Abstract: The present invention relates to a medical data processing method for identifying an entity of the nervous system, in particular the brain, of a patient, wherein the method is designed to be executed by a computer and comprises the following steps: a) acquiring target connectivity data comprising target connectivity information about the probability of a target entity being connected to other entities of the nervous system; b) acquiring candidate connectivity data comprising candidate connectivity information about the probability of at least one candidate entity being connected to other entities of the nervous system; and c) determining similarity data for each of the at least one candidate entities on the basis of the candidate connectivity data and the target connectivity data, wherein the similarity data comprise similarity information about the similarity between the candidate entity and the target entity.

Abstract: The present invention relates to a method for processing image data comprising image information about a body region of a patient, the method being at least partly executed by an electronic data processing device and comprising the following steps: d) providing the image data; e) assigning, to elements of the image information, a predetermined probability for the image information contained in the respective element representing a predetermined tissue class, wherein the predetermined probability is provided independently of information about at least part of a body which is different from the body of the patient; f) determining, on the basis of the predetermined probability and for a subset of the image information comprising a plurality of the elements, an element-specific probability for individual elements of the subset representing an element-specific tissue class.

Abstract: A data processing method for determining a path of a neural fibre in a patient, comprising the steps of: a) acquiring an atlas dataset representing an atlas of a fibrous structure comprising the neural fibre b) acquiring a nerve indicating dataset comprising information suitable for identifying the neural fibre in the patient c) calculating a matched atlas dataset by registering the atlas dataset with the nerve indicating dataset d) obtaining a generic path of the neural fibre from the matched atlas dataset e) defining a constraining volume in the patient around the generic path, the constraining volume having at least two end surfaces on which the generic path ends and f) determining the path of the neural fibre between end surfaces using a probabilistic approach, wherein the determined path lies completely within the constraining volume.

Abstract: The invention relates to a method for correcting MRI image distortion, in which a distortion correction procedure is carried out on an acquired MRI image data set (1) of a body region by graphical data processing, characterised in that: —after the MRI image data set (1) has been acquired, its distortion is determined by carrying out an image registration process for registering the acquired MRI image data set (1) to a previously available, less distorted or undistorted image data set (2) of substantially the same body region; —a transformation is determined from the image registration process; and—by applying the transformation to the MRI image data set (1), its distortion is corrected.

Abstract: The present invention relates to a method for processing image data comprising image information about a body region of a patient, the method being at least partly executed by an electronic data processing device and comprising the following steps: d) providing the image data; e) assigning, to elements of the image information, a predetermined probability for the image information contained in the respective element representing a predetermined tissue class, wherein the predetermined probability is provided independently of information about at least part of a body which is different from the body of the patient; f) determining, on the basis of the predetermined probability and for a subset of the image information comprising a plurality of the elements, an element-specific probability for individual elements of the subset representing an element-specific tissue class.

Abstract: A method for determining a location of a frontal pelvic plane of a pelvic bone includes ascertaining a position of a pubic point of the pelvic bone; generating at least one x-ray recording of the pelvic bone; ascertaining a straight line in the at least one x-ray recording that passes through the pubic point and a contour of the pelvic bone; and ascertaining the location of the frontal pelvic plane from a rear-projection of the straight line.

Abstract: A method for determining a three-dimensional form of a body from two-dimensional projection images includes producing at least one projection image of the body and producing corresponding model projection images from a generic model of the body. The body projection images and the model can be input into a computer-assisted processing unit and the generic model can be adjusted to the body by comparing image contents of the body projection images with the model projections images at a two-dimensional level only. The three-dimensional form of the body can be determined from the adjusted generic model.

Abstract: A method and apparatus for determining the position of a plane of symmetry of a three-dimensional object from at least two two-dimensional mappings, wherein the mappings are obtained from different directions. At least one characteristic line of the three-dimensional object is determined in one of the two-dimensional mappings, and at least one of the two two-dimensional mappings is morphed. The at least one characteristic line is transferred onto the other two-dimensional mapping, and the characteristic lines from the two-dimensional mappings are back-projected to obtain a three-dimensional curve corresponding to the characteristic lines. A plane of symmetry of the object is ascertained from the course of the three-dimensional curve.

