprising a second program for image processing;said first server being configured to receive a first command to execute the first program, and to receive a second command to execute the second program, and to send the second command to the second working environment; andsaid server in said second working environment being configured to send an image processed by the second program to the first working environment.2. A computer system as claimed in comprising a client of said server claim 1 , said client comprising a user interface configured to send the first command and the second command to the first working environment.3. A computer system as claimed in wherein said server is configured in said first working environment to send an image processed by the first program claim 2 , and the image processed by the ...

Method for operating a magnetic resonance tomography apparatus

In a method for operating a magnetic resonance tomography system having a shim coil arrangement and a gradient coil arrangement, in which, in order to generate an image dataset of a region of an examination subject to be imaged, at least the region that is to be imaged is borne in an imaging volume of the system, an initial shim adjustment procedure is carried out, a change (if it occurs) in the position of the imaged region in relation to the imaging volume is detected, and a current in the shim coil arrangement is modified dependent on the detected position change.

Method for motion correction in a series of images of a rigid body

The invention is directed to a method for motion correction given series of two-dimensional images of a rigid body, whereby the rigid body does not lie completely in the coverage area of the images and is cut off at one image edge or, respectively, at two image edges that do not lie opposite one another. Given two time-successive images, the mirror image or, respectively, the mirror images of the other are respectively attached to the one. A simple motion correction method is then implemented between the two newly arisen images that now show an approximately rigid body that lies completely within the coverage area of these newly arisen images.

DEVICE AND METHOD TO GENERATE X-RAY RADIATION WITH TWO SPECTRA

In a device, a method and a computer-readable storage medium encoded with programming instructions to generate x-ray radiation to examine a subject with at least two spectra respectively of x-ray radiation of different average photon energies, an x-ray tube is used that has at least two foci that are different from one another, and the device is operated to switch between the foci in order to generate x-ray radiation. A spectrum of x-ray radiation respectively emanates from each focus. A filter is associated with the x-ray tube such that the spectrum of x-ray radiation emanating from one of the foci is not filtered by the filter and the spectrum of x-ray radiation emanating from another of the foci is filtered by the filter, such that the average photon energy of the filtered spectrum of x-ray radiation is higher than the average photon energy of the unfiltered spectrum of x-ray radiation.

Method and magnetic resonance tomography apparatus for correcting changes in the basic magnetic field

In the examination of a subject with a magnetic resonance tomography apparatus, data for a slice of the subject to be examined are obtained with a sequence of a fast MRT imaging method that includes at least three phase correction scans and measurement signals of the respective phase correction scans as well as of the slice are obtained. The phase difference of corresponding data points of two phase correction scans are calculated point-by-point, the average phase difference between the phase correction scans is evaluated, and the frequency offset between the actual resonance frequency relative to the adjusted resonance frequency is calculated based on the average phase difference and the echo time difference between the phase correction scans used. A B0 field map is calculated dependent on the frequency offset and, the measurement data for the slice are corrected using the calculated B0 field map.

Method for rotating image records with non-isotropic topical resolution

A method for rotating at least two-dimensional image records with non-isotropic topical resolution, in which a rotation of an image record is described using a rotation matrix; the rotation matrix is represented as a product of at least two shear matrices, each having exactly one element that is dependent on the angle of rotation, while their remaining elements are exclusively ones and zeroes; the matrix element, which is dependent on the angle of rotation, of at least one shear matrix is multiplied by a factor; and the rotation of the image record is carried out in Fourier space without interpolations and without forming an isotropic auxiliary record, by exploiting the displacement set of the Fourier transformation by implementing the shear matrices as displacements of line elements of the image record.

MEDICAL IMAGE ACQUISITION APPARATUS AND OPERATING METHOD THEREFOR

In a medical image acquisition device, and a method for operating such a device, before acquiring a current planning image data set from a subject, a statistical atlas is generated that is a statistical compilation concerning at least one part of the human body, the statistical compilation including an average image data set electronically associated, in the statistical atlas, with association information that identifies anatomy of the human body represented by the statistical compilation. The statistical atlas is compiled from multiple planning image data sets acquired using a specific measurement protocol. After the current planning image data set is acquired, the stored average image data set is transformed into the current planning image data set, so that the association information associated with the average image data set are accurately also associated with the current planning image data set. A diagnostic image acquisition of the subject is then controlled using the association ...

System and Method for Lesion Segmentation in Whole Body Magnetic Resonance Images

A method for lesion segmentation in 3-dimensional (3D) digital images, includes selecting a 2D region of interest (ROI) from a 3D image, the ROI containing a suspected lesion, extending borders of the ROI to 3D forming a volume of interest (VOI), where voxels on the borders of the VOI are initialized as background voxels and voxels in an interior of the VOI are initialized as foreground voxels, propagating a foreground and background voxel competition where for each voxel in the VOI, having each neighbor voxel in a neighborhood of the voxel attack the voxel, and, if the attack is successful, updating a label and strength of the voxel with that of the successful attacking voxel, and evolving a surface between the foreground and background voxels in 3D until an energy functional associated with the surface converges in value, where the surface segments the suspected lesion from the image.

Method and device for fast processing of measurement data with a plurality of independent random samples

In a method as well as a device to process measurement data that are composed of a number of data sets with a number of independent random samples originating via temporally successive measurements, for a comparison of the time curve of each acquired random sample with the time curve of a model function using the general linear model, the required calculations are implemented data set-by-data set in a series of the data sets originating from the temporal sequence of measurements, and stored as an intermediate result, with the intermediate results of the directly preceding data set being updated with the new calculations. The comparison can be calculated efficiently and quickly, with a saving of storage space.

Method for segmenting structures in image data records and image processing unit for carrying out the method

In the method according to at least one embodiment of the invention, a first segmentation of a structure in an image data record is firstly carried out, and a first final segmentation result is obtained therefrom. A region in the image data record is selected based on the first final segmentation result obtained. A first band is placed at a first, outwardly pointing distance from the selected region. This first band characterizes a background region. A second band is placed at a second, inwardly pointing distance from the projected first final segmentation result of the first segmentation. This second band characterizes a structure region. A further segmentation is carried out based on the characterized background region and the characterized structure region, and the final segmentation result of the further segmentation is saved and/or displayed. Furthermore, an image processing unit for carrying out the method is disclosed.

Computerized method and apparatus for iterative calculation of the general linear model using only substantially orthogonal model functions

In a method and apparatus for incremental calculation of a general linear model given intermittent correlation of the model functions, data composed of a number of data sets with a number of different random samples are processed. For each independent random sample contained in the data set, a dependency on an order quantity is compared with the dependency on the order quantity in model functions contained in a model matrix G using the general linear model in order to check the occurrence of specific characteristics in the dependency of the random sample on the order quantity. The calculation of the general linear model ensues incrementally from data set to data set. Before the calculations for the data of a data set, a check is made as to whether the model functions contained in the model matrix G exhibit orthogonal portions to a sufficient degree in a segment (represented by the data set) of the dependency on the order quantity for the calculations. Given a degree of parallelism that is too high, one or more model functions of the model matrix G that interfere with the orthogonality are masked out to a predeterminable degree in the calculations for this data set, in order to achieve the sufficient degree of orthogonal portions. An incremental calculation of the general linear model with corresponding output of intermediate results is thereby enabled, even given the presence of intermittent correlating model functions in the model matrix.

