Abstract: In a device for manually guided registration for overlaying two datasets, a quality of the registration is calculated and is used to generate an answerback control signal to a three-dimensionally manipulable input device, which is used to control the registration. If the quality of the registration deteriorates, the answerback signal causes the input unit to oppose further manipulation in at least one direction which would continue or increase the deterioration of the registration. The answerback signal can brake the input unit from further manipulation in at least one manipulation direction, or can cause the input unit to attempt to return to an initial or previous position.

Abstract: In the borders of a computer-aided presentation method for a 3D subject, a 2D basic image of a subject and a 2D basic presentation of a 3D volume data set of the subject are determined by a computer and momentarily output as images via an output system. The basic image and the basic presentation are thereby simultaneously output by the computer, but spatially separate from one another.

Abstract: In a medical treatment/examination device and method for the acquisition and presentation of a medical instrument introduced into a cavity organ of a patient to be examined or treated, particularly in the framework of a cardial examination or treatment with a catheter, intracorporeal registration of 2D ultrasound images of the cavity organ is undertaken using a catheter-like ultrasound acquisition device guided into the cavity organ with simultaneous acquisition of the spatial position and orientation of a 2D ultrasound image by a position acquisition system, a 3D ultrasound image dataset is generated from the 2D ultrasound image, following introduction of the instrument, the instrument is acquired in a coordinate system registered with the 3D ultrasound image dataset, and a 3D reconstruction image is generated on the basis of the 3D image dataset and is presented at a monitor, containing a positionally exact presentation of the instrument in the 3D reconstruction image.

Abstract: In a method and apparatus for the three-dimensional presentation of an examination region of a patient in the form of a 3D reconstruction image, a preoperatively acquired 3D image dataset of the examination region is employed in a medical procedure, a number of 2D ultrasound images of the examination region are acquired, the preoperative 3D image dataset is updated using the 2D ultrasound images, and the 3D reconstruction image is generated on the basis of the updated 3D image dataset.

Abstract: In a method for producing an image sequence on the basis of two volume datasets that were acquired at different points in time, a first set of deformation vectors is determined that maps image contents of the first volume dataset onto image contents of the second volume datasets, subsequently a second set of deformation vectors is determined that maps image contents of the second volume dataset onto image contents of the first volume dataset. Subsequently, sets of intermediate volume datasets are produced using attenuated deformation vectors with deformation factors Ai and Bi. Dependent on the size of the deformation factors, the image information of the individual intermediate volume datasets are shifted to different degrees in relationship to the corresponding volume dataset. Subsequently, a set of dissolve volume datasets is produced and displayed as an image sequence.

Abstract: In a device for manually guided registration for overlaying two datasets, a quality of the registration is calculated and is used to generate an answerback control signal to a three-dimensionally manipulable input device, which is used to control the registration. If the quality of the registration deteriorates, the answerback signal causes the input unit to oppose further manipulation in at least one direction which would continue or increase the deterioration of the registration. The answerback signal can brake the input unit from further manipulation in at least one manipulation direction, or can cause the input unit to attempt to return to an initial or previous position.

Abstract: A device for generating fusion images by fusioning two images, in particular medical images, comprising an image-processing computation unit (2) for fusioning the images, as well as a monitor (3) connected thereto for image output, a gray-value histogram (7, I, II) being displayable on the monitor (3) for each image of the images to be fusioned, which device is designed in such a way that, in each gray-value histogram (7, I, II) of the images to be fusioned, one or more gray-value ranges can be selected by user-controlled highlighting of one or more markings (8) on the monitor (3), as well as for generating the fusion image with the aid of the selected gray-value ranges.