Abstract: A system and method of determining a measure of accuracy of a registration mapping combining data indicative of spatial positions in a three-dimensional operating space and imaging data acquired with an imaging device located in a position and orientation in operating space is provided. A phantom is brought into a first pose, wherein the phantom is at least in partial view of the imaging device located in a second pose, the phantom comprising a marker assembly that can be imaged by the imaging device. Image data of the marker assembly of the phantom is acquired with the imaging device in the second pose. Imaged markers in the acquired image data of the marker assembly are located, and mapped markers are obtained by submitting spatial positions of the markers in the marker assembly of the phantom in the first pose to the registration mapping using the second pose as the imaging pose.

Abstract: A method for determining a location of a frontal pelvic plane of a pelvic bone includes ascertaining a position of a pubic point of the pelvic bone; generating at least one x-ray recording of the pelvic bone; ascertaining a straight line in the at least one x-ray recording that passes through the pubic point and a contour of the pelvic bone; and ascertaining the location of the frontal pelvic plane from a rear-projection of the straight line.

Abstract: A method for generating a three-dimensional model of a part of the body with the aid of a medical and/or surgical navigation system, comprising the steps of identifying to the navigation system landmarks on the part of the body that are characteristic of the model of the part of the body; obtaining at least two fluoroscopy image data sets for each of one or more predetermined, individual and delimited regions of the part of the body; ascertaining characteristic body part data by processing and combining the landmark positions and parameters of the fluoroscopy data sets; and generating a three-dimensional and positionally determined model of the part of the body from the characteristic body part data.

Abstract: A method and apparatus for determining the position of a plane of symmetry of a three-dimensional object from at least two two-dimensional mappings, wherein the mappings are obtained from different directions. At least one characteristic line of the three-dimensional object is determined in one of the two-dimensional mappings, and at least one of the two two-dimensional mappings is morphed. The at least one characteristic line is transferred onto the other two-dimensional mapping, and the characteristic lines from the two-dimensional mappings are back-projected to obtain a three-dimensional curve corresponding to the characteristic lines. A plane of symmetry of the object is ascertained from the course of the three-dimensional curve.

Abstract: A method for accurately positioning a patient for radiotherapy and/or radiosurgery, comprising the following steps: the patient is pre-positioned as accurately as possible with respect to a linear accelerator; at least two x-ray images of the patient and/or one of the parts of his body in the vicinity of the radiation target point are produced from different respective recording angles on a single image recorder; the x-ray image is spatially localized; at least one reconstructed image, corresponding to each x-ray image and deriving from a three-dimensional patient scan data set, is produced, the reconstructed images containing the desired image contents of the x-ray images when the patient is correctly positioned; and the real x-ray images are superimposed, and the positioning error is determined electronically and/or with computer guidance by way of particular landmarks and/or the intensity gradient or the contours in the two images; and the position of the patient is corrected by way of the determined posit

Abstract: A method for determining a three-dimensional form of a body from two-dimensional projection images includes producing at least one projection image of the body and producing corresponding model projection images from a generic model of the body. The body projection images and the model can be input into a computer-assisted processing unit and the generic model can be adjusted to the body by comparing image contents of the body projection images with the model projections images at a two-dimensional level only. The three-dimensional form of the body can be determined from the adjusted generic model.

Abstract: A method for automatically localizing at least one structure in a data set obtained by measurement includes predetermining a reference data set and determining a mapping function. The reference data set is mapped onto the measured data set. The method further includes transforming a reference label data set, which is assigned to the reference data set, into an individualized label data set using the determined mapping function.

Abstract: The invention relates to a method for accurately positioning a patient for radiotherapy and/or radiosurgery, comprising the following steps: the patient is pre-positioned as accurately as possible with respect to a linear accelerator; at least two x-ray images of the patient and/or one of the parts of his body in the vicinity of the radiation target point are produced from different respective recording angles on a single image recorder; the x-ray image is spatially localised; at least one reconstructed image, corresponding to each x-ray image and deriving from a three-dimensional patient scan data set, is produced, the reconstructed images containing the desired image contents of the x-ray images when the patient is correctly positioned; and the real x-ray images are superimposed, and the positioning error is determined electronically and/or with computer guidance by way of particular landmarks and/or the intensity gradient or the contours in the two images; and the position of the patient is corrected by wa