公开(公告)号：US20090041321A1

公开(公告)日：2009-02-12

申请号：US12254945

申请日：2008-10-21

申请人： Bernhard Geiger ,  Jean-Daniel Boissonnat

发明人： Bernhard Geiger ,  Jean-Daniel Boissonnat

IPC分类号： G06K9/00

CPC分类号： G06K9/44 ,  G06K2209/05 ,  G06T7/12 ,  G06T7/149 ,  G06T7/66 ,  G06T2207/10081 ,  G06T2207/30028 ,  G06T2210/41 ,  Y10S128/922

摘要： A method for automatic centerline extraction for a virtual endoscopy image of an organ having a boundary surface includes centering on selected points of an initial path through the image, which is derived from an endoscopy dataset, respective spheres exhibiting respective maximal diameters short of contacting the boundary surface; and forming a centered path consecutively joining centers of the spheres.

公开(公告)号：US20090040221A1

公开(公告)日：2009-02-12

申请号：US12254939

申请日：2008-10-21

申请人： Bernhard Geiger ,  Jean-Daniel Boissonnat

发明人： Bernhard Geiger ,  Jean-Daniel Boissonnat

IPC分类号： G06T17/00

CPC分类号： G06K9/44 ,  G06K2209/05 ,  G06T7/12 ,  G06T7/149 ,  G06T7/66 ,  G06T2207/10081 ,  G06T2207/30028 ,  G06T2210/41 ,  Y10S128/922

摘要： A method for automatic centerline extraction for a virtual endoscopy image of an organ having a boundary surface includes centering on selected points of an initial path through the image, which is derived from an endoscopy dataset, respective spheres exhibiting respective maximal diameters short of contacting the boundary surface; and forming a centered path consecutively joining centers of the spheres.

摘要翻译： 用于具有边界表面的器官的虚拟内窥镜检查图像的自动中心线提取的方法包括以从内窥镜检查数据集导出的通过图像的初始路径的选定点为中心，各个球体表现出与接触边界不相关的最大直径 表面; 并形成一个连续中心连接中心的中心路径。

公开(公告)号：US20080175459A1

公开(公告)日：2008-07-24

申请号：US11968308

申请日：2008-01-02

申请人： Bernhard Geiger ,  Sandra Sudarsky

发明人： Bernhard Geiger ,  Sandra Sudarsky

IPC分类号： G06K9/00

CPC分类号： A61B6/12 ,  A61B5/055 ,  A61B5/4255 ,  A61B6/03 ,  A61B6/466 ,  G06T7/0012 ,  G06T7/187 ,  G06T7/60 ,  G06T2207/10072 ,  G06T2207/20044 ,  G06T2207/30028

摘要： A method and apparatus for guiding image reading for colon screening, includes calculating a centerline for a colon; scrolling through a succession of two dimensional (2D) cross-sectional images of a colon in respective image planes, such that a current image plane includes a respective current focus point formed by an intersection of the centerline with the current image plane. The method further includes performing a three-dimensional (3D) region growing process for growing a region of a suitable given thickness around a current seed point in a current image plane, the current seed point being at the respective current focus point in the current image plane, such that the region growing “floods” folds within a prescribed distance from the current seed point such that part of the region intersects the current image plane. Portions of the region intersecting the current image plane that meets at least one of conditions (A) and (B) are removed from consideration where: condition (A) includes the region intersecting the given current image plane containing a further connected component not containing the current seed point, and containing a further intersection of the image plane with the centerline other than the current seed point, and condition (B) includes the further connected component exhibiting a larger area than that exhibited by a connected component containing the current seed point; and marking remaining portions of the region intersecting the current image plane, not removed from consideration, as seen areas.

