Abstract: The device relates to a method and a device (10) for determining an irradiation plan for a particle irradiation unit (20). In the method, a target volume (6) within a test object (14; 18) is irradiated with a particle beam (16) using the particle irradiation unit (20) according to the irradiation plan. The radiation plan is determined in order to apply the energy of the particle beam (16) according to a predetermined dose distribution in the target volume (6), the target volume (6) and the predetermined dose distribution being pre-set. When determining the irradiation plan, irradiation duration is also taken into account, the irradiation plan being determined such that the irradiation duration is as short as possible.

Abstract: Evaluating a reliability of a computed tomography (CT) volume image includes acquiring a first CT volume image and a modified CT volume image that are reconstructed from scanned projection images. From the first CT volume image and the modified CT volume image, digitally reconstructed X-ray images are then calculated. A respective similarity with a corresponding one of the scanned projection images is then determined. Based on a comparison of these similarities with one another, a reliability of the CT volume images is then evaluated.

Abstract: A medical apparatus has a plurality of movable elements that are remotely displaced. A display device receives inputs for positioning the movable elements from a user. A computing device that is coupled to the display device displays a model of the medical apparatus on the display device. The movable elements are displayed in the model in accordance with the received inputs for positioning. In response to a trigger signal of the user for moving the movable elements, the movable elements are driven so as to adopt the displayed position.

Abstract: A method is provided for operating a medical imaging device when performing an imaging examination. In order to allow an improved preparation of images in the context of such an imaging examination, the method includes: providing an original image of a body region; recording an updated image of the body region; and generating a three-dimensional subsequent image from the original image and from the updated image using a previously trained artificial neural network.

Abstract: The invention describes a method of performing intraoperative navigation during a surgical procedure, which method comprises the steps of arranging a video imaging device on a radioscopic imaging apparatus; obtaining an initial radioscopic image of a target and identifying a desired trajectory in a target; determining a first position of the radioscopic imaging apparatus relative to the target for which a central image axis of a radioscopic imaging unit is aligned with the desired trajectory; positioning the radioscopic imaging apparatus to align a central image axis of the video imaging device with the desired trajectory; and showing a live video feed of the surgical procedure on a monitor to track the position of a surgical implement relative to the desired trajectory.

Abstract: A method for determining an alignment between at least two bone parts of an elongated bone system of a patient includes recording a plurality of partially spatially overlapping projection images by a recording system of an x-ray device during a translational movement of the x-ray device or the recording system in a direction of or parallel to a longitudinal axis of the bone system. Tomosynthesis image data of the bone parts is reconstructed from the recorded projection images, and an alignment angle between the at least two bone parts is determined or estimated at least partially based on the reconstructed tomosynthesis image data and/or the plurality of projection images.

Abstract: A method is disclosed for irradiation planning for the irradiation of a moving target volume located in a body with a particle beam irradiation facility by means of rescanning, which method has the steps of defining the target volume in a reference condition of the motion, dividing the target volume among a plurality of target points that can be individually approached with a particle beam, calculating a nominal dose to be deposited in each of the target points of the target volume, defining a number of rescanning passes in which each of the target points of the target volume are approached, calculating a mean motion to be expected of the target points of the target volume based on a motion model, taking into account the mean motion to be expected of the target points of the target volume in the irradiation planning in such a manner that the deviation of the expected dose deposition from the nominal dose for each target point is determined, and the nominal dose for each target point is corrected on the basis

Abstract: A method and a system for determining an angle between two parts of a bone that are twisted relative to one another about the axis of a bone shaft. The system is particularly suitable for determining the antetorsion angle of a femur. In order to determine an antetorsion angle of a bone easily intraoperatively, a method with the following steps is proposed: establishing the position of a first orientation feature assigned to a first part of the bone, in particular a femoral neck axis, using an imaging method, establishing the position of a second orientation feature assigned to a second part of the bone, in particular a condyle tangent or a condyle plane, using an imaging method, and determining the angle, in particular the femoral antetorsion angle, from the positions of the two orientation features.

Abstract: Method for irradiation planning of a target volume with a scanned particle beam, comprising the following steps: defining a target volume located in a body, subdividing the target volume into a plurality of individually approachable target points, defining a number of temporally consecutive irradiation sub-plans, dividing the target points of the target volume among the irradiation sub-plans in subsets, wherein the subsets are distributed over the entire target volume, and wherein mutually adjacent target points of the target volume are each assigned to different irradiation sub-plans.

Abstract: The invention relates to a mobile C-arm system (C1), at least comprising at least three wheels, at least two wheels each having an electric motor, wherein the electric motor has a stator (S) and a rotor (R), the stator (S) being connected to a wheel suspension (T) of the wheel and the rotor (R) being surrounded peripherally by a running wheel (L).