Method for the operation of a magnetic resonance apparatus

In a method for the operation of a magnetic resonance apparatus, nuclear magnetic signals obtained from an image region of an examination subject that is positioned in an imaging volume of the apparatus are entered into a k-space matrix as respective complex numbers are a motion model is determined with which translational motion of the subject with respect to the imaging volume can be described with a time-dependency, at least for prescribable points of the image region. The motion model is determined with respective phase values of at least two values of the k-space matrix that are point-symmetrically located in the k-space matrix with respect to a symmetry point of the k-space matrix. These two values behave as complex conjugates of each other in the absence of any motion between the registration times of the two values, and, any translational motion is thus reflected in the phase values. The values of the k-space matrix are corrected according to the motion model determined in this ...

Computerized method and apparatus for iterative calculation of the general linear model using only substantially orthogonal model functions

In a method and apparatus for incremental calculation of a general linear model given intermittent correlation of the model functions, data composed of a number of data sets with a number of different random samples are processed. For each independent random sample contained in the data set, a dependency on an order quantity is compared with the dependency on the order quantity in model functions contained in a model matrix G using the general linear model in order to check the occurrence of specific characteristics in the dependency of the random sample on the order quantity. The calculation of the general linear model ensues incrementally from data set to data set. Before the calculations for the data of a data set, a check is made as to whether the model functions contained in the model matrix G exhibit orthogonal portions to a sufficient degree in a segment (represented by the data set) of the dependency on the order quantity for the calculations. Given a degree of parallelism that is too high, one or more model functions of the model matrix G that interfere with the orthogonality are masked out to a predeterminable degree in the calculations for this data set, in order to achieve the sufficient degree of orthogonal portions. An incremental calculation of the general linear model with corresponding output of intermediate results is thereby enabled, even given the presence of intermittent correlating model functions in the model matrix.

Method for the operation of a magnetic resonance apparatus

In a method for the operation of a magnetic resonance apparatus an anatomical image of a region of an examination subject to be imaged is generated with a prescribable resolution and quality, a functional image of the region to be imaged is generated, the functional image is superimposed on the anatomical image, and at least one area of the region to be imaged wherein the functional image contains unreliable information is identified in the superimposition.

Method and device for determination of coefficients of a magnetic resonance diffusion tensor

In a method and apparatus for determination of coefficients of a diffusion tensor to describe a diffusion process within a subject, spatially-resolved, variously diffusion-coded diffusion data are generated from volume elements of the subject under consideration of control data for various diffusion codings. Intermediate diffusion data are generated for each volume element from diffusion data measured with a first diffusion coding. Updated intermediate diffusion data are then determined for each volume element from diffusion data generated preceding the intermediate diffusion data and current diffusion data measured with a different diffusion coding. Components of a diffusion tensor are determined from the last determined, updated intermediate diffusion data after multiple updates with various diffusion codings.

MR-compatible video system

In an MR-compatible video system, MR-compatible video eyeglasses are connected to a graphics unit. A position sensor arrangement is connected to the graphics unit to detect the position and/or orientation of the MR-compatible video eyeglasses and/or the position of the pupils of a user. The graphics unit comprises means for producing image signals for MR-compatible video eyeglasses depending on the position and/or orientation of the MR-compatible video eyeglasses and/or the position of the pupils of the user.

Method for interactively segmenting structures in image data records and image processing unit for carrying out the method

In the method according to at least one embodiment of the invention, an image data record having a structure to be segmented is first of all displayed by display equipment. Using an input apparatus, a segmentation algorithm to be used is selected from a group of different segmentation algorithms, including a contour-based segmentation algorithm, a region-based segmentation algorithm and manual segmentation, based on the local image contrast in a region to be segmented in the image data record. A region to be segmented in the image data record is marked, and the structure to be segmented in the marked region is segmented using the selected segmentation algorithm, and a segmentation result of the segmentation is displayed. This procedure (selecting a segmentation algorithm/marking a region/segmenting the region/displaying) is repeated until the structure to be segmented is completely segmented in the displayed image data record and a boundary line of the structure is produced as the final segmentation result. Lastly, the final segmentation result is saved and/or displayed. Furthermore, an image processing unit is disclosed for carrying out the method of at least one embodiment.

METHOD FOR CONTROLLING THE ACQUISITION AND/OR EVALUATION OPERATION OF IMAGE DATA IN MEDICAL EXAMINATIONS

In a method for controlling the acquisition and/or evaluation operation of image data in medical examinations, using a statistical model of the target volume based on data about real anatomy, spatial information (in particular position, orientation and shape) of the target volume are automatically determined in a previously-acquired planning image data set wholly or partially showing a target volume, and the acquisition and/or evaluation operation is controlled using the spatial information.

METHOD FOR DETERMINATION OF THE TRANSVERSE RELAXATION TIME T2* IN MR DATA

In a method for determination of the transverse relaxation time T2* in MR data, the T2* relaxation is detected in a measurement volume and the transverse relaxation time is determined from the time curve of the magnetization in the measurement volume. In order to be able to more reliably determine the transverse relaxation time T2*, a local magnetic field in the measurement volume is determined and the transverse relaxation time is corrected dependent on the local magnetic field such that a corrected transverse relaxation time is obtained. The local magnetic field is determined by determination of the phase curve of the magnetization from multiple predetermined echo times, the echo times having different intervals (ΔTE) from one another, and determination of the local magnetic field from the phase curve of the magnetization. The interval between the echo times at least at one point in the measurement volume is adapted such that the local magnetic field can be determined without phase compression ...

Method for segmenting structures in image data records and image processing unit for carrying out the method

In the method according to at least one embodiment of the invention, a first segmentation of a structure in an image data record is firstly carried out, and a first final segmentation result is obtained therefrom. A region in the image data record is selected based on the first final segmentation result obtained. A first band is placed at a first, outwardly pointing distance from the selected region. This first band characterizes a background region. A second band is placed at a second, inwardly pointing distance from the projected first final segmentation result of the first segmentation. This second band characterizes a structure region. A further segmentation is carried out based on the characterized background region and the characterized structure region, and the final segmentation result of the further segmentation is saved and/or displayed. Furthermore, an image processing unit for carrying out the method is disclosed.

