Abstract: A matching transformation is determined for matching a patient image set of images of an anatomical body structure of a patient with an atlas image set of images of a general anatomical structure including anatomical atlas elements. Atlas spatial information containing spatial information on the general anatomical structure, and element representation information are obtained. The element representation information describes representation data sets which contain information on representations of the plurality of atlas elements in the atlas images to be determined are obtained, and also describes a determination rule for determining respective representation data sets for respective atlas elements in accordance with different respective parameter sets. Patient data is acquired by acquiring the patient image set and the parameter sets which are respectively associated with the images of the patient image set.

Abstract: A matching transformation is determined for matching a patient image set of images of an anatomical body structure of a patient with an atlas image set of images of a general anatomical structure including anatomical atlas elements. Atlas spatial information containing spatial information on the general anatomical structure, and element representation information are obtained. The element representation information describes representation data sets which contain information on representations of the plurality of atlas elements in the atlas images to be determined are obtained, and also describes a determination rule for determining respective representation data sets for respective atlas elements in accordance with different respective parameter sets. Patient data is acquired by acquiring the patient image set and the parameter sets which are respectively associated with the images of the patient image set.

Abstract: A data processing method for calculating a medical display image to be displayed on a display device, comprising the steps of acquiring at least one image dataset representing a medical image of a patient, acquiring a patient-specific information dataset representing patient-specific information and calculating the display image from the at least one image dataset on the basis of a template, the template being selected from a plurality of templates in accordance with the acquired patient-specific information.

Abstract: The disclosure is directed to a radiotherapy system having a treatment device for treating a treatment body part of a patient with a treatment beam arrangement. The treatment device is included with a couch for placing the patient and includes a medical imaging devices for outputting three-dimensional cone-beam computed tomography images to a computer, and a medical imaging x-ray device for generating at least one x-ray image, if the patient is placed on the couch for treatment, and for outputting at least one x-ray image to the computer. The system will output movement control data to control the relative position of the treatment body part relative to the treatment beam if it is determined there is the offset between the position of the treatment body part relative to the bony structure as described by the image data and the position of the treatment body part relative to a bony structure.

Abstract: Disclosed is a method for determining a deviation of the position of an anatomical body part relative to a predetermined position defined by a radiation treatment plan. A monitoring image is taken of the anatomical body part at the instant that a predetermined control point defined in the treatment plan has been reached. The monitoring image is compared to a simulated image simulated from a planning image of the anatomical body from the perspective of a monitoring camera used to generate the monitoring image. The comparison allows for a determination of whether there is a positional deviation.

Abstract: A matching transformation is determined for matching a patient image set of images of an anatomical body structure of a patient with an atlas image set of images of a general anatomical structure including anatomical atlas elements. Atlas spatial information containing spatial information on the general anatomical structure, and element representation information are obtained. The element representation information describes representation data sets which contain information on representations of the plurality of atlas elements in the atlas images to be determined are obtained, and also describes a determination rule for determining respective representation data sets for respective atlas elements in accordance with different respective parameter sets. Patient data is acquired by acquiring the patient image set and the parameter sets which are respectively associated with the images of the patient image set.

Abstract: The invention is in particular directed to a data processing method for use in computer-assisted surgery, comprising the following steps: a) providing marker data which describe a spatial arrangement of at least one marker device and/or a change in a relative spatial arrangement of at least two marker devices (5, 6, 7); b) providing condition data which describe a condition for the spatial arrangement of at least one marker device and/or a condition for the change in the relative spatial arrangement of the at least two marker devices (5, 6, 7); and c) controlling a control flow of the data processing method on the basis of the marker data and the condition data.

Abstract: The invention relates to a surgical instrument comprising a handle portion or mounting portion and a functional portion and/or tip, wherein a display device is provided on the instrument and includes or enables displays which serve to assist in image-guided and/or navigation-assisted surgery. It also relates to a method for navigating a surgical instrument, wherein its position is determined and tracked by means of a medical tracking system and the position data is processed within the framework of medical navigation by means of a medical navigation system, wherein displays for navigation assistance and/or for assisting in image-guided surgery are provided on the instrument or on an element which is positionally assigned to the instrument or fastened to the instrument.

Abstract: The invention is directed to a method for controlling a process of monitoring the position of at least a part of a patient's body (1) during a radiation treatment, the method comprising the following steps: a) providing an energy value which is dependent on the radiation energy applied to the patient's body (1); b) controlling the time at which the monitoring process is performed, in accordance with the energy value.

