Abstract: A computer-implemented method for providing a three-dimensional (3D) results data set includes: acquiring projection maps of an object under examination which are captured from various projection directions by a medical X-ray device; providing an initial projection matrix based on a static model of the X-ray device; providing a further projection matrix by applying a trained function to input data, wherein the input data is based on the initial projection matrix and the projection maps, wherein at least one parameter of the trained function is adapted based on an image quality metric and/or a consistency metric, and wherein the further projection matrix is provided as output data of the trained function; and providing the 3D results data set through reconstruction from the projection maps by the further projection matrix.

Abstract: Angiographic recordings are to be made more informative. To this end, a method for spatiotemporal fusion of time-resolved angiographic data sets is proposed. Respective 4D reconstructions are obtained from angiographic 3D data sets acquired from contrast agents administered at different sites. In both 4D reconstructions, a common vascular region is identified. For each contrast agent bolus, the corresponding time point or time course in the common vascular region is determined. Finally, the two 4D reconstructions are synchronized and fused.

Abstract: A method for providing a result data set includes: capturing a first medical image data set that maps an object under examination within a first temporal phase; capturing a second medical image data set that maps a flow of contrast agent in the object under examination within a second temporal phase in a time-resolved manner; identifying multiple partial image data sets in the second image data set, wherein the partial image data sets in each case map one of multiple physiological subphases within the second temporal phase; and providing the result data set including multiple subtraction image data sets, wherein each subtraction image data set of the multiple subtraction image data sets is determined based on the first medical image data set and a respective partial image data set of the multiple partial image data sets in the second medical image data set.

Abstract: A system for monitoring a physiological state of an object under examination in remotely controlled procedures includes a remote control unit for remote control of a remote manipulation unit, the remote manipulation unit for performing a procedure step, a capture unit for capturing state data of the object under examination, and a provider unit for classifying the state of the object under examination. When an expected state is present, the remote manipulation unit performs the procedure step. When a deviating state is present, the provider unit provides a remote signal to the remote control unit and a local signal to the output unit, the output unit outputs to local operating personnel a first workflow notice, and the remote control unit adjusts the remote control of the remote manipulation unit, outputs a second workflow notice to the remote operating personnel, and/or provides an alternative remote control signal.

Abstract: A method for monitoring remote control suitability includes capturing an instantaneous suitability parameter of a member of remote operating staff. The member of remote operating staff is equipped to remotely control a medical device by a remote control unit. The remote control unit is configured to provide a control signal to the medical device. The suitability parameter is provided by the remote control unit and/or a sensor unit for capturing the member of remote operating staff. The method includes identifying, based on the suitability parameter, whether a reduction in the suitability of the member of remote operating staff exists. In the case of affirmation, the medical device is provided with an alternative control signal, and in the case of negation, the medical device is provided with the control signal.

Abstract: A method for managing a virtual patient model of a patient for a series of treatment and/or examination procedures occurring over time, wherein at least at a first time point at which the patient is described by first patient parameters, the patient model describes at least the surface of the patient at the first time point, wherein at least at a second later time point at which the patient is described by second patient parameters, the patient model is extended by at least one model transformation using the first and second patient parameters for describing at least the surface of the patient at the second time point.

Abstract: A method for providing a procedural signal includes receiving an item of procedural information including an item of information about at least one procedural step that has been carried out on an object under examination before the beginning of the method, and an item of information about at least one planned procedural step. A physiological patient parameter is received from the object, which has been acquired via a sensor unit during and/or subsequent to the procedural step that has been carried out. The method includes identifying, based on the patient parameter and/or a change in the patient parameter whether the at least one procedural step has been tolerated by the object under examination. A procedural signal is provided that, in the negative, includes an item of information for adapting the at least one planned procedural step based on the procedural information and, in the affirmative, includes approval of the at least one planned procedural step.

Abstract: A method for actuating an X-ray device during robot-assisted navigation of at least two objects introduced into a body, such as a hollow organ, of a patient by at least one robotic system, includes providing a first selection criterion for selecting one of the objects, and providing a second selection criterion for selecting one of the objects. One of the at least two objects is selected based on the first selection criterion and the second selection criterion, and recording parameters of the X-ray device are automatically set, such that the selected object in an X-ray image to be recorded is highlighted compared to the at least one other object. The selected object may be highlighted with respect to image quality, image flavor, positioning on the X-ray image, and/or a collimator setting of a collimator of the X-ray device. An X-ray image is recorded with the set recording parameters.

Abstract: The disclosure relates to a method for providing a result dataset, a method for providing a trained function, a provisioning unit, a medical imaging device, and a computer program product. The method for providing the result dataset includes capturing medical image data, wherein the medical image data maps a temporal change in an anatomical object in an examination object in a spatially and temporally resolved manner. The method further includes identifying at least one inhomogeneously deforming region of the anatomical object based on the image data and providing the result dataset based on the image data, wherein the result dataset has a dedicated map and/or at least one deformation parameter of the at least one inhomogeneously deforming region.

Abstract: Angiographic recordings are to be made more informative. To this end, a method for spatiotemporal fusion of time-resolved angiographic data sets is proposed. Respective 4D reconstructions are obtained from angiographic 3D data sets acquired from contrast agents administered at different sites. In both 4D reconstructions, a common vascular region is identified. For each contrast agent bolus, the corresponding time point or time course in the common vascular region is determined. Finally, the two 4D reconstructions are synchronized and fused.

