Brainlab Ag

Manfred Weiser

Robert Essenreiter

Uli Mezger

Christian O Maier

Thomas Feilkas

Jörg Uhde

Martin Edlauer

Johannes Manus

Rainer Lachner

Sebastian Stopp

Sven Flossmann

Rupert Heigl

Aleksander Bogojevic

Florian Kraus

Martin Pregler

Sven Flossman

The disclosed method encompasses moving an object such as a medical device or instrument to a desired spatial position based on tracking data provided by a tracking system. Once it is determined from the tracking data that the object has reached the desired spatial position, a projection image is generated, which is registered with the desired spatial position and shows the object. Based on the image data, it is possible to verify whether the object has actually reached the desired position, or whether the object's actual position deviates from the desired position due to errors or inaccuracies, allowing measures to be taken to compensate for these errors or inaccuracies.

Compensation of tracking inaccuracies

A medical tracking method for tracking a spatial position of a medical instrument within a medical workspace including an anatomical structure of a patient. The method includes: acquiring, using a first camera targeted on the medical workspace, instrument position data describing a spatial position of the medical instrument with respect to a first camera; acquiring, using a second camera and at least one optical tracking marker that is adapted to be recognized by the second camera, camera position data describing a spatial position of the first camera with respect to the anatomical structure, determining, based on the instrument position data and the camera position data, tracking data describing the spatial position of the medical instrument with respect to the anatomical structure; and tracking the spatial position of the medical instrument within the medical workspace using the tracking data.

Optical tracking

The invention relates to a method of relating a position (pos(selected)) of an anatomical structure () and a position of an image feature representing the anatomical structure in a medical image (), the method being constituted to be executed by a computer and comprising: a) acquiring information about the position of a medical imaging apparatus () at the beginning (pos(start)) and at the end (pos(end)) of acquiring medical image information describing a medical image () of at least a part of a patient's body () comprising the anatomical structure (), wherein the medical imaging apparatus () is moved while it is used for acquiring the medical image information; b) acquiring imaging information about a relationship between the movement of the medical imaging apparatus and the acquisition of the medical image information; c) acquiring, based on the position of the medical imaging apparatus at the beginning (pos(start)) and at the end (pos(end)) of acquiring the medical image information, information about a predominant direction of movement (z) of the medical imaging apparatus (); d) acquiring information about the position of a pointer means () in the predominant direction of movement (z); e) determining, based on the information about the position of the medical imaging apparatus () at the beginning (pos(start)) and at the end (pos(end)) of acquiring the medical image information and based on the information about the position of the pointer means () and based on the imaging information, information about a transformation between the position in the medical image () of an image feature representing the anatomical structure () and the position of the anatomical structure () in a navigation reference system ().

Wrong level surgery prevention

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. A distance measure of the imaged markers and the mapped markers is determined as the measure of accuracy of the registration mapping.

Automatic improvement of tracking data for intraoperative C-arm images in image guided surgery

The present invention relates to a method for segmenting a three-dimensional image data set, comprising the steps of:

Method for segmenting a three-dimensional image data set, corresponding computer program and corresponding system

The present application relates to a method for registering two-dimensional image data, comprising the steps of:

Method for registering two-dimensional image data, computer program product, navigation method for navigating a treatment apparatus in the medical field, and computational device for registering two-dimensional image data

The present invention relates to a method for registering a two-dimensional image data set, generated using fan-shaped imaging rays, in the medical field, wherein the method comprises: processing the two-dimensional image data on the basis of a spatial transformation function which describes a spatial relative position between points which have been imaged using a fan-shaped imaging ray, and the imaging apparatus used for imaging; and processing the two-dimensional image data on the basis of an imaging transformation function which describes an imaging function of the imaging apparatus used for generating the two-dimensional image data set, which describes a spatial relationship between the actual spatial position of imaged points and their imaging location in a recording.

Method for registering a two-dimensional image data set, generated using fan-shaped imaging rays, in the medical field and a corresponding computer program product and method and system for automatically registering a body on the basis of two-dimensional image data, for use in medical navigation systems

A marker navigation system for detecting and displaying locations of at least two reference devices, each reference device attachable to a corresponding object includes a detection device for detecting signals emitted from the at least two reference devices, a display device for displaying the locations of the at least two reference devices and/or the objects attached to the at least two reference devices based in accordance with display signals; and a data processing device. The data processing device is configured to a) calculate locations of the at least two reference devices based on the detected signals; b) determine changes in the locations of the at least two reference devices based on the calculated locations; c) check, based on the determined changes, whether the changes in the locations of the at least two reference devices can be described by at least one checking transformation that, to a predetermined extent, transforms the locations of the at least two reference devices before the change into the locations of the at least two reference devices after the change; and d) determine the display signals for displaying the locations of the at least two reference devices and/or of objects attached to the at least two reference devices as a function of the checking result.

Marker navigation system for detecting and displaying the location of marker means

The present application relates to an x-ray marker device comprising an arrangement of x-ray markers, wherein the arrangement defines straight lines which are referred to as device straight lines, wherein at least some of the device straight lines, which are referred to as pyramid straight lines, comprise portions which define edges of at least one pyramid.

Assigning X-ray markers to image markers imaged in the X-ray image

A medical x-ray detection device includes an x-ray detector operable to detect the presence of x-ray radiation in a medical environment, and a signal emitter operatively coupled to said x-ray detector. The signal emitter includes at least one active light-emitting signal device, wherein the signal emitter is operative to emit a signal corresponding to the presence of x-ray radiation.

Medical x-ray detection device including an active optical signal emitter

A camera system includes at least two camera units, wherein each camera unit comprises at least one detection element for detecting an optical signal. At least one of the at least two camera units includes at least one element operative to enable detection of light in at least two different spectral ranges.

Multi-band tracking and calibration system

A method for optimizing the interpretation of analog image signals or sequences of image signals output by medical image recording devices. The correlation of consecutively recorded image signals is tested and, based on the test, the image signals are identified as depicting the same or different images. More specifically, if the correlation is not less than a particular threshold value, it is established that the image signals depict the same image. If the correlation is less than a particular threshold value, it is established that the image signals possibly depict different images. Further, the threshold value is dynamically adjusted if the correlation has changed.

Growing community of inventors

Munich, Germany

Manfred Weiser