System and method for lesion segmentation in whole body magnetic resonance images

A method for lesion segmentation in 3-dimensional (3D) digital images, includes selecting a 2D region of interest (ROI) from a 3D image, the ROI containing a suspected lesion, extending borders of the ROI to 3D forming a volume of interest (VOI), where voxels on the borders of the VOI are initialized as background voxels and voxels in an interior of the VOI are initialized as foreground voxels, propagating a foreground and background voxel competition where for each voxel in the VOI, having each neighbor voxel in a neighborhood of the voxel attack the voxel, and, if the attack is successful, updating a label and strength of the voxel with that of the successful attacking voxel, and evolving a surface between the foreground and background voxels in 3D until an energy functional associated with the surface converges in value, where the surface segments the suspected lesion from the image.

Method for controlling the acquisition and/or evaluation operation of image data in medical examinations

In a method for controlling the acquisition and/or evaluation operation of image data in medical examinations, using a statistical model of the target volume based on data about real anatomy, spatial information (in particular position, orientation and shape) of the target volume are automatically determined in a previously-acquired planning image data set wholly or partially showing a target volume, and the acquisition and/or evaluation operation is controlled using the spatial information.

Method, image processing device and computed tomography system for obtaining a 4D image data record of an object under examination and computer program product with program code sections for carrying out a method of this kind

A method is disclosed for obtaining a 4D image data record of an object under examination using measured data from a computed tomography system in which projection data are accepted which were acquired by way of the computed tomography system at different imaging time points by way of an helical scan method following the administration of contrast medium to the object under examination). On the basis of the projection data, image data of the object under examination are then reconstructed and linked with the imaging time points to a space/time data record. Then, a parameterized 4D image data model is individualized with adaptation to the space/time data record by varying model parameters. An image processing device and a computed tomography system with an image processing device of this kind are also described.

Administration of differently-versioned configuration files of a medical facility

In a method, system and computer program product for administration of different versions of a configuration file for configuration of medical apparatuses in a clinical system, the configuration file can also be locally changed at the apparatus itself and be made centrally available. Together with one configuration file, a set of versions regarding the configuration file is automatically administered while maintaining consistency of the data.

METHOD, IMAGE PROCESSING DEVICE AND COMPUTED TOMOGRAPHY SYSTEM FOR OBTAINING A 4D IMAGE DATA RECORD OF AN OBJECT UNDER EXAMINATION AND COMPUTER PROGRAM PRODUCT WITH PROGRAM CODE SECTIONS FOR CARRYING OUT A METHOD OF THIS KIND

A method is disclosed for obtaining a 4D image data record of an object under examination using measured data from a computed tomography system in which projection data are accepted which were acquired by way of the computed tomography system at different imaging time points by way of an helical scan method following the administration of contrast medium to the object under examination). On the basis of the projection data, image data of the object under examination are then reconstructed and linked with the imaging time points to a space/time data record. Then, a parameterized 4D image data model is individualized with adaptation to the space/time data record by varying model parameters. An image processing device and a computed tomography system with an image processing device of this kind are also described.

MR-compatible video system

In an MR-compatible video system, MR-compatible video eyeglasses are connected to a graphics unit. A position sensor arrangement is connected to the graphics unit to detect the position and/or orientation of the MR-compatible video eyeglasses and/or the position of the pupils of a user. The graphics unit comprises means for producing image signals for MR-compatible video eyeglasses depending on the position and/or orientation of the MR-compatible video eyeglasses and/or the position of the pupils of the user.

Method for interactively segmenting structures in image data records and image processing unit for carrying out the method

In the method according to at least one embodiment of the invention, an image data record having a structure to be segmented is first of all displayed by display equipment. Using an input apparatus, a segmentation algorithm to be used is selected from a group of different segmentation algorithms, including a contour-based segmentation algorithm, a region-based segmentation algorithm and manual segmentation, based on the local image contrast in a region to be segmented in the image data record. A region to be segmented in the image data record is marked, and the structure to be segmented in the marked region is segmented using the selected segmentation algorithm, and a segmentation result of the segmentation is displayed. This procedure (selecting a segmentation algorithm/marking a region/segmenting the region/displaying) is repeated until the structure to be segmented is completely segmented in the displayed image data record and a boundary line of the structure is produced as the final ...

Device and method for generating X-ray, and computing program and data medium

The invention relates to a device and a method for generating X-ray. The device comprises at least one X-ray tube and a filter. The X-ray tube has at least two foci that are different from one another, and the device is operated to switch between the foci in order to generate x-ray radiation. The filter is associated with the at least one x-ray tube such that the spectrum of X-ray emanating from a first foci is not filtered by the filter and the spectrum of X-ray emanating from a second foci is filtered by the filter, such that the average photon energy of the filtered spectrum of X-ray is higher than the average photon energy of the unfiltered spectrum of X-ray. The invention also relates to a computing program for accomplishing the method and a data medium.

Method for the implementation of a perfusion measurement with magnetic resonance imaging

In a method for the implementation of a perfusion measurement with magnetic resonance imaging, image datasets of a region of an examination subject to be imaged and positioned in an imaging volume of a magnetic resonance apparatus are generated in a time sequence, positional changes of the region to be imaged that occur relative to the imaging volume during the time sequence are acquired, and a correction of influences of the positional changes on the image datasets ensues according to the acquired positional changes.

Method for operating a magnetic resonance apparatus employing a superimposed anatomical image and functional image to designate an unreliable region of the functional image

In a method for the operation of a magnetic resonance apparatus an anatomical image of a region of an examination subject to be imaged is generated with a prescribable resolution and quality, a functional image of the region to be imaged is generated, the functional image is superimposed on the anatomical image, and at least one area of the region to be imaged wherein the functional image contains unreliable information is identified in the superimposition.

ADMINISTRATION OF DIFFERENTLY-VERSIONED CONFIGURATION FILES OF A MEDICAL FACILITY

In a method, system and computer program product for administration of different versions of a configuration file for configuration of medical apparatuses in a clinical system, the configuration file can also be locally changed at the apparatus itself and be made centrally available. Together with one configuration file, a set of versions regarding the configuration file is automatically administered while maintaining consistency of the data.

Method for the operation of a magnetic resonance apparatus

In a method for the operation of a magnetic resonance apparatus, nuclear magnetic signals obtained from an image region of an examination subject that is positioned in an imaging volume of the apparatus are entered into a k-space matrix as respective complex numbers are a motion model is determined with which translational motion of the subject with respect to the imaging volume can be described with a time-dependency, at least for prescribable points of the image region. The motion model is determined with respective phase values of at least two values of the k-space matrix that are point-symmetrically located in the k-space matrix with respect to a symmetry point of the k-space matrix. These two values behave as complex conjugates of each other in the absence of any motion between the registration times of the two values, and, any translational motion is thus reflected in the phase values. The values of the k-space matrix are corrected according to the motion model determined in this manner.

Method and apparatus for accelerated spiral-coded imaging in magnetic resonance tomography

In a method and apparatus for accelerated spiral-coded imaging (scanning k-space with a spiral trajectory) in magnetic resonance tomography, the user-defined sequence forming the basis of the spiral scanning is modified such that the k-matrix forming the basis of the sequence is scanned only in a sub-region, the sub-region being defined by a symmetrical shortening on both sides of the k-space matrix in a first direction as well as by a one-sided shortening of the k-space matrix in a second direction orthogonal to the first direction.

