Patent application number | Description | Published |
20120281808 | METHOD FOR GEOMETRICALLY CORRECT ASSOCIATION OF 3D IMAGE DATA OF A PATIENT - In a method for geometrically correct association of at least two 3D image data of a patient, a marker field that defines a reference and is dimensionally stable and can be imaged in an x-ray image, is fixed in a stationary position relative to the patient. An x-ray apparatus is brought into first and second 3D acquisition positions. In each of the 3D acquisition positions, the x-ray apparatus acquires first 2D x-ray images for the associated 3D image data in various positions. The first and second 3D acquisition positions are selected such that a second 2D x-ray image that includes an image of at least a portion of the marker field is acquired in at least one respective position. The respective attitudes of the 3D acquisition position and the 3D image data in the reference system are determined from the image of the marker field in the second 2D x-ray image. First and second image data are geometrically correctly associated with one another according to their respective attitude. | 11-08-2012 |
20120289821 | C-ARM INTEGRATED ELECTROMAGNETIC TRACKING SYSTEM - A medical imaging system and a method electromagnetically track a position of structures with the medical imaging system and a C-arm arrangement. The medical imaging system contains a C-arm, a gantry, and at least one electromagnetic field generator assembly with at least one electromagnetic field generator which interacts with an electromagnetic sensor from receiving the electromagnetic radiation. Preferably, the electromagnetic sensor is positioned within a region of surgical interest in a patient. The electromagnetic field generator is directly embedded into the C-arm. | 11-15-2012 |
20120289826 | METHOD FOR LOCALIZATION AND IDENTIFICATION OF STRUCTURES IN PROJECTION IMAGES - A method for localization and identification of a structure in a projection image with a system having a known system geometry, includes acquiring a preoperative computer-tomography or CT image of a structure, preprocessing the CT-image to a volume image, acquiring an intraoperative two dimensional or 2D X-ray image, preprocessing the 2D X-ray image to a fix image, estimating an approximate pose of the structure, calculating a digitally reconstructed radiograph or DRR using the volume image, the estimated pose and the system geometry, and calculating a correlation between the generated DRR and the fix image, with a correlation value representing matching between the generated DRR and the fix image. The method significantly decreases the number of wrong-level surgeries and is independent of the surgeon's ability to localize and/or identify a target level in a body. | 11-15-2012 |
Patent application number | Description | Published |
20130066196 | DETERMINING AND VERIFYING THE COORDINATE TRANSFORMATION BETWEEN AN X-RAY SYSTEM AND A SURGERY NAVIGATION SYSTEM - The device enables the detection of positions of the navigation marking elements on a reference star by way of at least two projection images taken by an X-ray system at different pivoting angles of a C-arm. The positions of the navigation marking elements on the reference star are also calculated by a navigation system tracking camera. The transformation from the coordinate system of the navigation system into the coordinate system of the X-ray system is calculated from the position of the reference star detected by the X-ray system and the position of the reference star detected by the tracking camera. The navigation marking elements are located outside of the volume which is reconstructed by way of the imaging process in order to prepare tomographic images. The positions of the navigation marking elements are determined from two-dimensional projections. All the navigation marking elements need only be detected by at least two projection images. | 03-14-2013 |
20130177230 | IMPLANT POSE DETERMINATION IN MEDICAL IMAGING - The pose of an implant represented in a medical image is determined from the medical image. The x-ray image of the implant is compared to a database of the implant viewed at different poses (e.g., viewed from different directions). The implant pose associated with the best match indicates the pose of the implant in the x-ray image. | 07-11-2013 |
20140003576 | SUPPORTING DEVICE AND INTRA-OPERATIVE IMAGING DEVICE HAVING THE SUPPORTING DEVICE | 01-02-2014 |
20140003700 | Fused-Image Visualization for Surgery Evaluation | 01-02-2014 |
20140016743 | METHOD FOR DETERMINING A DISTANCE BY X-RAY IMAGING, AND X-RAY DEVICE - A method for determining a distance between a first point and a second point on an object under examination inside the body of a person under examination by way of x-ray imaging by an x-ray device. The method includes the recording of x-ray images at different relative positionings of the x-ray device, which contain the first and the second point respectively. The relative positionings are substantially shifted in relation to one another in parallel to a central beam. Stereo reconstruction is carried out to define a 3D position of the first point and of the second point. The distance between the first point and the second point is determined from the 3D position of the first point and the 3D position of the second point. | 01-16-2014 |