摘要翻译： 用于引导用于结肠筛查的图像读取的方法和装置包括计算冒号的中心线; 在相应的图像平面中滚动一连串的冒号的二维（2D）横截面图像，使得当前图像平面包括由中心线与当前图像平面的交点形成的相应的当前焦点。 该方法还包括执行三维（3D）区域生长过程，用于在当前图像平面内生长当前种子点周围的适当给定厚度的区域，当前种子点在当前图像中的相应当前焦点处 使得区域生长“洪水”在与当前种子点规定距离内折叠，使得该区域的一部分与当前图像平面相交。 考虑到满足条件（A）和（B）中的至少一个的当前图像平面相交的区域的部分，其中：条件（A）包括与给定的当前图像平面相交的区域，该区域包含不包含 当前种子点，并且包含图像平面与当前种子点以外的中心线的另一交叉点，并且条件（B）包括显示比由包含当前种子点的连接成分所展示的面积更大的面积的另外连接的分量; 并且将未被考虑的区域与当前图像平面相交的区域的剩余部分标记为可视区域。

公开(公告)号：US07346385B2

公开(公告)日：2008-03-18

申请号：US10683650

申请日：2003-10-10

申请人： Benedicte Bascle ,  Nassir Navab ,  Bernhard Geiger

发明人： Benedicte Bascle ,  Nassir Navab ,  Bernhard Geiger

IPC分类号： A61B19/00

CPC分类号： A61B90/10 ,  A61B10/0233 ,  A61B34/10 ,  A61B2090/376

摘要： A method for determining the best entry point for a percutaneous procedure, such as with a biopsy needle, comprises selecting first and second arbitrary entry points on a patient; determining the three dimensional (3-D) orientation of the needle at the first arbitrary entry point for pointing the needle at the primary target; determining the 3-D orientation of the needle at the first arbitrary entry point for pointing the needle at the secondary target; determining the 3-D dimensional orientation of the needle at the second arbitrary entry point for pointing the needle at the primary target; determining the 3-D orientation of the needle at the second arbitrary entry point for pointing the needle at the secondary target; determining a 3-D line representing the intersection of a first plane containing the first arbitrary entry point, the primary target point, and the secondary target point, and a second plane containing the second arbitrary entry point, the primary target, and the secondary target point, whereby the 3-D line provides a position and orientation for the needle for performing needle biopsy of the primary target through the secondary target.

摘要翻译： 用于确定经皮程序的最佳入口点的方法，例如用活检针，包括选择患者的第一和第二任意入口点; 确定针在第一任意入口处的针的三维（3-D）取向，用于将针指向主要目标; 确定所述针在所述第一任意入口点处的3-D取向以将所述针指向所述次级靶; 确定针在第二任意入口点处的针的三维尺寸取向以将针指向主要目标; 确定针在第二任意进入点处的针的三维取向以将针指向次级靶; 确定表示包含第一任意入口点，主要目标点和次要目标点的第一平面的交点的3-D线以及包含第二任意入口点，主要目标和次要目标的第二平面 点，其中3-D线提供针的位置和取向，用于通过次级靶进行主要靶的针活检。

公开(公告)号：US20060233304A1

公开(公告)日：2006-10-19

申请号：US11402329

申请日：2006-04-11

申请人： Philipp Bernhardt ,  Stefan Bohm ,  Bernhard Geiger

发明人： Philipp Bernhardt ,  Stefan Bohm ,  Bernhard Geiger

IPC分类号： H05G1/42

CPC分类号： G03B42/02 ,  A61B6/00 ,  A61B6/469 ,  H05G1/30

摘要： With a method for controlling the dose or dose rate when recording x-ray images by means of a detector comprising image elements which record a plurality of dose data values, an actual value is determined for the dose or dose rate from the totality of the data values recorded by the image elements of a predetermined image segment, said actual value being compared with a predetermined target value in order to control the dose or dose rate when recording a further x-ray image. In accordance with the invention, the actual value is determined such that on the basis of a frequency distribution of the dose data values of the image elements assigned to the dominant, a p-quantile is determined, and that the dose data value assigned to the p-quantile is used to determine the actual value.