METHOD FOR CONTROLLING AN IMAGE DATA ACQUISITION AND/OR EVALUATION PROCEDURE IN MEDICAL EXAMINATIONS

In a method to control the acquisition and/or evaluation procedure of image data in medical examinations, in a previously acquired planning image data set entirely or partially covering a target volume, spatial information of the target volume is determined automatically using a statistical model of the target volume based on data about real anatomy. The acquisition and/or evaluation operation is controlled using the spatial information. A statistical model of at least one greyscale value distribution in the region of the surface of the target volume is used to calculate the location information.

Method and apparatus for accelerated spiral-coded imaging in magnetic resonance tomography

In a method and apparatus for accelerated spiral-coded imaging (scanning k-space with a spiral trajectory) in magnetic resonance tomography, the user-defined sequence forming the basis of the spiral scanning is modified such that the k-matrix forming the basis of the sequence is scanned only in a sub-region, the sub-region being defined by a symmetrical shortening on both sides of the k-space matrix in a first direction as well as by a one-sided shortening of the k-space matrix in a second direction orthogonal to the first direction.

Method for the operation of a magnetic resonance apparatus, whereby positional changes are acquired with orbital navigator echos

In a method for the operation of a magnetic resonance apparatus, wherein a positional change of a region of an examination subject to be imaged relative to an imaging volume of the apparatus is acquired with orbital navigator echos, at least one reference dataset with data points is generated, the data points in the k-space, at least on a partial surface of a spherical surface, being arranged to occupy the partial surface in surface-covering fashion, and the partial surface extending at least around a great circle of the spherical surface corresponding to a maximally expected angular range of the positional change. For acquiring the positional change, a dataset of at least one of the navigator echos is compared to the reference dataset.

Method for improving the quality of an image

In a method for improving the quality, particularly the signal-to-noise ratio, of an image, first image data are subjected to a mathematical operation in the position domain that improves the image quality, with picture elements in the environment of the individual picture element, for each individual picture element of the image to be subjected to the mathematical operation are provided with mutually independent, first weighting factors that have a magnitude dependent on the spatial distance of the respective picture element of the environment from the individual picture element, and with which the mathematical operation is implemented for the individual picture element. Picture elements in the environment of the individual picture element for each individual picture element of the image are additionally provided with mutually independent, second weighting factors that have a magnitude dependent on intensity differences or color differences of the respective picture element of the environment ...

Method and device for fast processing of measurement data with a plurality of independent random samples

In a method as well as a device to process measurement data that are composed of a number of data sets with a number of independent random samples originating via temporally successive measurements, for a comparison of the time curve of each acquired random sample with the time curve of a model function using the general linear model, the required calculations are implemented data set-by-data set in a series of the data sets originating from the temporal sequence of measurements, and stored as an intermediate result, with the intermediate results of the directly preceding data set being updated with the new calculations. The comparison can be calculated efficiently and quickly, with a saving of storage space.

Method for operating a magnetic resonance tomography apparatus wherein the location coding is adapted to a positional change of the examination subject

In a method for the operation of a magnetic resonance tomography apparatus having a gradient system and a radio-frequency system that, among other things, serve for location coding, a region to be imaged in an examination subject is placed in an imaging volume of the apparatus. Image datasets of at least parts of the region to be imaged are generated in a time sequence. A positional change of at least a part of the region to be imaged with respect to the imaging volume is determined by a comparison of at least a first image dataset to a second image dataset that have been generated in chronological succession. A location coding is adapted corresponding to the identified positional change for at least one image dataset that is generated following the compared image datasets in time.

Method for the implementation of a perfusion measurment with magnetic resonance imaging

In a method for the implementation of a perfusion measurement with magnetic resonance imaging, image datasets of a region of an examination subject to be imaged and positioned in an imaging volume of a magnetic resonance apparatus are generated in a time sequence, positional changes of the region to be imaged that occur relative to the imaging volume during the time sequence are acquired, and a correction of influences of the positional changes on the image datasets ensues according to the acquired positional changes.

Method and System for Providing Information About a State of Health of a Patient

A computer-implemented method for providing information about a state of health of a patient may include: receiving a plurality of patient information of the patient by means of an interface, ascertaining health information about the patient by means of a computing unit as a function of the plurality of patient information and a first function, and checking whether a trigger condition is fulfilled based on the ascertained health information about the patient, as well as providing the ascertained health information about the patient as a function of the trigger condition.

Method for operating a magnetic resonance imaging apparatus ensuring coincidence of images obtained in different examinations with respectively different positions of a subject

In a method for the operation of a magnetic resonance apparatus, in a first examination of an examination subject, a first scout dataset of the examination subject is produced and with reference to which at least one first slice of an examination subject to be imaged is determined. A further scout dataset of the examination subject is produced in at least one further examination of the examination subject temporally following the first examination. A change in position between the first and the further scout dataset is identified, and at least one further slice of the examination subject to be imaged is defined according to the identified positional change, this at least one further slice exhibiting an identical positioning within the examination subject with respect to the first slice.

Computer system and method for image processing

A computer system for image processing has a first working environment with a first program for image processing, as well as a second working environment, logically separated from the first working environment, with a second program for image processing. The first working environment is implemented on a first server. Furthermore, the first working environment is designed to receive a first command to execute the first program and a second command to execute the second program, and to send the second command to the second working environment. The second working environment is designed to send an image processed by the second program to the first working environment. The communication of a user with the first and second program thus occurs via a uniform platform in the form of the first working environment, and the integration of the second program for image processing into the workflow is facilitated.

Method for controlling an image data acquisition and/or evaluation procedure in medical examinations

In a method to control the acquisition and/or evaluation procedure of image data in medical examinations, in a previously acquired planning image data set entirely or partially covering a target volume, spatial information of the target volume is determined automatically using a statistical model of the target volume based on data about real anatomy. The acquisition and/or evaluation operation is controlled using the spatial information. A statistical model of at least one greyscale value distribution in the region of the surface of the target volume is used to calculate the location information.

Method for operating a magnetic resonance tomography apparatus with shim coil adjustment dependent on positional changes of the imaged region

In a method for operating a magnetic resonance tomography system having a shim coil arrangement and a gradient coil arrangement, in which, in order to generate an image dataset of a region of an examination subject to be imaged, at least the region that is to be imaged is borne in an imaging volume of the system, an initial shim adjustment procedure is carried out, a change (if it occurs) in the position of the imaged region in relation to the imaging volume is detected, and a current in the shim coil arrangement is modified dependent on the detected position change.