Abstract: To enhance safety of interventional procedures, a method for monitoring an interventional procedure that is carried out using an artificial object, such as a catheter, is provided. At least one image of the interventional procedure is acquired. The at least one image is analyzed automatically with regard to a specified anomalous feature relating to a geometry and/or a time-dependent movement parameter and/or a flow behavior of the artificial object. A complication signal is automatically generated only if the specified anomalous feature is detected in the at least one image.

Abstract: A method for monitoring an orientation of a medical object, includes identifying planning information having a planning orientation for the medical object with respect to a reference point on an anatomical object that is arranged within an examination object. The orientation of the medical object with respect to the reference point is detected using an acquisition unit. The acquisition unit includes a medical imaging device and/or an acoustic and/or optical and/or electromagnetic sensor. A deviation between the planning orientation and the orientation of the medical object with respect to the reference point is identified, and a signal is provided depending on the identified deviation.

Abstract: To improve execution of image-based tasks, such as obtaining an x-ray image with a desired contrast while using a minimum x-ray dosage, a method in which one or more acquisition parameters of an image acquisition apparatus are automatically set as a function of the task is provided. An image of a biological tissue is acquired using the image acquisition apparatus for which one or more acquisition parameters have been automatically set. The task is executed based on the image of the biological tissue.

Abstract: For a simple monitoring of a robotic system that is configured for robot-assisted actuation of a movement of a medical object in a hollow organ of a patient, the robotic system includes at least one drive system, a robot control unit, and an acoustic sensor. A method is provided and includes receiving, by the acoustic sensor, acoustic signals of the robotic system during the operation of the robotic system for moving the medical object. At least one signal pattern is recognized in the received acoustic signals. The at least one recognized signal pattern is evaluated with respect to an associated action flow of at least one component of the robotic system. The method includes checking whether the action flow is an intended action flow, and actuating an action if the action flow is unintended.

Abstract: A computer-implemented method for providing a vascular image data record includes receiving a plurality of projection-X-ray images recorded in temporal succession. The plurality of projection-X-ray images at least partially map a common examination region of an examination object. The plurality of projection-X-ray images map a temporal change in the examination region of the examination object. A change image data record is determined in each case based on at least one region of interest of the plurality of projection-X-ray images. The at least one region of interest includes a plurality of image points. The change image data record in each case includes a time-intensity curve for each of the image points. The vascular image data record is generated based on the change image data record, and the vascular image data record is provided.

Abstract: A method is for determining a three-dimensional image dataset. In an embodiment, the method includes a first X-ray dataset of the examination volume being received, the first X-ray dataset including a two-dimensional first X-ray projection of the examination volume with respect to a first projection direction; and a second X-ray dataset of the examination volume being received, the second X-ray dataset including a second two-dimensional X-ray projection of the examination volume with respect to a second projection direction. Furthermore, a first three-dimensional image dataset of the examination volume is determined based on the two-dimensional first X-ray projection and the two-dimensional second X-ray projection. An effect of overlaps of vessels with respect to the first projection direction or the second projection direction can be reduced as a result of determining the first three-dimensional image dataset based on the first X-ray dataset and the second X-ray dataset.

Abstract: An inverse visualization of a time-resolved angiographic image data set of a vascular system of a patient that was recorded by a medical imager during the flow of a contrast medium through the vascular system is provided. The time-resolved angiographic image data set of the vascular system has a temporal sequence of frames of the vascular system corresponding to the contrast medium filling process. A data set from bolus arrival times for each pixel or voxel is determined. The bolus arrival time corresponds to the time in the temporal sequence at which a predetermined contrast enhancement due to the contrast medium filling first occurs. A data set of temporally inverted bolus arrival times with respect to the contrast medium filling is determined for each pixel or voxel, resulting in a temporally inverted sequence of frames with respect to the contrast medium filling. The time-resolved angiographic image data set in the temporally inverted sequence is visualized.

Abstract: A method for providing a specification include receiving a planning dataset, wherein the planning dataset has a pre-ascertained mapping and/or a model of an examination object. The method further includes capturing selection information relating to one or more available medical object(s) and determining the specification by applying a specification function to input data, wherein the input data is based on the planning dataset and the selection information, wherein the specification has suitability information and a desired path, wherein the desired path has a plurality of spatial and/or temporal control points, which control points specify desired positionings for the one available medical object or one of the plurality of available medical objects respectively, and wherein the suitability information assesses suitability of the at least one available medical object for the desired path. The method further includes providing the specification as output data of the specification function.

Abstract: A method for providing a result data set includes: acquiring a medical image data set of an object under examination that maps a change in the object under examination on a time-resolved basis, wherein the change starts and/or ends at different locations and at least partially different points in time within the object under examination. The method further includes identifying a spatiotemporal subregion in the image data set that maps the change in a region of interest of the object under examination, wherein the subregion is delimited spatially by the mapping of the region of interest and temporally by the earliest start and/or the latest end of the change mapped at the locations within the region of interest. The method further includes providing a result data set based on the subregion of the image data set, wherein the result data set maps the region of interest on a time-resolved basis.

Abstract: Some embodiments relate to solutions to providing a result image data set. At least one embodiment is based on an input image data set of a first examination volume being received. A result image parameter is received or determined. A result image data set of the first examination volume is determined by application of a trained generator function to input data. Input data is based on the input image data set and the result image parameter, and the result image parameter relates to a property of the result image data set. A parameter of the trained generator function is based on a GA algorithm (acronym for the English technical term “generative adversarial”). Finally, the result image data set is provided. Some embodiments relate to solutions for providing a trained generator function and/or a trained classifier function, in particular for use in solutions for providing a result image data set.