摘要:
A system and method for registering pre-operative images of an object with an intra-operative image of the object is disclosed. Prior to an operative procedure, Digitally Reconstructed Radiographs (DRRs) are generated for the pre-operative images of each individual patient. Signatures are extracted from the DRRs. The signatures are stored in a knowledge base. During the operative procedure, a signature is extracted from the intra-operative image. The intra-operative signature is compared to the stored pre-operative signatures. A pre-operative image having a best signature match to the intra-operative signature is retrieved. The retrieved pre-operative image is registered with the intra-operative image.
摘要:
A system and method for registering pre-operative images of an object with an intra-operative image of the object is disclosed. Prior to an operative procedure, Digitally Reconstructed Radiographs (DRRs) are generated for the pre-operative images of each individual patient. Signatures are extracted from the DRRs. The signatures are stored in a knowledge base. During the operative procedure, a signature is extracted from the intra-operative image. The intra-operative signature is compared to the stored pre-operative signatures. A pre-operative image having a best signature match to the intra-operative signature is retrieved. The retrieved pre-operative image is registered with the intra-operative image.
摘要:
A method for calibrating real and virtual views includes tracking a calibration screen, wherein a real reference point, generated by a real reference point generator, is projected on the calibration screen, aligning a view of a virtual reference point to a view of the real reference point in a display, wherein the real reference point generator and the display have a fixed relative position, determining a point correspondence between the virtual reference point and the real reference point, and determining one or more parameters for rendering a virtual object in the real scene.
摘要:
A method for calibrating real and virtual views includes tracking a calibration screen, wherein a real reference point, generated by a real reference point generator, is projected on the calibration screen, aligning a view of a virtual reference point to a view of the real reference point in a display, wherein the real reference point generator and the display have a fixed relative position, determining a point correspondence between the virtual reference point and the real reference point, and determining one or more parameters for rendering a virtual object in the real scene.
摘要:
There is provided a method for augmented reality guided instrument positioning. A viewpoint is established, from which a line of sight to a point on a target defines a path for an instrument to follow during a positioning of the instrument to the point on the target. The instrument is aligned along the line of sight to the point on the target.
摘要:
The invention relates to a method and a device for generating a virtual installation model (2) as an image of a real installation (1). As a database therefor, digital picture data (4) representing pictures of a real installation (1) on the one hand and installation components (13) of a component library (6) on the other hand are used. The data of the installation components as well as the digital picture data (4) of the real installation (1) is evaluated by means of an image analysis (5). Based on this analysis, the identified installation components (13) are assigned to the virtually generated installation model (2). The virtual image of the real installation thus created serves to document the actual structure of the installation/facility, to simplify failure analysis, e.g., in areas that are difficult to access, and/or to operate and monitor the installation/facility. In addition to geometric data, functional data, etc. of the installation components are also stored.
摘要:
A diagnostic device for computer tomography and nuclear imaging of a body is provided. The device includes at least one movable robot arm, an x-ray source, and a detector for nuclear radiation. Further, a method for the 3D imaging of a body is provided. The method includes irradiating the body by a moving x-ray source, and acquiring nuclear emission data via readings from a moving nuclear detector, supervising the poses of the x-ray source and the nuclear detector, synchronizing the readings from the nuclear detector and the x-ray source with their respective poses, and calculating 3D images by using the acquired information from the x-ray source and from the nuclear detector.
摘要:
A system and method for tracking a position of an interventional medical device configured to be deployed into a subject during a medical procedure. An anatomical dataset of the subject is acquired while at least one electrical sensor is disposed along the interventional medical device. A feedback signal is generated from the electrical sensor and is processed and analyzed to identify positional information of the interventional medical device. A position of the interventional medical device with respect to the anatomical dataset is identified and the position of the interventional medical device with respect to the anatomical dataset is shown on a display.
摘要:
A virtual penetrating mirror device for visualizing virtual objects in endoscopic applications, having an interactive virtual mirror (1), a 3D or 4D medical image of a patient's anatomy (52), a displaying device (21), a display of displaying device (22), a tracking system (4) and a tracked endoscopic camera (2), is provided by means of presenting the interactive virtual mirror (1), in a common coordinate system with the 3D or 4D medical image of the patient's anatomy (52), that provides full integration and combined visualization of the reconstruction of the 3D or 4D medical image of the patient's anatomy (52), the endoscopic image (26) and the virtual mirror (1) on the display of displaying device (22).
摘要:
A method is disclosed for combining a first image and a second image of an examination object, which images have an overlap region. A corresponding magnetic resonance scanner is also disclosed. In at least one embodiment, a superposed image is determined in the overlap region as a weighted superposition of the first image and the second image with a spatially variable weighting function. The first image and the second image are transformed on the basis of a comparison of the first image and/or the second image with the superposed image.