Method for the operation of a magnetic resonance tomography apparatus

In a method for the operation of a magnetic resonance tomography apparatus having a gradient system and a radio-frequency system that, among other things, serve for location coding, a region to be imaged in an examination subject is placed in an imaging volume of the apparatus. Image datasets of at least parts of the region to be imaged are generated in a time sequence. A positional change of at least a part of the region to be imaged with respect to the imaging volume is determined by a comparison of at least a first image dataset to a second image dataset that have been generated in chronological succession. A location coding is adapted corresponding to the identified positional change for at least one image dataset that is generated following the compared image datasets in time.

Method for determination of the transverse relaxation time T2* in MR data

In a method for determination of the transverse relaxation time T2* in MR data, the T2* relaxation is detected in a measurement volume and the transverse relaxation time is determined from the time curve of the magnetization in the measurement volume. In order to be able to more reliably determine the transverse relaxation time T2*, a local magnetic field in the measurement volume is determined and the transverse relaxation time is corrected dependent on the local magnetic field such that a corrected transverse relaxation time is obtained. The local magnetic field is determined by determination of the phase curve of the magnetization from multiple predetermined echo times, the echo times having different intervals (DeltaTE) from one another, and determination of the local magnetic field from the phase curve of the magnetization. The interval between the echo times at least at one point in the measurement volume is adapted such that the local magnetic field can be determined without phase ...

Medical image acquisition apparatus and operating method therefor

In a medical image acquisition, and operating method, before acquiring a current planning image data set from a subject, a statistical atlas is generated from multiple planning image data sets using a specific measurement protocol, as a statistical compilation including an average image data set electronically associated with association information that identifies different anatomical entities represented by the statistical compilation. After the current planning image data set is acquired, the stored average image data set is transformed into the current planning image data set, with the association information being accurately associated with the current planning image data set. A diagnostic image acquisition of the subject is then controlled using the association information that is now associated with the current planning image data set.

Method for improving the quality of an image

In a method for improving the quality, particularly the signal-to-noise ratio, of an image, first image data are subjected to a mathematical operation in the position domain that improves the image quality, with picture elements in the environment of the individual picture element, for each individual picture element of the image to be subjected to the mathematical operation are provided with mutually independent, first weighting factors that have a magnitude dependent on the spatial distance of the respective picture element of the environment from the individual picture element, and with which the mathematical operation is implemented for the individual picture element. Picture elements in the environment of the individual picture element for each individual picture element of the image are additionally provided with mutually independent, second weighting factors that have a magnitude dependent on intensity differences or color differences of the respective picture element of the environment ...

Method and device for determination of coefficients of a magnetic resonance diffusion tensor

In a method and apparatus for determination of coefficients of a diffusion tensor to describe a diffusion process within a subject, spatially-resolved, variously diffusion-coded diffusion data are generated from volume elements of the subject under consideration of control data for various diffusion codings. Intermediate diffusion data are generated for each volume element from diffusion data measured with a first diffusion coding. Updated intermediate diffusion data are then determined for each volume element from diffusion data generated preceding the intermediate diffusion data and current diffusion data measured with a different diffusion coding. Components of a diffusion tensor are determined from the last determined, updated intermediate diffusion data after multiple updates with various diffusion codings.

Method and magnetic resonance tomography apparatus for correcting changes in the basic magnetic field

In a method for calculating a one-dimensional map of the base magnetic field B0 and subsequent correction, based on this map, of image artifacts due to B0 field changes, in the examination of a subject with a magnetic resonance tomography apparatus, data for a slice of the subject to be examined are obtained with a sequence of a fast MRT imaging method that includes at least three phase correction scans and measurement signals of the respective phase correction scans as well as of the slice are obtained, the phase difference of the data points (respectively pertaining to one another) of two phase correction scans, in the form of the acquired measurement signals of the respective phase correction scans, are calculated point-by-point, the average phase difference between the phase correction scans is evaluated, and the frequency offset between the actual resonance frequency relative to the adjusted resonance frequency is calculated based on the average phase difference and the echo time difference ...

Method for the operation of a magnetic resonance apparatus

In a method for the operation of a magnetic resonance apparatus, in a first examination of an examination subject, a first scout dataset of the examination subject is produced and with reference to which at least one first slice of an examination subject to be imaged is determined. A further scout dataset of the examination subject is produced in at least one further examination of the examination subject temporally following the first examination. A change in position between the first and the further scout dataset is identified, and at least one further slice of the examination subject to be imaged is defined according to the identified positional change, this at least one further slice exhibiting an identical positioning within the examination subject with respect to the first slice.

Method for the operation of a magnetic resonance apparatus, whereby positional changes are acquired with orbital navigator echos

In a method for the operation of a magnetic resonance apparatus, wherein a positional change of a region of an examination subject to be imaged relative to an imaging volume of the apparatus is acquired with orbital navigator echos, at least one reference dataset with data points is generated, the data points in the k-space, at least on a partial surface of a spherical surface, being arranged to occupy the partial surface in surface-covering fashion, and the partial surface extending at least around a great circle of the spherical surface corresponding to a maximally expected angular range of the positional change. For acquiring the positional change, a dataset of at least one of the navigator echos is compared to the reference dataset.

CONTROL OBJECT FOR CONTROLLING A TRANSFER OF DUAL-ENERGY CT IMAGE DATA TO A CLIENT DEVICE

A system and method for processing of dual-energy image data measurements are disclosed. The image data acquired on a computed tomograph is collected together to form a container before being sent to client devices for post-processing. The container contains a control object for the respective image dataset, which includes evaluation specifications and post-processing specifications for post-processing of the image data on the client device. 1. A system for processing of medical image data , comprising:an image data acquisition system, to acquire the medical image data;a processing unit, to create a container, the container including the medical image data and an assigned control object;at least one client device, to detect the container and to extract the assigned control object from the container, to control post-processing of the medical image data with the assigned control object; anda network for exchange of data between the medical image data acquisition system, the processing unit and the at least one client device.2. The system of claim 1 , wherein the assigned control object serves to control a visualization of the medical image data on at least one of the at least one client device.3. The system of claim 1 , wherein the processing unit is embodied as a cloud server.4. The system of claim 1 , wherein the assigned control object includes an evaluation specification.5. The system of claim 4 , wherein the evaluation specification includes program code or a reference to the program code claim 4 , accessible via a network interface.6. The system of claim 1 , wherein the assigned control object includes a transformation command claim 1 , to transform a data representation in the medical image data into pixel values on the at least one client device.7. The system of claim 1 , wherein the assigned control object serves to create a result object on the at least one client device.8. The system of claim 1 , wherein the assigned control object includes an interaction ...

