Abstract: The present invention relates to a method and a system for providing an augmentation (12) of a user's visual perception of the real world, that includes a display (13, 14, 15) of two-dimensional images in conjunction with three-dimensional virtual objects (17), which are displayed with respect to each other in a clear and easily understandable manner.

Abstract: Disclosed is a computer-implemented method of planning a straight trajectory in a medical image of an anatomical structure. A template of the straight trajectory is given in an atlas and the atlas is registered with the medical image. The atlas is divided into a first area and one or more second areas, wherein the first area comprises the straight trajectory and the one or more second areas do not comprise any part of the straight trajectory. When the transformation of the atlas onto the medical image is calculated, the first and second areas are treated differently. The transformation of the first area maintains the straight shape of the trajectory and is thus restricted. The transformation of the one or more second areas is unrestricted and thus allows any kind of image registration. The template of the transformed atlas is the applied to the medical image.

Abstract: Provided is a computer-implemented medical method of irradiation treatment planning that includes an algorithm, which calculates irradiation treatment plans and at the same time considers the combination of the deliverability of the calculated RT plans, the relevancy of the calculated RT plans, and a reasonably distinctiveness between said calculated plans regarding their respective 3D dose distribution. The method automatically calculates and automatically pre-selects some of the calculated plans in steps S1 to S4, which can then be provided to the user. Moreover, in step S5 the method provides a beneficial way of automatically grouping together plans, such as by sorting the calculated and pre-selected plans. By visualizing these automatically calculated, pre-selected and grouped plans in a particular way to the user, the final plan selection by the user is facilitated in a fast, reliable and medically safe manner.

Abstract: Disclosed is a computer-implemented method of registering a digital model of an anatomical body part corresponding to a patient body part. The method encompasses input, to an augmented reality viewing device, of data defining a digital model of an anatomical body part. The model comprises at least one vertex which corresponds to a specific part of the anatomical body part. The specific part is, for example, a landmark easily identifiable for a user, such as a specific vertebra which may be found by palpation. Based on a known orientation of the augmented reality viewing device relative to the anatomical body part, visual information is displayed on a viewing unit of the augmented reality viewing device. The visual information indicates the position of the vertex as an overlay on the position of the specific part of the anatomical body part in the field of view of the augmented reality viewing device.

Abstract: A headrest for an immobilization system for immobilizing at least a part of a patient is provided. The headrest includes a supporting structure and a sheet-like formed elastic panel attached to the supporting structure on at least two opposite sides of the elastic panel. The elastic panel is configured to support at least a part of a head and/or at least a part of a neck of a patient, wherein at least a part of the elastic panel is stretchable and configured to stretch when said at least part of the head and/or neck of the patient is arranged on the elastic panel, such that a shape of said at least part of the elastic panel is formed corresponding to a shape of said at least part of the head and/or neck of the patient.

Abstract: The present invention provides a computer-implemented method for determining a treatment plan for a radiotherapy treatment including a dose distribution, the method comprising the steps of determining a transition region target thickness of a transition region comprised in a low dose target volume and adjacent to a high dose target volume. The method further comprises creating shells and determining, for each of the shells, a shell-specific upper dose constraint. The method further comprises generating, by means of an optimization algorithm, a treatment plan, the optimization algorithm constrained by a predetermined lower dose constraint in the high dose target volume, an upper dose constraint in the low dose target volume, and the respective shell-specific upper dose constraint.

Abstract: The present application relates to a computer-implemented medical method of determining a patient-specific setting of at least one imaging parameter of an imaging device. The method includes acquiring patient data describing information relating to a patient and having impact on the setting of at least one imaging parameter of the imaging device and acquiring object data describing at least one property of at least one object of interest associated with the anatomy of the patient. The imaging parameter data is determined based on the patient data, describing a patient-specific setting of the at least one imaging parameter of the imaging device.

Abstract: The present invention relates to a method encompassing acquiring data as to the geometric structure/topology of a predefined surface section as well as to an additional physical property assigned to the surface section, determining variability of the geometric structure/topology as well as of the additional physical property over the surface section, and determining from these at variabilities an expected stability of co-registering datasets describing the predefined surface section. The present invention further relates to a corresponding computer program and a corresponding system for carrying out this method.

Abstract: According to the present invention, one or more image pairs, each consisting of a fluoroscopic image and an angiographic image taken from the same position and the same viewing direction onto the patient and each being a non-stitched image, are acquired. A live fluoroscopic image is registered individually with the fluoroscopic image within the at least one of the one or more image pairs, such that the spatial relationship between the live fluoroscopic image and the at least one fluoroscopic image, and thus with the one or more angiographic images and the one or more image pairs in general, becomes known. Angiographic information representing the vascular structure can then be taken from those parts of the angiographic images within the one or more image pairs which overlap with the live fluoroscopic image and be overlayed over the live fluoroscopic image.

Abstract: Provided is a method that encompasses the determination of a virtual trajectory within a virtual representation of a patient's anatomy, wherein the trajectory is defined by a user's visual axis relative to the three-dimensional virtual representation of the patient's anatomy. The method includes acquiring image data which describes the three-dimensional virtual representation of the patient's body part, acquiring position data which describes a spatial position of a user's visual axis within a virtual-world co-ordinate system, determining visualization data based on the image data and the position data, and determining virtual-world trajectory data based on the position data.

Abstract: A computer-implemented method plans a position of a tracking reference device for referencing a position in a medical environment. The method includes a determination of avoidance regions in which a tracking reference device should not be placed so as to safeguard proper tracking of the tracking reference device and/or an instrument tracking reference device which is attached to a medical instrument. The avoidance region is a region lying, from the point of view of a tracking device for tracking the tracking reference device, in the shadow of an envelope surrounding at least one medical instrument. Additionally or alternatively, an avoidance region may lie in between the position of the tracking device and the envelope to avoid a shadowing, by the tracking reference device, of an instrument tracking reference device attached to the medical instrument.

Abstract: A method and a medical optical tracking system, wherein the medical optical tracking system is synchronized with at least one other medical optical tracking system, extraneous light signals of the at least one other optical tracking system are detected by way of a sensor or a camera used for tracking of the optical tracking system, temporal properties of the detected extraneous light signals are determined based on acquired sensor data or acquired camera images, and temporal properties of light signals generated by way of a light source of the optical tracking system and/or a measuring window of the sensor or the camera are defined, on the basis of the determined temporal properties of the extraneous light signals, such that the light signals from the light source and/or the measuring window lie in light signal pauses of the at least one other optical tracking system.

Abstract: A method and a registration device for sampling relevant surface points of a subject for a medical navigation system is presented. From a plurality of surface points of the subject, relevant surface points are accepted and non-relevant surface points are discarded. The method allows the surface geometry acquisition of a subject to be improved. For this purpose, additional information of the surface points is acquired and assigned to the respective surface point for validating each surface point.

Abstract: A computer-implemented method of generating an overlay of medical video data and overlay data is presented. The method comprising the steps acquiring, from a medical video modality, the medical video data comprising at least a first video frame and a second video frame of different points in time, t1 and t2, (step S1), analysing the acquired medical video data comprising a comparison of the video data captured by the first and the second video frames (step S2); providing initial overlay data (step S3), generating modified overlay data by adapting the initial overlay data based on a result of the analysis of the medical video data (step S4), and generating the overlay by generating a video output comprising at least medical video data originating from the medical video modality and comprising the generated modified overlay data (step S5). In a particular embodiment, the determined change over time in the first and second video frames is a spatial shift of an object imaged in the video frames.