公开(公告)号：US20200305976A1

公开(公告)日：2020-10-01

申请号：US16306991

申请日：2018-03-01

Applicant: Brainlab AG

Inventor： Steffen BECK ,  Mario SCHUBERT ,  Christian BRACK ,  Luise POITZSCH

IPC: A61B34/10 ,  G06T3/60 ,  G06T7/00 ,  G06T11/00

Abstract: The invention relates to a method of determining the sagittal rotation of a patient's pelvis based on a standard anterior posterior X-ray-image with known image parameters and a calibration of the image, for example by using at least one King-Mark calibration object. The angle of the pelvic rotation is determined between a pelvic plane which is orthogonal to the midsagittal plane of the pelvis, and the image plane of the X-ray-image. Assuming the patient's position shown on the X-ray-image represents a standard neutral position, the X-ray-image plane can be used as a functional reference plane for further calculations, for example during hip-replacement surgery. The present invention further relates to a corresponding computer program and system.

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。