Device and method for generating X-radiation and computer program and data carrier

Die Erfindung betrifft eine Einrichtung und ein Verfahren zur Erzeugung von Röntgenstrahlung zur Untersuchung eines Messobjektes (P) mit wenigstens zwei Spektren von Röntgenstrahlung unterschiedlicher mittlerer Photonenenergien. Die Einrichtung weist wenigstens eine wenigstens zwei voneinander verschiedene Foki (21, 22) umfassende Röntgenröhre (6), zwischen welchen Foki (21, 22) zur Erzeugung von Röntgenstrahlung gewechselt werden kann, wobei von dem jeweiligen Fokus (21, 22) jeweils ein Spektrum von Röntgenstrahlung ausgeht, und ein der wenigstens einen Röntgenröhre (6) derart zugeordnetes Filter (20) auf, dass das von dem ersten Fokus (21) ausgehende Spektrum von Röntgenstrahlung nicht durch den Filter (20) gefiltert wird und das von dem zweiten Fokus (21) ausgehende Spektrum von Röntgenstrahlung derart von dem Filter (20) gefiltert wird, dass die mittlere Photonenenergie des gefilterten Spektrums von Röntgenstrahlung höher ist als die mittlere Photonenenergie des von dem ersten Fokus (21) ausgehenden ungefilterten Spektrums von Röntgenstrahlung. Die Erfindung betrifft außerdem ein das Verfahren umsetzendes Rechenprogramm (13) sowie einen das Rechenprogramm (13) aufweisenden Datenträger (14, 15). The invention relates to a device and a method for generating X-rays for examining a measurement object (P) with at least two spectra of X-rays of different mean photon energies. The device has at least one x-ray tube (6) comprising at least two different foci (21, 22), between which foci (21, 22) can be switched to generate x-ray radiation, a spectrum of the respective focus (21, 22) emits X-rays, and a filter (20) assigned to the at least one X-ray tube (6) such that the spectrum of X-rays emanating from the first focus (21) is not filtered by the filter (20) and that from the second focus ( 21) outgoing spectrum of X-rays is filtered by the filter (20) in such a way that the mean photon energy of the filtered spectrum of X-rays is higher than the mean photon energy of ...

Device and method for generating X-radiation and computer program and data carrier

Einrichtung zur Erzeugung von Röntgenstrahlung zur Untersuchung eines Messobjektes (P) mit wenigstens zwei Spektren von Röntgenstrahlung unterschiedlicher mittlerer Photonenenergien, aufweisend – wenigstens eine wenigstens zwei voneinander verschiedene Foki (21, 22) umfassende Röntgenröhre (6), zwischen welchen Foki (21, 22) zur Erzeugung von Röntgenstrahlung gewechselt werden kann, wobei von dem jeweiligen Fokus (21, 22) jeweils ein Spektrum von Röntgenstrahlung ausgeht, und – ein der wenigstens einen Röntgenröhre (6) derart zugeordnetes Filter (20), dass das von dem ersten Fokus (21) ausgehende Spektrum von Röntgenstrahlung nicht durch den Filter (20) gefiltert wird und das von dem zweiten Fokus (21) ausgehende Spektrum von Röntgenstrahlung derart von dem Filter (20) gefiltert wird, dass die mittlere Photonenenergie des gefilterten Spektrums von Röntgenstrahlung höher ist als die mittlere Photonenenergie des von dem ersten Fokus (21) ausgehenden ungefilterten Spektrums von Röntgenstrahlung, wobei an die wenigstens eine Röntgenröhre (6) wenigstens zwei voneinander verschiedene Röhrenspannungen anlegbar sind, zwischen denen umgeschaltet werden kann, wobei im Betrieb des zweiten Fokus (22) eine höhere Röhrenspannung an die wenigstens eine Röntgenröhre (6) angelegt ist als im Betrieb des ersten Fokus (21).

Computed tomography device with a device for data transmission and method for data transmission in a computed tomography device

Computertomographiegerät (1) mit einer Gantry (2), aufweisend einen stationären Teil (3) und einen rotierbaren Teil (4), welcher rotierbare Teil (4) im Betrieb des Computertomographiegerätes (1) um ein scheibenförmiges oder zylinderförmiges Messfeld (12), in dem ein Messobjekt (P) angeordnet werden kann, rotiert, bei dem für eine Datenübertragung vom rotierbaren Teil (4) zum stationären Teil (3) und/oder für eine Datenübertragung vom stationären Teil (3) zum rotierbaren Teil (4) am stationären Teil (3) oder am rotierbaren Teil (4) wenigstens eine erste, eine Richtcharakteristik aufweisende Richtantenne (26, 29, 52, 55) angeordnet ist, deren Richtcharakteristik zur Unterdrückung eines Mehrwegempfangs innerhalb der Gantry in Richtung auf wenigstens eine zweite, mit der Richtantenne (26, 29, 52, 55) zusammenwirkende, am rotierbaren Teil (4) oder am stationären Teil (3) angeordnete Antenne (21, 42, 45) elektronisch einstellbar ist, wobei die Richtcharakteristik der wenigstens einen ersten Richtantenne (26, 29, 52, 55) derart elektronisch eingestellt wird, dass die Datenübertragung zwischen der wenigstens...

Method for determining transverse relaxation time T2 * in MR data

Die Erfindung betrifft ein Verfahren zum Bestimmen der transversalen Relaxationszeit T2* bei MR-Daten mit den Schritten: Erfassen der zeitlich veränderlichen transversalen Magnetisierung in einem Messvolumen und Bestimmen der transversalen Relaxationszeit aus dem zeitlichen Verlauf der Magnetisierung in dem Messvolumen. Um die transversale Relaxationszeit T2* zuverlässiger bestimmen zu können, werden die Schritte durchgeführt: Ermitteln eines lokalen Magnetfeldes in dem Messvolumen und Korrigieren der transversalen Relaxationszeit in Abhängigkeit von dem lokalen Magnetfeld, so dass sich eine korrigierte transversale Relaxationszeit ergibt. The invention relates to a method for determining the transverse relaxation time T2 * in MR data with the following steps: acquiring the temporally variable transverse magnetization in a measurement volume and determining the transverse relaxation time from the temporal course of the magnetization in the measurement volume. In order to be able to determine the transverse relaxation time T2 * more reliably, the following steps are carried out: Determining a local magnetic field in the measurement volume and correcting the transverse relaxation time as a function of the local magnetic field, so that a corrected transverse relaxation time is obtained.

Rapid processing of measurement data for functional image generation involves updating intermediate results of preceding data record with new computations so intermediate and end results always available

The method involves feeding a data record for all relevant measurement data into computations required for a comparison and storing as intermediate results and updating the intermediate results of the preceding data record with the new computations so that intermediate and end results are always available to form an indication of the occurrence of certain characteristics. The method involves comparing the time profile for each independent sample in a measurement data record with the time profile of at least one model function in a model matrix using the general linear model to check for the occurrence of certain characteristics. A data record for all relevant measurement data is fed into the computations required for the comparison and stored as intermediate results, the intermediate results of the preceding data record are updated by the new computations so that intermediate and end results are always available to form an indication of the occurrence of the characteristics. AN Independent claim is also included for the following: (a) an arrangement for processing measurement data.

