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公开(公告)号：US20150363937A1
公开(公告)日：2015-12-17
申请号：US14762642
申请日：2013-12-02
Applicant: RAYSEARCH LABORATORIES AB
Inventor： Ola WEISTRAND
IPC: G06T7/00
CPC classification number: G06T7/0089 , G06T7/11 , G06T7/149 , G06T7/30 , G06T2207/10081 , G06T2207/10088 , G06T2207/20016 , G06T2207/20128 , G06T2207/30004
Abstract: A method for atlas-based segmentation is provided where a patient image is rigidly registered with each of a plurality of atlas images. Based on the rigid registration results, which indicate a degree of similarity for each atlas, an atlas image is selected for deformable registration where the rigid registration result is used as initialization. Regions of interest are segmented in the patient image using the results of the deformable registration.
Abstract translation: 提供了一种基于图集的分割方法，其中患者图像与多个图集图像中的每一个刚性地对齐。 基于刚性登记结果，其表示每个图谱的相似程度，选择图集图像用于可变形登记，其中使用刚性登记结果作为初始化。 感兴趣区域使用可变形登记的结果在患者图像中被分割。
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公开(公告)号：US20220076069A1
公开(公告)日：2022-03-10
申请号：US17415776
申请日：2019-12-16
Applicant: RaySearch Laboratories AB
Inventor： Ola WEISTRAND
Abstract: A method for generating data representing the volume of part of a body, the method comprising generating a point distribution model “PDM” based on an input dataset comprising data representing at least one surface of part of a body, the PDM defining a surface model dataset based on an average dataset and one or more weight-eigenvector pairs, generating a first surface model dataset based on the PDM by modifying at least one weight of the one or more weight-eigenvector pairs, wherein the first surface model dataset is different from the average dataset, and generating an output volume dataset based on the first surface model dataset and a first reference dataset, the first reference dataset comprising data representing the volume of a corresponding part of a body, the output volume dataset comprising data representing a deformed volume of the corresponding part of the body.
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3.发明申请公开(公告)号：US20190197692A1
公开(公告)日：2019-06-27
申请号：US16329415
申请日：2017-09-04
Applicant: RaySearch Laboratories AB
Inventor： Ola WEISTRAND
CPC classification number: G06T7/12 , G06T7/149 , G06T7/174 , G06T2207/10072 , G06T2207/20096 , G06T2207/30004
Abstract: An anatomic structure of interest is contoured in 3D source data by selecting a first subset of data in a first image slice at a first axial position (z1). A first set of instructions identifies a first edge (E1) of the anatomic structure of interest in the first image slice. Then, a second subset of data is selected in a second image slice at a second axial position (z2); and a second set of instructions identifies a second edge (E2) of the anatomic structure of interest in the second image slice. A three-dimensional shell (3DS) is calculated based on the first and second edges (E1; E2) and the source data (SD). The three-dimensional shell (3DS) represents an approximation of a delimiting surface that separates the anatomic structure of interest from adjoining tissues in the 3D source data.
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公开(公告)号：US20180182106A1
公开(公告)日：2018-06-28
申请号：US15738891
申请日：2016-06-23
Applicant: RaySearch Laboratories AB
Inventor： Ola WEISTRAND
CPC classification number: G06T7/174 , G06T3/0081 , G06T7/0012 , G06T7/12 , G06T15/08 , G06T2200/04 , G06T2207/10072 , G06T2207/20041 , G06T2207/20096 , G06T2207/20104 , G06T2207/30056
Abstract: A data processing unit receives a reference image (IMG13D) of a deformable physical entity, a target image (IMG23D) of said physical entity, and a first region of interest (ROI13D) defining a first volume in the reference image (IMG13D) representing a reference image element. The reference image (IMG13D), the target image (IMG23D) and the first region of interest (ROI13D) all contain 3D datasets. In response to user commands (c1; c2), the data processing unit defines a first contour (C12D) in a first plane through the target image (IMG23D), which is presented to a user via a display unit together with graphic data reflecting the reference image (IMG13D), the target image (IMG23D) and the first region of interest (ROI13D). The first contour (C12D) is aligned with at least a portion of a first border (IEB1) of a target image element (IE3D) in the target image (IMG23D). The target image element (IE3D) corresponds to the reference image element in the reference image (IMG13D). Based on the first contour (C12D), the target image (IMG23D) and the first region of interest (ROI13D); the data processing unit determines a second region of interest (ROI23D) defining a second volume in the target image (IMG23D).
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