公开(公告)号：US20050048456A1

公开(公告)日：2005-03-03

申请号：US10915501

申请日：2004-08-09

Applicant: Christophe Chefd'hotel ,  Bernhard Geiger

Inventor： Christophe Chefd'hotel ,  Bernhard Geiger

IPC: G06T7/00 ,  G06K9/00 ,  G09B23/28

CPC classification number: G06T7/38 ,  G06T7/33 ,  G06T2207/10081 ,  G06T2207/10088 ,  G06T2207/30028

Abstract: A method for registration of virtual endoscopy images in first and second patient positions comprises performing colon segmentation and feature extraction, including centerline and colon surface data for each of the images; resampling the centerline and colon surface data; computing respective local descriptors; pairing point correspondences on the centerlines between the first and second images by minimal cost matching; extrapolating the centerline point correspondences to a 3-dimensional/3-dimensional (3D/3D) transformation between the first and second images. The method also includes selecting a position for a virtual endoscope in one of the images; associating an orthogonal reference frame with the virtual endoscope; and applying the 3D/3D transformation to the orthogonal reference frame so as to derive a corresponding transformed reference frame for the virtual endoscope in the other of the images.

Abstract translation: 用于在第一和第二患者位置注册虚拟内窥镜检查图像的方法包括执行冒号分割和特征提取，包括每个图像的中心线和结肠表面数据; 重新取样中线和结肠表面数据; 计算相应的局部描述符; 通过最小成本匹配在第一和第二图像之间的中心线上的配对点对应; 将中心线点对应于第一和第二图像之间的三维/三维（3D / 3D）变换。 该方法还包括在其中一个图像中选择虚拟内窥镜的位置; 将正交参考帧与虚拟内窥镜相关联; 以及将3D / 3D变换应用于正交参考帧，以便在另一个图像中导出虚拟内窥镜的对应变换的参考帧。

公开(公告)号：US6097994A

公开(公告)日：2000-08-01

申请号：US722708

申请日：1996-09-30

Applicant: Nassir Navab ,  Bernhard Geiger

Inventor： Nassir Navab ,  Bernhard Geiger

IPC: A61B19/00 ,  G06F19/00

CPC classification number: A61B90/11

Abstract: Apparatus for determining a proper insertion depth of a biopsy needle so that a sampling end of the needle just reaches to a designated target area within the body comprises at least one straight calibrated pointing device aligned to point through the selected point in a straight line passing through the designated target region. The pointing device exhibits first and second markers along its length such that respective images are formed on a first image plane by utilizing radiation from a radiation source, along with images corresponding to the selected point and the target area. The images are formed along a straight line in this order: (A) the first marker, (B) the second marker, (C) the selected point, and (D) the target region. The apparatus includes an arrangement for measuring distances on the image plane between images (A), (B), (C), and (D) and a calculator for calculating the cross ratio of the distances, whereby the proper insertion depth of the biopsy needle is determined.

Abstract translation: 用于确定活检针的适当插入深度的装置，使得针的采样端刚刚到达主体内的指定目标区域，包括至少一个直线校准的指示装置，其对齐以指向所选择的点，直线穿过 指定目标区域。 指示装置沿其长度展现第一和第二标记，使得通过利用来自辐射源的辐射以及对应于所选择的点和目标区域的图像，在第一图像平面上形成各自的图像。 图像沿着直线按顺序形成：（A）第一标记，（B）第二标记，（C）所选择的点，和（D）目标区域。 该装置包括用于测量图像（A），（B），（C）和（D）之间的图像平面上的距离的装置和用于计算距离的交叉比的计算器，由此活检的适当插入深度 针确定。

公开(公告)号：US09519981B2

公开(公告)日：2016-12-13

申请号：US13539863

申请日：2012-07-02

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

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

IPC: G09G5/02 ,  G06T11/20 ,  A61B5/00

CPC classification number: G06T11/206 ,  A61B5/0042 ,  A61B5/4064

Abstract: 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.

Abstract translation: 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：US08630387B2

公开(公告)日：2014-01-14

申请号：US13092349

申请日：2011-04-22

Applicant: Bernhard Geiger ,  Rainer Kaltschmidt ,  Peter Scheuering ,  Markus Schild

Inventor： Bernhard Geiger ,  Rainer Kaltschmidt ,  Peter Scheuering ,  Markus Schild

IPC: G01N23/04

CPC classification number: A61B6/5258 ,  A61B6/4233 ,  A61B6/4291 ,  A61B6/585 ,  G01N23/04 ,  G01N2223/303 ,  G01N2223/32 ,  G01N2223/50

Abstract: In order to optimize the recording time, provision is made of a method for recording an X-ray image using an X-ray system with an X-ray detector, an X-ray source, a system control, and a computational unit, wherein information relating to the relative direct radiation component in a reference X-ray image and information relating to the utilized recording geometry and/or the utilized primary X-ray dose and/or the utilized filtering is used to determine a relaxation time, during which a ghosting effect of the X-ray detector resulting from a preceding X-ray image decays at least in part, which relaxation time is adapted to the X-ray image to be recorded, and the determined relaxation time is utilized to actuate the recording of the X-ray image.

Abstract translation: 为了优化记录时间，提供了使用具有X射线检测器，X射线源，系统控制和计算单元的X射线系统记录X射线图像的方法，其中 使用与参考X射线图像中的相对直接辐射分量有关的信息和与所使用的记录几何和/或所利用的主X射线剂量和/或所使用的滤波有关的信息来确定弛豫时间，在此期间 由X射线检测器产生的X射线检测器的重影效果至少部分地衰减，该弛豫时间适于要记录的X射线图像，并且确定的弛豫时间被用于启动记录 X射线图像。

公开(公告)号：US08463011B2

公开(公告)日：2013-06-11

申请号：US13245018

申请日：2011-09-26

Applicant: Bernhard Geiger ,  Sandra Sudarsky

Inventor： Bernhard Geiger ,  Sandra Sudarsky

IPC: G06K9/00

CPC classification number: G06T7/66 ,  G06T2207/10081 ,  G06T2207/20041 ,  G06T2207/30028 ,  G06T2207/30172

Abstract: 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.