Method for operating a magnetic resonance imaging device has compensation for patient movement between successive images so that more precise medical diagnostics can be made

Method for operating a magnetic resonance imaging (MRI) device in which a first scout data set is produced from which a first view of the object being imaged is reproduced. After a time lag a second data set is produced with a corresponding view. A position change is calculated between first and second images and according to the calculated position change, at least one further view is recorded that corresponds to the same position in the first object view.

Method of obtaining magnetic resonance imaging (MRI) data

Das Verfahren umfaßt folgende Schritte: DOLLAR A a) Auslesen eines Kernresonanzsignals (S) unter einem Auslesegradienten (Gr), DOLLAR A b) Phasenempfindliche Demodulation und Abtastung des ausgelesenen Kernresonanzsignals (S), DOLLAR A c) Abspeichern der Abtastwerte in eine Rohdatenmatrix (RD) im k-Raum in einem Polar-Koordinatensystem, DOLLAR A d) Wiederholung der Schritte a) bis c) mit jeweils schrittweise gedrehten Richtungen des Auslesegradienten (Gr) so oft, bis ein kreisförmiger k-Raum mit Abtastwerten belegt ist.

Method and apparatus for accelerated spiral coded imaging in magnetic resonance imaging

Verfahren zur spiralförmigen k-Raum-Abtastung in der Magnetresonanztomographie, dadurch gekennzeichnet, dass die einer spiralförmigen Abtastung zugrundeliegende benutzerdefinierte Sequenz derart modifiziert wird, dass die der Sequenz zugrundeliegende k-Matrix nur in einem Teilbereich gemessen wird, wobei der Teilbereich durch eine symmetrische Verkürzung zu beiden Seiten der k-Raum-Matrix in einer ersten Richtung sowie durch eine einseitige Verkürzung der k-Raum-Matrix in einer zur ersten Richtung orthogonalen zweiten Richtung definiert ist. method for helical k-space sampling in magnetic resonance imaging, characterized in that the a spiral Sample based custom sequence modified in this way is that the k-matrix underlying the sequence only in one Part area is measured, the sub-area by a symmetrical shortening to both sides of the k-space matrix in a first direction as well by a one-sided shortening the k-space matrix in defines a second direction orthogonal to the first direction is.

Method for use in generating a computer-based visualization of 3d medical image data

A method for use in generating a computer-based visualization of 3D medical image data is described. The method includes receiving 3D medical image data and performing a selection process to select first image data forming a first portion of the 3D medical image data, the first image data representing a first anatomical object of a given type. An analysis process is performed on the first image data, a parameter of the analysis process being based on the given type of the first anatomical object. Based at least in part on a result of the analysis process, a visual parameter mapping for the first portion is determined, for use in a rendering process for generating a visualization of the 3D medical image data. Also described is a method of generating a computer-based visualization of 3D medical image data and an apparatus for performing the methods.

Method and device for the rapid processing of measurement data with a large number of independent samples

Verfahren zur Verarbeitung von Messdaten, die sich aus mehreren durch zeitlich aufeinander folgende Messungen entstandenen Datensätzen mit einer Vielzahl unabhängiger Stichproben zusammensetzen, bei dem für jede im Datensatz enthaltene unabhängige Stichprobe ein gemessener zeitlicher Verlauf, der sich aus Messdaten x der Stichprobe ergibt, mit dem zeitlichen Verlauf zumindest einer in einer Modell-Matrix G enthaltenen Modellfunktion unter Einsatz des General Linear Model verglichen wird, um das Auftreten bestimmter Charakteristika im gemessenen zeitlichen Verlauf zu überprüfen, wobei für den Vergleich erforderliche Berechnungen aus den Messdaten in einer sich aus der zeitlichen Abfolge der Messungen ergebenden Reihenfolge der Datensätze jeweils für alle relevanten Messdaten eines Datensatzes durchgeführt und als Zwischenergebnisse gespeichert werden, indem die Zwischenergebnisse des jeweils unmittelbar vorangehenden Datensatzes mit den neuen Berechnungen aktualisiert werden, so dass jederzeit ein Zwischenergebnis und nach dem einmaligen Durchlaufen aller Datensätze ein Endergebnis vorliegt, aus dem eine Aussage über das Auftreten der Charakteristika im gemessenen Verlauf... method for processing measurement data, which consists of several by time successive measurements resulting records with a variety of independent Assemble samples containing, for each of the data set independent Sample a measured time course resulting from measurement data x of the sample results in at least one over time used in a model matrix G model function The General Linear Model is compared to the occurrence of certain Check characteristics in the measured time course, where for the Comparison required calculations from the measured data in one sequence resulting from the time sequence of the measurements the records each for everyone relevant measurement data of a data set and as interim results be saved by the intermediate results of each immediately previous record updated with the new ...

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Method, image processing device and computed tomography system for obtaining a 4D image data record of an object under examination and computer program product with program code sections for carrying out a method of this kind The invention relates to a method for obtaining a 4D image data record (14) of an object under examination (12) using measured data from a computed tomography system (1) in which projection data (18) are accepted which were acquired by means of the computed tomography system (1) at different imaging time points (t1, t2) by means of an helical scan method following the administration of contrast medium (KM) to the object under examination (12). On the basis of the projection data (18), image data (20) of the object under examination (12) are then reconstructed and linked with the imaging time points (t1, t2) to a space/time data record (22). Then, a prespecified parameterized 4D image data model (34) is individualized with adaptation (AN) to the space/time data record (22) by varying model parameters. An image processing device (10) and a computed tomography system (1) with an image processing device (10) of this kind are also described. The invention also relates to a computer program product with program code sections for carrying out a method of this kind.

Verfahren und System zu einer Bereitstellung einer Information über einen Gesundheitszustand eines Patienten

Die Erfindung betrifft ein Computer-implementiertes Verfahren zu einem Bereitstellen einer Information über einen Gesundheitszustand eines Patienten, umfassend die Schritte: Empfangen (S1) von einer Mehrzahl von Patienteninformationen (PI) des Patienten mittels einer Schnittstelle (SYS.IF), Ermitteln (S3) einer Gesundheitsinformation über den Patienten in Abhängigkeit der Mehrzahl von Patienteninformationen (PI) und einer ersten Funktion (F1) mittels einer Recheneinheit (SYS.CU) und Prüfen ob basierend auf der ermittelten Gesundheitsinformation über den Patienten eine Auslösebedingung erfüllt ist sowie Bereitstellen (S5) der ermittelten Gesundheitsinformation über den Patienten in Abhängigkeit der Auslösebedingung. Die Erfindung betrifft ferner ein System (SYS), umfassend eine Recheneinheit (SYS.CU) und eine Benutzerschnittstelle (SYS.OIF), wobei die Recheneinheit (SYS.CU) konfiguriert ist, ein erfindungsgemäßes Verfahren zu koordinieren und durchzuführen und eine ermittelte Information über einen Gesundheitszustand eines Patienten mittels der Benutzerschnittstelle (SYS.OIF) bereitzustellen.

