Method of segmenting a three-dimensional structure contained in an object, notably for medical image analysis
    72.
    发明授权
    Method of segmenting a three-dimensional structure contained in an object, notably for medical image analysis 有权
    分割对象中包含的三维结构的方法,特别是用于医学图像分析

    公开(公告)号:US07167172B2

    公开(公告)日:2007-01-23

    申请号:US10091050

    申请日:2002-03-05

    IPC分类号: G06T15/00

    摘要: The invention relates to a method of segmenting a three-dimensional structure, contained in an object, from one or more two-dimensional images which represent a slice of the object. The method utilizes a deformable model whose surface is formed by a network of meshes which connect network points on the surface of the model to one another. First there are determined the meshes which intersect at least one image and a point on the surface of the structure to be segmented is searched along a search line which traverses the mesh and extends in the image. Subsequently, the position of the network points of the model is calculated anew. These steps are repeated a number of times and the model ultimately obtained, that is, after several deformations, is considered to be the segmentation of the three-dimensional structure from the two-dimensional images.

    摘要翻译: 本发明涉及一种从一个或多个二维图像中分割包含在对象中的三维结构的方法,所述二维图像表示对象的切片。 该方法利用可变模型,其表面由网格网络形成,网格网络将模型表面上的网络点彼此连接。 首先确定与至少一个图像相交的网格,并且沿着要遍历网格的搜索线搜索要分割的结构的表面上的点,并在图像中延伸。 随后,重新计算模型网络点的位置。 这些步骤重复多次,并且最终获得的模型,即,在几个变形之后,被认为是来自二维图像的三维结构的分割。

    Apparatus and method for assisting the navigation of a catheter in a vessel
    73.
    发明申请
    Apparatus and method for assisting the navigation of a catheter in a vessel 有权
    用于辅助导管在血管中导航的装置和方法

    公开(公告)号:US20050288577A1

    公开(公告)日:2005-12-29

    申请号:US10536843

    申请日:2003-11-27

    申请人: Juergen Weese

    发明人: Juergen Weese

    摘要: The invention relates to the assistance of the navigation of a catheter (1) in a vessel (2). A sequence of cross-sectional images of the portion of the vessel that is of interest is first obtained with the help of an intravascular ultrasound (IVUS) probe (3) and stored as a roadmap of the vessel. A cross-sectional image (10) that is obtained at the current position of the IVUS probe (3) can then be sorted to the position on the roadmap that is the best fit. A model (3′) of the probe, and a model (11′) of the instrument (a stent (11), for example) coupled to the probe, can be shown on a display (6) at the corresponding position on the roadmap.

    摘要翻译: 本发明涉及导管(1)在血管(2)中导航的辅助。 首先通过血管内超声(IVUS)探针(3)的帮助首先获得感兴趣的血管部分的横截面图像序列,并存储为血管的路线图。 在IVUS探头(3)的当前位置处获得的横截面图像(10)可以被分类到路线图上最适合的位置。 耦合到探针的探针的模型(3')和与仪器(例如支架)相连的模型(11')可以在显示器(6)上显示在 路线图