20140051994 | METHOD FOR DETERMINING A TARGET POSITION FOR A MEDICAL PROCEDURE - A method for determining the location, in a coordinate system, of a target position for an invasive medical procedure on a patient. An entry mark that defines the coordinate system and indicates an entry position for the procedure is affixed to the patient. A site marker, which can be identified in a radioscopy image, is fixed in a known relative location in the coordinate system. At least two 2D radioscopy images of the patient, which both depict the respective site marker and the target position, are recorded from different recording directions. The location of the target position in the coordinate system is determined from the representation of the target position and from the representation of the site marker in the 2D radioscopy images and from the relative location of the site marker in the coordinate system. | 02-20-2014 |
20140267255 | METHOD FOR ARTIFACT-FREE RENDERING OF METAL PARTS IN THREE-DIMENSIONALLY RECONSTRUCTED IMAGES - A method for artifact-free rendering of metal parts in 3D three-dimensionally reconstructed images of an examination object in a patient, includes recording a 3D scan without metal parts producing a 3D data record, recording n projection images with metal parts from known locations or directions, 2D/3D registering bone in the n projection images with the 3D data record, 2D/3D registering of the metal parts from the n projection images and 3D models of the metal parts, calculating locations of the metal parts in the 3D data record based on the 2D/3D registration thereof, and superposing all current locations of the metal parts in the 3D data record. There is no need for a new 3D scan to check current screw positions. The 3D representation of screw positions in the bone is performed without artifacts, enabling reliable assessment of screw locations, for example in spinal column surgery. | 09-18-2014 |
20140324182 | CONTROL SYSTEM, METHOD AND COMPUTER PROGRAM FOR POSITIONING AN ENDOPROSTHESIS - A computer-aided control system, a computer-based method and a computer program or a computer program product control an implant positioning of an endoprosthesis. Planning data are generated on the basis of a preoperatively acquired first image data set. The endoprosthesis is provisionally positioned intraoperatively. A second image data set representing the current ACTUAL position of the endoprosthesis is thereupon acquired. Control data are thereupon generated, the control data serve for the fine positioning of the endoprosthesis and being based on a comparison between DESIRED and ACTUAL states. | 10-30-2014 |
20140328460 | METHOD AND DEVICE FOR ASSISTING IN THE TREATMENT OF BONE FRACTURES - A bone fracture is treated by employing a database with comparison data records. The records each include at least one 3D image data record of at least one bone. Each comparison data record is assigned to an examination object, into which a comparison implant was implanted prior to recording the 3D image data record. A two-dimensional x-ray image of a target bone is generated. A 2D/3D registration of the x-ray image with 3D image data records is effected and a deviation value is calculated for each comparison data record. A reference data record is determined by selecting the comparison data record that includes the 3D image data record with the lowest deviation value. An implantation parameter is determined which describes a parameter of the implant and/or of a fastening element for fastening the implant, using the reference data record and/or displaying data of the reference data record on a display. | 11-06-2014 |
20140340401 | METHOD FOR GENERATING DISPLAY IMAGE DATA - A method generates a 3D image data set of a volume to be examined, in which at least part of a foreign object is positioned. A set of 2D projection images is recorded, the image regions which present the foreign object are detected in at least two 2D projection images of the set. The image regions which present the foreign object are segmented in the at least two 2D projection images. A marking assigned to the segmented image regions is incorporated in the at least two 2D projection images. The 2D projection images, including the at least two 2D projection images having the incorporated markings, are used for the reconstruction of a 3D image data set containing the marking. | 11-20-2014 |
20140357985 | METHOD FOR VISUAL ASSISTANCE WHEN FIXING AN IMPLANT, AND TARGET APPARATUS - A user is visually assisted when fixing an implant with a locking element in, or on, a bone. The location of a guide instrument for guiding the locking element relative to the implant is set by a target apparatus. The implant can be rotated and/or positioned by moving the target apparatus. The guide instrument carries at least one x-ray marker. An x-ray device records an x-ray image of the target region of the locking element and the x-ray marker. The orientation and position of a projected straight line, which forms a projection of a longitudinal axis of the guide instrument in the image plane, is determined from the position and/or form of the image of the x-ray marker. A superposed illustration is calculated of the x-ray image with a graphical element indicating the orientation and position of the projected straight line and the superposed illustration is output on a display. | 12-04-2014 |
20150065866 | METHOD FOR REPOSITIONING A MOBILE IMAGING SYSTEM, IMAGE CAPTURING UNIT AND OPTICAL MARKER - A method for repositioning a mobile imaging system includes:
| 03-05-2015 |