摘要翻译： 利用包括记录多个剂量数据值的图像元素的检测器记录X射线图像时的剂量或剂量率的控制方法，根据数据的全部来确定剂量或剂量率的实际值 由预定图像段的图像元素记录的值，将所述实际值与预定目标值进行比较，以便在记录另外的X射线图像时控制剂量或剂量率。 根据本发明，确定实际值，使得基于分配给主导的图像元素的剂量数据值的频率分布，确定p分位数，并且分配给 p分位数用于确定实际值。

公开(公告)号：US20050197558A1

公开(公告)日：2005-09-08

申请号：US10951188

申请日：2004-09-27

申请人： James Williams ,  Bernhard Geiger ,  Chenyang Xu

发明人： James Williams ,  Bernhard Geiger ,  Chenyang Xu

IPC分类号： A61B5/05 ,  A61B19/00 ,  G09B23/28

CPC分类号： G09B23/285

摘要： A system and method for performing a virtual endoscopy in a branching structure is provided. The method comprises the steps of: determining an initial viewpoint and viewing direction of a virtual endoscope in a branching structure; casting a plurality of rays from the initial viewpoint along the viewing direction; and determining an occurrence of a branch in the branching structure, wherein the occurrence is associated with a cluster that corresponds to the branch.

摘要翻译： 提供了一种用于在分支结构中执行虚拟内窥镜检查的系统和方法。 该方法包括以下步骤：确定分支结构中的虚拟内窥镜的初始视点和观看方向; 沿着观察方向从初始观点投射多根光线; 以及确定所述分支结构中的分支的出现，其中所述出现与对应于所述分支的聚类相关联。

公开(公告)号：US20130113816A1

公开(公告)日：2013-05-09

申请号：US13539863

申请日：2012-07-02

申请人： Sandra Sudarsky ,  Mariappan S. Nadar ,  Shanhui Sun ,  Alban Lefebvre ,  Bernhard Geiger

发明人： Sandra Sudarsky ,  Mariappan S. Nadar ,  Shanhui Sun ,  Alban Lefebvre ,  Bernhard Geiger

IPC分类号： G09G5/02 ,  G06T11/20

CPC分类号： G06T11/206 ,  A61B5/0042 ,  A61B5/4064

摘要： A method for visualizing brain connectivity includes receiving image data including molecular diffusion of brain tissue, constructing a tree data structure from the image data, wherein the tree data structure comprises a plurality of network nodes, wherein each network node is connected to a root of the tree data structure, rendering a ring of a radial layout depicting the tree data structure, wherein a plurality of vertices may be traversed from the top to the bottom, duplicating at least one control point for spline edges sharing a common ancestor, and bundling spline edges by applying a global strength parameter β.

摘要翻译： 用于可视化脑连通性的方法包括接收包括脑组织的分子扩散的图像数据，从图像数据构建树数据结构，其中树数据结构包括多个网络节点，其中每个网络节点连接到 树形数据结构，呈现描绘树状数据结构的径向布局的环，其中可以从顶部到底部遍历多个顶点，复制共享共同祖先的花键边缘的至少一个控制点，以及捆绑样条边 通过应用全局强度参数β。

公开(公告)号：US20120140997A1

公开(公告)日：2012-06-07

申请号：US13245018

申请日：2011-09-26

申请人： Bernhard Geiger ,  Sandra Sudarsky

发明人： Bernhard Geiger ,  Sandra Sudarsky

IPC分类号： G06K9/46 ,  G06K9/34

CPC分类号： G06T7/66 ,  G06T2207/10081 ,  G06T2207/20041 ,  G06T2207/30028 ,  G06T2207/30172

摘要： A method for extracting a colonic centerline includes segmenting a colon from a digital image of a patient's abdomen, selecting one extreme point of the colon as a source point, calculating a first distance transform of every point in the colon that is a distance of a point to the source point, and calculating a second distance transform of every point in the colon, that is a shortest distance of a point to a wall point of the colon. A centerline path is generated through the colon using the first and second distance transforms, starting from a point with a greatest distance to the source point as determined by the first distance transform, and adding points to the centerline path by selecting points with a greatest distance to the source point that are farthest from the wall of the colon using the second distance transform.

