公开(公告)号：US20220096158A1

公开(公告)日：2022-03-31

申请号：US17298330

申请日：2019-01-31

Applicant: Brainlab AG

Inventor： Sven FLOSSMANN ,  Sebastian STOPP ,  Susanne HAGER ,  Christian SCHMALER ,  Christoffer HAMILTON

IPC: A61B34/10 ,  G06T19/00 ,  G06F3/01 ,  G06T7/70 ,  G06T7/20 ,  G06T7/00

Abstract: Provided is a method that encompasses the determination of a virtual trajectory within a virtual representation of a patient's anatomy, wherein the trajectory is defined by a user's visual axis relative to the three-dimensional virtual representation of the patient's anatomy. The method includes acquiring image data which describes the three-dimensional virtual representation of the patient's body part, acquiring position data which describes a spatial position of a user's visual axis within a virtual-world co-ordinate system, determining visualization data based on the image data and the position data, and determining virtual-world trajectory data based on the position data.

公开(公告)号：US20210137632A1

公开(公告)日：2021-05-13

申请号：US16629351

申请日：2018-07-11

Applicant: Brainlab AG

Inventor： Sebastian STOPP ,  Johannes MANUS

IPC: A61B90/25 ,  A61B90/00 ,  A61B34/20 ,  A61B17/00

Abstract: The present application relates to an optical observation device which is controlled in a sterility preserving manner, and to a corresponding controlling program and/or program storage medium. The optical observation device includes a main structure having at least one optical camera, a motorized support for positioning the main structure, and a control unit that receives a sequence of images from the at least one optical camera, searches a current image from the sequence of images for a trackable object, tracks the trackable object shown in the sequence of images subsequent to the current image, and controls the motorized support structure.

公开(公告)号：US20240122650A1

公开(公告)日：2024-04-18

申请号：US18395976

申请日：2023-12-26

Applicant: Brainlab AG

Inventor： Sven FLOSSMANN ,  Sebastian STOPP ,  Susanne HAGER ,  Christian SCHMALER ,  Christoffer HAMILTON

IPC: A61B34/10 ,  G06F3/01 ,  G06T7/00 ,  G06T7/20 ,  G06T7/70 ,  G06T19/00

CPC classification number: A61B34/10 ,  G06F3/013 ,  G06T7/0012 ,  G06T7/20 ,  G06T7/70 ,  G06T19/006 ,  A61B2034/105 ,  A61B2034/107 ,  A61B2090/365

Abstract: Provided is a method that encompasses the determination of a virtual trajectory within a virtual representation of a patient's anatomy, wherein the trajectory is defined by a user's visual axis relative to the three-dimensional virtual representation of the patient's anatomy. The method includes acquiring image data which describes the three-dimensional virtual representation of the patient's body part, acquiring position data which describes a spatial position of a user's visual axis within a virtual-world co-ordinate system, determining visualization data based on the image data and the position data, and determining virtual-world trajectory data based on the position data.

公开(公告)号：US20230210478A1

公开(公告)日：2023-07-06

申请号：US17927063

申请日：2020-05-29

Applicant: Brainlab AG

Inventor： Sebastian STOPP ,  Nils FRIELINGHAUS

IPC: A61B6/04 ,  A61B6/00

CPC classification number: A61B6/0492 ,  A61B6/52

Abstract: The present invention relates to a computer-implemented method of determining a rotational position of an object in a coordinate system of an x-ray imaging device. An x-ray image is generated of an object to which a Moiré marker for x-ray imaging is attached. Subsequently, the Moiré pattern generated by the Moiré marker is analysed and the rotational position of the marker and hence of the object is determined in a calculative manner. The Moiré marker for x-ray imaging includes a pattern which results in a significantly different appearance when being observed from slightly different perspectives. One embodiment example of the Moiré marker for x-ray imaging consists of two layers with patterns produced by a material that shields x-ray as good as possible like for example lead, surrounded and spaced apart by material that is highly transparent in x-ray like for example air or light plastics. The size of the openings in the pattern shall preferably be small compared to the distance of the two layers such that a small change in orientation of the marker results in a fairly significant change in the structure of the second layer seen through the aperture of the first layer. Multiple structures with different hole sizes and layer distances can be used to have a larger working range while maintaining accuracy.

公开(公告)号：US20220189045A1

公开(公告)日：2022-06-16

申请号：US17603280

申请日：2019-05-28

Applicant: Brainlab AG

Inventor： Sebastian STOPP

IPC: G06T7/33 ,  A61B34/10

Abstract: Disclosed is a computer-implemented method of determining a spatial relationship between planning image data and current surface data which leads to improved surface registration accuracy by considering the elasticity and deformability of the tissue. The knowledge about the tissue can be estimated based on type of tissue and atlas information. For the process of generating surface registration points on specific anatomical regions, e.g. the face or forehead, are acquired with a classical navigated pointer or laser pointer. It is also possible to acquire points with surface scanners. Confidence values defining a probability for certain parts of the surface registration points being deformed in comparison to a planning image are read from atlas data and used to compensate for the deformation in the registration between the surface registration points and the planning image in order to render the registration valid.

公开(公告)号：US20220058829A1

公开(公告)日：2022-02-24

申请号：US17275052

申请日：2019-09-11

Applicant: Brainlab AG

Inventor： Sebastian STOPP ,  Johannes ZÜGNER ,  Johannes MANUS ,  José GARDIAZABAL

IPC: G06T7/80 ,  H04N17/00 ,  G06T7/246 ,  H04N5/232 ,  A61B90/00 ,  A61B34/20 ,  A61B34/00

Abstract: A method of determining a focal length of a camera and/or of adjusting a viewing direction in a graphical representation of a pre-operative image is provided. The method includes providing uncalibrated camera data of a camera, specifying an initial value of a focal length of the camera, specifying a working distance value of a distance between the camera and the at least part of the tracking system, calculating a distance value of the distance between the camera and the at least part of the tracking system based on the uncalibrated camera data and based on the specified initial value of the focal length of the camera, calculating a change factor based on the specified working distance value and the calculated distance value, and calculating an adapted value of the focal length of the camera based on the initial value of the focal length and based on the change factor.