公开(公告)号：US20150379718A1

公开(公告)日：2015-12-31

申请号：US14766471

申请日：2013-04-03

Applicant: BRAINLAB AG

Inventor： Mario SCHUBERT ,  Melanie WEGNER ,  Sabine KLING

IPC: G06T7/00 ,  G06K9/52 ,  G06T7/60 ,  G06T3/60 ,  G01B11/14

CPC classification number: A61B5/1079 ,  A61B5/0077 ,  A61B5/1072 ,  A61B5/1075 ,  A61B5/1121 ,  A61B5/1127 ,  A61B5/4538 ,  A61B5/7278 ,  A61B34/20 ,  A61B2034/2048 ,  A61B2034/2055 ,  A61B2034/2068 ,  A61B2090/3937 ,  A61B2562/0219 ,  A61B2576/00 ,  G01B11/14 ,  G06F19/00 ,  G06K9/52 ,  G06T3/60 ,  G06T7/0014 ,  G06T7/30 ,  G06T7/60 ,  G06T7/73 ,  G06T7/74 ,  G06T2207/30004 ,  G06T2207/30204

Abstract: A data processing method for determining the relative orientation of an object coordinate system of an anatomical object in a global co-ordinate system, comprising the steps of: acquiring a reference direction dataset representing a first reference direction of a line between a first anatomical landmark of a reference object and a second anatomical landmark of the reference object, and a second reference direction of a line between a third anatomical landmark of the reference object and a fourth anatomical landmark of the reference object, wherein the first and second reference directions are given in a reference coordinate system and the reference object corresponds to the anatomical object; acquiring an object direction dataset representing a first object direction of a line between the first anatomical landmark of the anatomical object and the second anatomical landmark of the anatomical object, and a second object direction of a line between the third anatomical landmark of the anatomical object and the fourth anatomical landmark of the anatomical object, wherein the first and second object directions are given in the global co-ordinate system and the landmarks of the anatomical object correspond to the landmarks of the reference object; calculating the orientation of the reference co-ordinate system relative to the global co-ordinate system which results in the best match between each of the reference directions and the respectively corresponding object direction; and—using the orientation of the reference co-ordinate system in the global co-ordinate system as the relative orientation of the object co-ordinate system.

Abstract translation: 一种用于确定全局坐标系中的解剖学对象的物体坐标系的相对取向的数据处理方法，包括以下步骤：获取基准方向数据集，所述参考方向数据集表示第一解剖学标记之间的线的第一参考方向， 参考对象的参考对象和第二解剖学标记，以及参考对象的第三解剖标记与参考对象的第四解剖学标记之间的线的第二参考方向，其中第一和第二参考方向在 参考坐标系和参考对象对应于解剖对象; 获取表示解剖学对象的第一解剖学标记与解剖学对象的第二解剖学标记之间的线的第一对象方向的对象方向数据集，以及解剖对象的第三解剖学标记之间的线的第二对象方向和 解剖学对象的第四解剖学标记，其中在全局坐标系中给出第一和第二对象方向，并且解剖对象的界标对应于参考对象的界标; 计算参考坐标系相对于全局坐标系的取向，其导致每个参考方向和相应的对象方向之间的最佳匹配; 并使用全局坐标系中参考坐标系的方向作为对象坐标系的相对方向。

公开(公告)号：US20210236208A1

公开(公告)日：2021-08-05

申请号：US17049634

申请日：2020-03-16

Applicant: Brainlab AG

Inventor： Thomas DREXL ,  Melanie WEGNER

IPC: A61B34/20

Abstract: A computer implemented medical method of calibrating a medical instrument is provided. The method calculates a position of the instrument tip model within the indentation model, associated with an estimated position of the instrument tip within the indentation and calibrates the medical instrument, thereby using the determined position of the instrument tip model. The position of any arbitrary medical instrument tip, such as an indentation of a calibration device, can be estimated. This is an improvement of accuracy in view of the generic approach of using the same reference point of the indentation of the calibration device for any arbitrary medical instrument tip. A virtual model of a shape of a medical instrument, such as the instrument tip, is matched onto a virtual model of a shape of a calibration device, such as an indentation of the calibration device.

公开(公告)号：US20160022173A1

公开(公告)日：2016-01-28

申请号：US14773553

申请日：2013-09-18

Applicant: BRAINLAB AG

Inventor： Mario SCHUBERT ,  Melanie WEGNER ,  Sabine KLING ,  Luise POITZSCH

IPC: A61B5/107 ,  A61B5/11 ,  A61B5/00

CPC classification number: A61B5/1079 ,  A61B5/0077 ,  A61B5/1072 ,  A61B5/1075 ,  A61B5/1121 ,  A61B5/1127 ,  A61B5/4538 ,  A61B5/7278 ,  A61B34/20 ,  A61B2034/2048 ,  A61B2034/2055 ,  A61B2034/2068 ,  A61B2090/3937 ,  A61B2562/0219 ,  A61B2576/00 ,  G01B11/14 ,  G06K9/52 ,  G06T3/60 ,  G06T7/0014 ,  G06T7/30 ,  G06T7/60 ,  G06T7/73 ,  G06T7/74 ,  G06T2207/30004 ,  G06T2207/30204

Abstract: A data processing method, performed by a computer, for determining a leg length difference and a leg offset difference of a patient's leg including a femur connected to a pelvis, comprising the steps of: —determining a first landmark vector between a femoral landmark and a second landmark at a first point in time; —determining a second landmark vector between the femoral landmark and the second landmark at a second point in time which is later than the first point in time; —calculating an orthogonal projection of the first landmark vector into a sagittal plane and using the direction of the orthogonal projection of the first landmark vector into the sagittal plane as a leg length direction; —calculating a direction which is perpendicular to the sagittal plane and using this direction as a leg offset direction; and —calculating the leg length difference in the leg length direction and the leg offset difference in the leg offset direction from the first landmark vector and the second landmark vector.

Abstract translation: 一种由计算机执行的用于确定包括连接到骨盆的股骨的患者腿部的腿部长度差和腿部偏移差异的数据处理方法，包括以下步骤： - 确定股骨标记和第 在第一时间点的第二个地标; - 在第二时间点之后确定股骨标记和第二标记之间的第二标记向量，该第二时间点晚于第一时间点; 将所述第一界标矢量的正交投影计算到矢状平面中，并且使用所述第一界标矢量的正交投影的方向作为所述矢状面作为腿长度方向; 计算垂直于矢状面的方向，并使用该方向作为腿偏移方向; 以及计算腿长度方向上的腿长度差和腿偏移方向上的腿偏移差与第一界标矢量和第二界标矢量。