Method and apparatus for the visualization of three-dimensional objects

A computer-implemented method and a corresponding apparatus are provided for the provision of a two-dimensional visualization image having a plurality of visualization pixels for the visualization of a three-dimensional object represented by volume data for a user. Context information for the visualization is obtained by the evaluation of natural language and is taken into account in the visualization. The natural language can be in the form of electronic documents, which are assigned or can be assigned to the visualization process. In addition, the natural language can be in the form of a speech input of a user, during or after the visualization.

Verfahren und Vorrichtung zur Verarbeitung von Messdaten mit einer Vielzahl unabhängiger Stichproben

Method for statistically analysing functional imaging data (fmri data) in real-time using a general linear model

Verfahren zur statistischen analyse von funktionellen bildgebungsdaten (fmri-daten) in echtzeit mittels des general linear model

Die vorliegende Erfindung betrifft ein Verfahren sowie eine Vorrichtung zur Verarbeitung von Messdaten, die sich aus mehreren durch zeitlich aufeinander folgende Messungen entstandenen Datensätzen mit einer Vielzahl unabhängiger Stichproben zusammensetzen. Für einen Vergleich des zeitlichen Verlaufs jeder erfassten Stichprobe mit dem zeitlichen Verlauf einer Modellfunktion unter Einsatz des General Linear Model werden die erforderlichen Berechnungen in einer sich aus der zeitlichen Abfolge der Messungen ergebenden Reihenfolge der Datensätze jeweils datensatzweise, d.h. von Datensatz zu Datensatz, durchgeführt und als Zwischenergebnis gespeichert, indem die Zwischenergebnisse des jeweils unmittelbar vorangehenden Datensatzes mit den neuen Berechnungen aktualisiert werden. Mit dem vorliegenden Verfahren lässt sich der Vergleich Speicherplatz sparend, effizient und schnell berechnen.

Systems and methods for providing an updated machine learning algorithm

Systems and methods for providing updated machine learning algorithms are provided. An exemplary system comprises an interface configured to:obtain, from a model aggregator device, a machine learned algorithm, the machine learned algorithm being configured to extract medical findings from medical data sets;obtain, from the model aggregator device, a natural language processing algorithm, the natural language processing algorithm being configured to extract indications of medical findings from text data; andobtain, form one or more local databases, medical data sets and associated medical reports.Further the exemplary system comprise a computing unit with:- a data parsing module configured to query the one or more local databases for a set of medical data sets and a set of associated medical reports, the medical data sets each comprising at least one medical finding;- a reference data generation module configured to generate indications of at least a part of the medical findings by applying the natural language processing algorithm to the medical reports;- a data gating module configured to determine whether to allow a local data item comprising one of the medical data sets and a corresponding indication to be incorporated into a training process of the machine learning algorithm; and- a training module configured to update the machine learned algorithm.

Systeme und Verfahren zur Bereitstellung eines angepassten Algorithmus für maschinelles Lernen

Es werden Systeme und Verfahren zur Bereitstellung aktualisierter Algorithmen für maschinelles Lernen bereitgestellt. Ein beispielhaftes System umfasst:- ein Datenanalysemodul, das dazu ausgebildet ist, eine oder mehrere lokale Datenbanken nach einem Satz medizinischer Datensätze und zugehöriger medizinischer Berichte abzufragen, wobei die medizinischen Datensätze jeweils mindestens eine medizinische Auffälligkeit enthalten;- ein Referenzdaten-Erzeugungsmodul, das dazu ausgebildet ist, Anzeichen zumindest eines Teils der medizinischen Auffälligkeiten dadurch zu generieren, dass es einen Algorithmus zur Verarbeitung natürlicher Sprache auf die medizinischen Berichte anwendet;- ein Datenfiltermodul, das dazu ausgebildet ist, festzustellen, ob ein lokales Datenobjekt, das einen der medizinischen Datensätze und ein zugehöriges Anzeichen umfasst, in einen Trainingsprozess des Algorithmus für maschinelles Lernen zuzulassen ist; und- ein Trainingsmodul, das dazu ausgebildet ist, den Algorithmus für maschinelles Lernen im Rahmen des Trainingsprozesses anzupassen.

磁気共鳴撮像により灌注測定を実行する方法

(57)【要約】 【課題】 磁気共鳴撮像により、誤差のない灌注測定が 行える方法を提供する。 【解決手段】時系列的に検査対象物の磁気共鳴装置の撮 像ボリュウム内に位置決めされる撮像範囲の像データセ ットを発生し、その時系列内で生ずる、撮像ボリュウム に関する撮像範囲の位置変化を捕捉し、かつ捕捉された 位置変化に相応して像データセットへの位置変化の作用 の補正を、時間的に全てのデータセットの発生終了後 に、像データセットの補正により行う。

磁気共鳴装置の作動方法

(57)【要約】 【課題】 磁気共鳴装置の撮像体積に対する被検体の撮 像すべき範囲の位置変化を高い精度で捕捉する。 【解決手段】 データ点を有する少なくとも１つの参照 データセットが発生され、ｋ空間内のデータ点３２が少 なくとも球表面３２の部分面上にその部分面を面合同に 覆って配置され、部分面が少なくとも球表面３２の大円 の周りに位置変化の最大期待すべき角度範囲に相応して 広がり、位置変化を捕捉するため少なくとも１つの軌道 ナビゲータエコーのデータセットが参照データセットと 比較される。

磁気共鳴装置の作動方法

(57)【要約】 【課題】 撮像範囲の位置変化をｋ空間マトリックスの 全取得時間の期間中に求め、それから生ずる像アーティ ファクトを補正可能にする。 【解決手段】装置の撮像ボリューム内に位置決めされて いる検査対象物の撮像範囲の複素数値により占められて いるｋ空間マトリックスを取得し、撮像範囲の少なくと も予め定め得る点に対して、撮像ボリュームに関するそ れらの並進運動を、取得中に時間依存性により記述し得 る運動モデルを作成し、ｋ空間マトリックスの対称点に 関して点対称にｋ空間マトリックス内に配置されている ｋ空間マトリックスの少なくとも２つの値の位相値によ り運動モデルを決定し、両方の値の取得時点の間に運動 が行われなかった場合にはこれらは互いに複素共役関係 にあり、並進運動が行われた場合にはこれらは相応に位 相値に鏡映し、決定された運動モデルに相応してｋ空間 マトリックスの値を補正する。

Method for use in generating a computer-based visualization of 3D medical image data

A method for use in generating a computer-based visualization of 3D medical image data is described. The method includes receiving 3D medical image data and performing a selection process to select first image data forming a first portion of the 3D medical image data, the first image data representing a first anatomical object of a given type. An analysis process is performed on the first image data, a parameter of the analysis process being based on the given type of the first anatomical object. Based at least in part on a result of the analysis process, a visual parameter mapping for the first portion is determined, for use in a rendering process for generating a visualization of the 3D medical image data. Also described is a method of generating a computer-based visualization of 3D medical image data and an apparatus for performing the methods.