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    Method and apparatus for calculating the contact position of an ultrasound probe on a head
    3.
    发明授权
    Method and apparatus for calculating the contact position of an ultrasound probe on a head 有权

    公开(公告)号：US10420532B2

    公开(公告)日：2019-09-24

    申请号：US14760575

    申请日：2013-01-23

    Applicant: Brainlab AG

    Inventor： Fritz Vollmer ,  Ingmar Thiemann

    IPC: A61B8/00 ,  A61B8/08 ,  G06T7/73

    Abstract: A data processing method for calculating the contact position of a medical ultrasound transceiver on the head of a patient, comprising the steps of: a) acquiring ROI data which represent a region of interest (ROI) corresponding to at least a part of a vessel in a vascular structure; b) acquiring contact region data which represent a contact region for the ultrasound transceiver on the head, wherein the contact region corresponds to one or more acoustic windows; c) determining at least one target point in the region of interest; d) determining at least two entry points on the contact region; e) calculating a set of lines which comprises the lines between the two points of each respective possible pair consisting of one entry point and one target point; f) eliminating lines which pass through a bony structure other than the bone immediately beneath the contact region; g) calculating a score for each of the remaining lines; and h) selecting the entry point of the line with the highest score as the contact position of the ultrasound transceiver.

    METHOD AND DEVICE FOR CALIBRATING A PROJECTION DEVICE
    5.
    发明申请
    METHOD AND DEVICE FOR CALIBRATING A PROJECTION DEVICE 审中-公开
    用于校准投影装置的方法和装置

    公开(公告)号：US20140293294A1

    公开(公告)日：2014-10-02

    申请号：US14360981

    申请日：2011-11-28

    Applicant: Brainlab AG

    Inventor： Troels Frimor ,  Fritz Vollmer

    IPC: G01B11/00

    CPC classification number: G01B11/00 ,  H04N9/3194

    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). The present invention also relates to a calibration device (11) for automatically calibrating a projection device (2), said calibration device (11) comprising a reference array (7) and a detection device (1) which is coupled to the reference array (7), in particular in a predetermined position, wherein the detection device (1) is configured to detect light, and to a self-calibrating projection device system comprising the calibration device (11) and a projection device (2) which is configured to generate a known projection (3) comprising an area (4) which is configured to stimulate a detection device (1) of the calibration device (11).

    Abstract translation: 本发明涉及一种用于在用于医疗目的的导航环境中校准投影装置，特别是手持投影装置的方法，包括以下步骤：提供检测装置（1），其被配置为检测由所述投影 装置（2）; 确定所述检测装置（1）的空间位置; 投影已知的突起（3），其包括通过所述投影装置（2）向所述检测装置（1）刺激所述检测装置（1）的区域（4）。 当区域（4）刺激检测装置（1）时，确定投影装置（2）的位置，特别是关于检测装置（1）。 本发明还涉及一种用于自动校准投影装置（2）的校准装置（11），所述校准装置（11）包括参考阵列（7）和检测装置（1），其耦合到参考阵列 特别是在检测装置（1）被配置为检测光的预定位置以及包括校准装置（11）和投影装置（2）的自校准投影装置系统的预定位置中，所述投影装置被配置为 生成包括被配置为刺激校准装置（11）的检测装置（1）的区域（4）的已知投影（3）。

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