CAMERA-BASED TRACKING SYSTEM
    3.
    发明公开

    公开(公告)号:EP4190266A1

    公开(公告)日:2023-06-07

    申请号:EP21212167.7

    申请日:2021-12-03

    IPC分类号: A61B34/20

    摘要: The present invention relates to operating a camera-based tracking system. In order to provide accurate tracking at an earlier stage, a control device (10) for operation of a camera-based tracking system is provided. The control device comprises a controller (12) and a control signal output (14). The controller is configured to generate at least one operation signal for the tracking system that comprises, at least during a starting phase of the tracking system, at least one calibration compensation instruction. The at least one calibration compensation instruction comprises instructions for at least one of the group of: i) actively adjusting a temperature of the camera-based tracking system, and ii) adapting a calibration-related camera output of the camera-based tracking system, which camera output is used for a tracking calculation. The control signal output is configured to provide the at least one operation signal to the tracking system. In one approach, a pre-heating is provided in order to achieve (steady) calibration state by providing a control signals to the cameras for operation in a high thermal energy production mode. In another approach, the calibration is provided as dynamic calibration model that allows a calibration also for states of the system outside the steady state.

    NAVIGATION SUPPORT
    5.
    发明公开
    NAVIGATION SUPPORT 审中-公开

    公开(公告)号:EP4026510A1

    公开(公告)日:2022-07-13

    申请号:EP21150736.3

    申请日:2021-01-08

    IPC分类号: A61B34/20 A61B90/00

    摘要: The present invention relates to guidance during a medical intervention. In order to provide an improved navigation support with a facilitated setup, a system (10) for navigation support is provided. An image data input (12) receives a plurality of acquired 2D X-ray CT images of a subject's body from different angles. A set of markers, which are visible in X-ray images and which are detectable by a navigation system, is assigned to the subject. A marker detecting arrangement (16) is provided that detects a current spatial location of the markers assigned to the subject. A data processor (14) reconstructs a 3D volume of the subject based on the plurality of 2D X-ray CT images. At least a part of the markers is arranged outside the volume covered by the reconstructed 3D volume of the subject, while the markers are visible in the 2D X-ray CT images. The data processor (14) identifies the markers in the 2D X-ray CT images based on image data of the plurality of 2D X-ray CT images outside the 3D volume and determines a spatial location of the markers in relation to the 3D volume of the subject. The data processor (14) also registers the reconstructed 3D volume of the subject to a current spatial position of the subject based on the detected current spatial location of the markers and the determined spatial location of the markers in relation to the 3D volume of the subject. An output interface (18) provides the registered reconstructed 3D volume for navigation.

    TUMOR MARGIN ASSESSMENT
    7.
    发明公开

    公开(公告)号:EP3560415A1

    公开(公告)日:2019-10-30

    申请号:EP18169011.6

    申请日:2018-04-24

    IPC分类号: A61B5/00

    摘要: A system SY for determining a tissue type TY of a tissue region TR is provided in which the distal ends OFDE 1..n of at least three optical fibers define a plurality of intersecting optical paths IOP 1..k within the tissue region TR. A tissue signal Q 1..k indicative of a tissue type TY for the respective optical path IOP 1..k is generated from said spectral measurement data SMD corresponding to each of the plurality of intersecting optical paths IOP 1..k . Each tissue signal Q 1..k is compared with a reference threshold QRT for the tissue type, and with an average of the tissue signals QMA. At least a portion of the tissue region is identified as the tissue type TY if i) every tissue signal Q 1..k in the tissue region TR indicates that its corresponding tissue is not the tissue type TY in the comparison with the reference threshold QRT and ii) at least one of the tissue signals Q 1..k in the tissue region TR lies between the average QMA of the tissue signals Q 1..k and the reference threshold QRT, and a difference Δ between the at least one tissue signal Q 1..k and the average QMA of the tissue signals Q 1..k exceeds a predetermined value ΔP.