Abstract: A medical data processing method of determining a spatial relationship between a marker device (1, 1?, 1?, 20) and a resection plane (50, 120) associated with an anatomical structure (5, 12) of a patient's body, the marker device (1, 1?, 1?, 20) being video-detectable by an imaging unit (6), the method being constituted to be executed by a computer and comprising the following steps: a) acquiring imaging unit position data describing a predetermined spatial relationship between the imaging unit (6) and the resection plane; b) acquiring marker device position data describing a spatial relationship between the marker device (1, 1?, 1?, 20) and the imaging unit (6) based on imaging the marker device (1, 1?, 1?, 20) with the imaging unit (6) in order to generate an orientation-dependent image appearance of the marker device (1, 1?, 1?, 20); c) determining, based on the imaging unit position data acquired in step a) and the marker device position data acquired in step b) and based on the orientation-dependent imag

Abstract: The present invention relates to a method for calibrating a projection device, in particular a hand-held projection device, in a navigational environment for medical purposes, comprising the steps of: providing a detection device (1) configured to detect light emitted by the projection device (2); determining the spatial position of the detection device (1); projecting a known projection (3), comprising an area (4) configured to stimulate the detection device (1), towards the detection device (1) by means of the projection device (2); determining the position of the projection device (2), particularly in relation to the detection device (1) when the area (4) stimulates the detection device (1).

Abstract: The present invention relates to a method for determining the mechanical axis of a bone using an electronic device which is rigidly attached to the bone and comprises a video camera, wherein: the mechanical axis is determined from the positions of two points which define the mechanical axis; the first of the two points is determined as the center of rotation when the bone is pivoted about the first point, the center of rotation being determined from an output signal of the camera which captures a stationary marker device; and the second point is the exit point of the mechanical axis on the outer surface at the opposite end of the bone to the first point.

Abstract: The present invention relates to a computer-implemented medical method for improving the suitability of a tracking structure for tracking by tessellating the tracking structure into a plurality of sub-tracking structures. The invention also relates to a computer configured to execute a program corresponding to the method and a medical system for improving the suitability of a tracking structure for tracking, the system including the aforementioned computer.

Abstract: The present invention relates to a marker for optical medical navigation, comprising a structure (1) with at least one recess (3), and at least one supporting element (2), wherein each supporting element (2) is configured to be accommodated within a particular recess (3) and to support at least one optically detectable element (4), and wherein each recess (3) has a first opening (5) which allows a supporting element (2) to be introduced into the recess (3), wherein the recess (3) has at least two second openings (6) which are different from the first opening (5), wherein each of the at least two second openings (6) is configured to allow the at least one optically detectable element (4) supported by the supporting element (2) to be optically detected.

Abstract: The invention relates to an instrument for use in computer guided surgery. The instrument includes a shaft and a reference element adapter, wherein the reference element adapter is directly couplable to the shaft and rotatable about the shaft. A selectively operable mechanical retainer provides retention of the reference element adapter to an instrument shaft adapting interface of the instrument shaft. The instrument also includes a reference element orientating mechanism arranged at an interface between the instrument shaft adapting interface and the reference element adaptor. The reference element orienting mechanism is capable of fixing at least one angular position of the reference element. The instrument also includes a grip piece interface on the instrument shaft, and a grip piece is selectively couplable to the grip piece interface.

Abstract: The invention relates to a method for visually assisting the alignment of a medical instrument, wherein the instrument is visually displayed on an image output in a positional relationship to a part of a patient's body by means of a medical navigation system, wherein an orientation aid is displayed as a virtual model shape at the instrument or in a particular positioning with respect to a characteristic part of the instrument. It also relates to a planning method for optimized instrument alignment with the aid of such an image assisting method.

Abstract: A patient positioning system for radiotherapy, comprising a device for positioning a patient within the framework of treatment planning, using image detection and/or carrying out radiation treatment, comprising a patient bed on which a patient is positioned, wherein means are provided by which the same bed may be arranged both on a planning couch for image detection within the framework of treatment planning as well as on a radiotherapy table, and by providing a reference means on the patient bed by which the position of the immobilized patient or of a marked radiation target is determined with respect to the patient bed. Within this framework, a corresponding method is also provided, as well as an adjusting means for the transport and the bed.