摘要翻译： 用于提取结肠中心线的方法包括从患者腹部的数字图像中分割冒号，选择冒号的一个极值点作为源点，计算冒号中每个点作为点的距离的第一距离变换 到源点，并计算冒号中每个点的第二距离变换，即点到冒号的壁点的最短距离。 通过使用第一和第二距离变换的冒号生成中心线路径，从距离源点距离最远的点开始，由第一距离变换确定，并通过选择具有最大距离的点将点添加到中心线路径 到距离冒号墙最远的源点，使用第二距离变换。

公开(公告)号：US08180135B2

公开(公告)日：2012-05-15

申请号：US12310940

申请日：2007-09-20

申请人： Stefan Böhm ,  Klaus Finkler ,  Bernhard Geiger

发明人： Stefan Böhm ,  Klaus Finkler ,  Bernhard Geiger

IPC分类号： G06K9/36

CPC分类号： G06T5/50 ,  G06T11/00 ,  G06T15/503 ,  G06T2200/24 ,  G06T2207/30004 ,  G06T2210/52

摘要： Modern image processing systems for the postprocessing of X-ray images require a large number of input parameters and take a great deal of time. So that calculations do not need to be made sequentially for different sets of input parameters, parallel processors are used, in which the same image processing program is executed in each case, but with different input parameters in each case. A large number of processed X-ray images is thus obtained, which in particular can also be displayed simultaneously. From the multiple processed x-ray images, a repeated postprocessing of a processed x-ray image can take place by mixing.

摘要翻译： 用于后期处理X射线图像的现代图像处理系统需要大量的输入参数并花费大量的时间。 因此，对于不同的输入参数集，不需要依次进行计算，因此使用并行处理器，其中在每种情况下执行相同的图像处理程序，但是在每种情况下具有不同的输入参数。 因此获得了大量的经处理的X射线图像，其特别地也可以同时显示。 从多个经处理的X射线图像中，可以通过混合来进行经处理的X射线图像的重复后处理。

公开(公告)号：US07889897B2

公开(公告)日：2011-02-15

申请号：US11438617

申请日：2006-05-22

申请人： Bernhard Geiger ,  Sandra Sudarsky

发明人： Bernhard Geiger ,  Sandra Sudarsky

IPC分类号： G06K9/00

CPC分类号： G09B23/285 ,  A61B1/31 ,  A61B5/055 ,  A61B5/4255 ,  A61B6/50 ,  G06T19/20 ,  G06T2210/41 ,  G06T2219/2012

摘要： A method and system for displaying unseen areas in guided two dimensional (2D) colon screening, includes calculating segmentation and colon surface for a colon; calculating a centerline for the colon; designating as a current focus point a current point of intersection of a current portion of the centerline and a current cross-sectional image of a colon in a current image plane; and extracting a colon surface portion in a connected colon component containing the current focus point; and marking voxels of the colon surface portion as a “seen” area. Unseen areas of the colon surface are calculated by subtracting seen areas from the total colon area of observation. The unseen areas may then be displayed.

摘要翻译： 用于在导向二维（2D）结肠筛查中显示未知区域的方法和系统，包括计算结肠的分割和结肠表面; 计算结肠的中心线; 将当前焦点指定为当前图像平面中的中心线的当前部分和结肠的当前横截面图像的当前交点; 以及提取包含所述当前聚焦点的连接的冒号分量中的结肠表面部分; 并将结肠表面部分的体素标记为“看到”区域。 通过从观察的总结肠区域中减去看到的面积来计算未见的结肠表面区域。 然后可以显示未看见的区域。