Registration of frames of reference

    公开(公告)号:US11123144B2

    公开(公告)日:2021-09-21

    申请号:US16748993

    申请日:2020-01-22

    摘要: Apparatus, including a patient tracker, attached to a subject, having magnetic field sensors and optical landmarks with known spatial relationships to each other. A camera acquires a 3D optical image, in a first frame of reference (FOR), of the subject's face. A magnetic radiator assembly generates magnetic fields at the subject's head, thereby defining a second FOR. A processor: processes field sensor signals to acquire location coordinates of the sensors in the second FOR; segments a tomographic image of the subject, having a third FOR, to identify the subject's face in the third FOR; computes a first transformation between the third and first FORs to map the tomographic face image to the 3D optical image; maps the optical landmarks to the third FOR; maps the respective location coordinates of the sensors to the first FOR; and computes a second transformation between the second FOR and the third FOR.

    SYSTEMS AND METHODS FOR TRACKING A SURGICAL DEVICE

    公开(公告)号:US20220031400A1

    公开(公告)日:2022-02-03

    申请号:US17383980

    申请日:2021-07-23

    IPC分类号: A61B34/20 G06T7/30

    摘要: Systems, methods, and devices for registering a 3D image of a patient with magnetic coordinates are disclosed. A tri-axial sensor (TAS) may be added to the 3D camera. The location and orientation of the TAS sensor may be determined based on the known magnetic fields that are applied by a magnetic field transmitter. The camera coordinate system may then be transferred to the magnetic coordinate system. After completing the registration of the 3D image with a CT image and the 3D image with the magnetic coordinates, the CT image may then be registered with the magnetic coordinates.

    3D PATHFINDER VISUALIZATION
    5.
    发明申请

    公开(公告)号:US20230113035A1

    公开(公告)日:2023-04-13

    申请号:US18081986

    申请日:2022-12-15

    摘要: In one embodiment, an apparatus includes a medical instrument, a position tracking system to track coordinates of the instrument within a passage in a body, a processor to register the system and a 3D CT image of at least a part of the body, find a path of the instrument through the passage, compute segments of the path, compute respective locations along the path of respective virtual cameras responsively to the computed segments, select the respective virtual cameras for rendering respective virtual endoscopic images responsively to the tracked coordinates, compute respective orientations of the respective virtual cameras, and render and display the respective virtual endoscopic images, based on the 3D CT image, of the passage in the body viewed from the respective locations and orientations of the respective virtual cameras including an animated representation of the instrument positioned in the respective virtual endoscopic images in accordance with the tracked coordinates.

    Endoscope with dual image sensors

    公开(公告)号:US10955657B2

    公开(公告)日:2021-03-23

    申请号:US16695500

    申请日:2019-11-26

    IPC分类号: G02B23/24 A61B1/00

    摘要: An endoscopic camera has two or more cameras positioned at a distal end, positioned to provide partially overlapping fields of view. The cameras communicate captured digital images the length of the flexible endoscope, where they may be saved and processed to provide additional imaging features. With partially overlapping images from two or more cameras, image processing can provide panoramic images, super resolution images, and three-dimensional images. One or more of these image modes may also be enhanced to provide a virtualization window that displays a portion of a larger or higher resolution image. The virtualization window displays the selected area of the image, and may be moved or zoomed around the image to provide a virtual endoscope repositioning experience, where the endoscope remains statically positioned but the virtualization window presents a sense of movement and navigation around the surgical area.

    3D pathfinder visualization
    10.
    发明授权

    公开(公告)号:US11596481B2

    公开(公告)日:2023-03-07

    申请号:US16726661

    申请日:2019-12-24

    摘要: In one embodiment, an apparatus includes a medical instrument, a position tracking system to track coordinates of the instrument within a passage in a body, a processor to register the system and a 3D CT image of at least a part of the body, find a path of the instrument through the passage, compute segments of the path, compute respective locations along the path of respective virtual cameras responsively to the computed segments, select the respective virtual cameras for rendering respective virtual endoscopic images responsively to the tracked coordinates, compute respective orientations of the respective virtual cameras, and render and display the respective virtual endoscopic images, based on the 3D CT image, of the passage in the body viewed from the respective locations and orientations of the respective virtual cameras including an animated representation of the instrument positioned in the respective virtual endoscopic images in accordance with the tracked coordinates.