Abstract: A mobile C-arm system contains a main unit having a relocation apparatus for moving the main unit in a horizontal movement direction and a C-arm which is movable at least in the orbital and angular movement direction, a data processing unit having a memory for storing programs which are executed during operation, and a control and display system, connected to the main unit with operating and display elements. A plurality of sensors are provided for capturing at least part of the immediate environment of the C-arm. A control system is present, which is configured to warn against an obstacle in the intended or actual movement direction on the basis of the environment captured by at least one sensor, in dependence on an intended or actual movement of the main unit and/or at least part of the main unit in a movement direction.

Abstract: In a method of image support for a person carrying out a minimally invasive procedure with an instrument in a procedure site of a patient, one two-dimensional X-ray image respectively of the procedure site is recorded by an X-ray apparatus in at least two recording geometries implementing different projection directions and chosen specific to the procedure, in particular by the person. A three-dimensional model data set of the procedure region is reconstructed by iterative reconstruction from the X-ray images. At least one two-dimensional supporting image corresponding to one of the recording geometries is determined by incorporating at least one item of further information by re-projection of the model data set supplemented by the further information and is displayed for the user.

Abstract: The disclosure relates to a mobile X-ray device having an equipment cart that is movable on wheels and has a lifting device on which a support assembly is arranged. A C-arm is mounted to the support assembly so as to be displaceable along the circumference of the support assembly, wherein the C-arm has an X-ray source and an X-ray receiver arranged opposite the X-ray source. In order to simplify the handling of a mechanical zoom on mobile X-ray devices, a motion controller is provided by which, in any given pose of the C-arm, a movement of the C-arm is controlled in such a way that the central axis extending between X-ray source and X-ray receiver is fixed in space.

Abstract: The invention describes a method of performing intra-operative navigation during a surgical procedure, which method comprises the steps of arranging a video imaging device on a radioscopic imaging apparatus; obtaining an initial radioscopic image of a target and identifying a desired trajectory in a target; determining a first position of the radioscopic imaging apparatus relative to the target for which a central image axis of a radioscopic imaging unit is aligned with the desired trajectory; positioning the radioscopic imaging apparatus to align a central image axis of the video imaging device with the desired trajectory; and showing a live video feed of the surgical procedure on a monitor to track the position of a surgical implement relative to the desired trajectory.

Abstract: An apparatus and a method are provided for positioning an x-ray machine having an x-ray source and a detector. A second X-ray image is recorded once an x-ray apparatus has been positioned by using information of an alignment point in a first x-ray image.

Abstract: During the generation of a panoramic x-ray recording, the use of semi-transparent x-ray screens allows the patient's x-ray exposure to be reduced when partial x-ray images are created, in spite of relatively large overlapping areas between the partial x-ray images.

Abstract: A medical apparatus has a plurality of movable elements that are remotely displaced. A display device receives inputs for positioning the movable elements from a user. A computing device that is coupled to the display device displays a model of the medical apparatus on the display device. The movable elements are displayed in the model in accordance with the received inputs for positioning. In response to a trigger signal of the user for moving the movable elements, the movable elements are driven so as to adopt the displayed position.

Abstract: A method for irradiation treatment planning for a target volume to be irradiated includes specifying a plurality of data sets. The target volume to be irradiated is depicted in each data set of the plurality of data sets. The data sets differ in that the target volume has another position and/or shape. A data set is selected from the plurality of the data sets and other data sets are registered to the selected data set. The method includes forming an amalgamation of the depicted target volumes using the registrations of the other data sets to the selected data set, and determining an area at risk in the selected data set. The method includes modifying the amalgamation of the target volumes such that the area at risk is excluded from the amalgamation of the depicted target volumes. An irradiation treatment plan is calculated using the modified amalgamation of the target volumes.

Abstract: A method for producing an irradiation plan for a target volume includes preparing a modulation curve that characterizes modulation of particle numbers at target points in the target volume that lie one behind another in a direction of the beam. The method also includes determining a current position of the target volume and defining a plurality of target points that fully cover the target volume in the current position. Particle numbers are assigned to the plurality of current target points using the modulation curve.

Abstract: The present disclosure relates to a method and to an irradiation system for irradiating a moving target volume with an ion beam, in particular for tumor therapy, wherein ion radiography measurements of the target volume are performed and the irradiation for deposition purposes and for radiography purposes is performed with the same ion beam but consecutively in time by alternating the energy of the ion beam between a higher radiography energy and a lower deposition energy using, for example, a passive energy modulator proximal with respect to the patient.