Abstract: Provided is a method and arrangement for registering first image data of a first stream with second image data of a second stream. The image data include image information about at least one organ, wherein a shape and/or position of the organ is cyclically changing: Each of the streams include a series of images of the at least one organ at a plurality of different discrete stages of the cyclic change so that each image corresponds to one of the discrete stages. A phase variable defines the stage of the cyclic change and a phase value of the phase variable is assigned to each image within each stream, thereby defining the discrete stage represented by the image. A registration is determined for a pair of images selected by choosing or interpolating images from the first stream and second stream to which a same phase value is assigned.

Abstract: The present invention pertains to a method for image-assisted navigation, wherein an imaging specification for imaging a point in a three-dimensional system of coordinates in a point in a two-dimensional system of coordinates is determined, wherein a location of the imaging device is detected, and wherein the location of the imaging device is displayed in the two-dimensional reference image (RB).

Abstract: A system and method are provided for displaying images of first and second image data in which geometry data is transferred from an ultrasound imaging detector to an image combination device in addition to first image data to reduce the need for calibration and registration.

Abstract: The invention relates to a method of registering ultrasound image data of an object and second image data of the object, wherein the second image data are three-dimensional (3-D) image data. Sets (first sets IUS) of the ultrasound image data are obtained, wherein each set of ultrasound image data consists of ultrasound image data of locations within a single plane of a coordinate system of the ultrasound image data. Sets (second sets IEX) of 2-D image data from the second image data are extracted, wherein each set of 2-D image data consists of image data of locations within a single cut plane of a coordinate system of the second image data (unit 41). One of the first sets (IUS) is compared with one of the second sets (IEX) and a measure of similarity between the first set (IUS) and the second set (IEX) is automatically generated (unit 42). The similarity is optimised by varying the first set (IUS) and/or the second set (IEX) to be compared (unit 43).

Abstract: A method and arrangement for setting a relative position of a radiation device and a patient. The invention relates to the use of radiation therapy for the targeted, selective destruction of tumors.