Abstract translation: 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：US08218848B2

公开(公告)日：2012-07-10

申请号：US12506333

申请日：2009-07-21

Applicant: Christophe Lenglet ,  Christophe Chefd'hotel ,  Bernhard Geiger ,  Tina Ehtiati ,  Jens Gühring

Inventor： Christophe Lenglet ,  Christophe Chefd'hotel ,  Bernhard Geiger ,  Tina Ehtiati ,  Jens Gühring

IPC: G06K9/00

CPC classification number: G06K9/342 ,  G06K2209/051 ,  G06T7/11 ,  G06T7/149 ,  G06T2207/10088 ,  G06T2207/30004

Abstract: A method for generating a positron emission tomography (PET) attenuation correction map from magnetic resonance (MR) images includes segmenting a 3-dimensional (3D) magnetic resonance (MR) whole-body image of a patient into low-signal regions, fat regions, and soft tissue regions; classifying the low-signal regions as either lungs, bones, or air by identifying lungs, identifying an abdominal station, and identifying a lower body station; and generating an attenuation map from the segmentation result by replacing the segmentation labels with corresponding representative attenuation coefficients.

Abstract translation: 用于从磁共振（MR）图像生成正电子发射断层摄影（PET）衰减校正图的方法包括将患者的三维（3D）磁共振（MR）全身图像分为低信号区域，脂肪区域 和软组织区域; 通过识别肺，识别腹部站和识别下半身站将低信号区域分类为肺，骨骼或空气; 以及通过用对应的代表衰减系数代替分割标签，从分割结果生成衰减图。

公开(公告)号：US20110261930A1

公开(公告)日：2011-10-27

申请号：US13092349

申请日：2011-04-22

Applicant: Bernhard Geiger ,  Rainer Kaltschmidt ,  Peter Scheuering ,  Markus Schild

Inventor： Bernhard Geiger ,  Rainer Kaltschmidt ,  Peter Scheuering ,  Markus Schild

IPC: H05G1/46

CPC classification number: A61B6/5258 ,  A61B6/4233 ,  A61B6/4291 ,  A61B6/585 ,  G01N23/04 ,  G01N2223/303 ,  G01N2223/32 ,  G01N2223/50

Abstract: In order to optimize the recording time, provision is made of a method for recording an X-ray image using an X-ray system with an X-ray detector, an X-ray source, a system control, and a computational unit, wherein information relating to the relative direct radiation component in a reference X-ray image and information relating to the utilized recording geometry and/or the utilized primary X-ray dose and/or the utilized filtering is used to determine a relaxation time, during which a ghosting effect of the X-ray detector resulting from a preceding X-ray image decays at least in part, which relaxation time is adapted to the X-ray image to be recorded, and the determined relaxation time is utilized to actuate the recording of the X-ray image.

Abstract translation: 为了优化记录时间，提供了使用具有X射线检测器，X射线源，系统控制和计算单元的X射线系统记录X射线图像的方法，其中 使用与参考X射线图像中的相对直接辐射分量有关的信息和与所使用的记录几何和/或所利用的主X射线剂量和/或所使用的滤波有关的信息来确定弛豫时间，在此期间 由X射线检测器产生的X射线检测器的重影效果至少部分地衰减，该弛豫时间适于要记录的X射线图像，并且确定的弛豫时间被用于启动记录 X射线图像。

公开(公告)号：US07991211B2

公开(公告)日：2011-08-02

申请号：US11968308

申请日：2008-01-02

Applicant: Bernhard Geiger ,  Sandra Sudarsky

Inventor： Bernhard Geiger ,  Sandra Sudarsky

IPC: G06K9/00 ,  A61B5/05

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

Abstract: 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.

Abstract translation: 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：US07822461B2

公开(公告)日：2010-10-26

申请号：US10888368

申请日：2004-07-09

Applicant: Bernhard Geiger ,  Atilla Peter Kiraly ,  David P. Naidich ,  Carol L. Novak

Inventor： Bernhard Geiger ,  Atilla Peter Kiraly ,  David P. Naidich ,  Carol L. Novak

IPC: A61B5/05

CPC classification number: G06T19/003 ,  A61B34/10 ,  A61B90/36 ,  A61B2090/374 ,  G06T2210/41

Abstract: A system and method for endoscopic path planning is provided. The method comprises: identifying a target in a lung, wherein the target is located in a peripheral airway of the lung; generating an endoscopic path to the target, wherein a peripheral artery is used as a surrogate for the peripheral airway; and viewing the endoscopic path.

Abstract translation: 提供了内窥镜路径规划的系统和方法。 该方法包括：识别肺中的靶，其中所述靶位于肺的外周气道中; 产生到目标的内窥镜路径，其中外围动脉用作周边气道的替代物; 并观察内窥镜路径。

公开(公告)号：US07680247B2

公开(公告)日：2010-03-16

申请号：US11860924

申请日：2007-09-25

Applicant: Franz Atzinger ,  Bernhard Geiger ,  Heinz Hornegger ,  Clemens Joerger

Inventor： Franz Atzinger ,  Bernhard Geiger ,  Heinz Hornegger ,  Clemens Joerger

IPC: H05G1/58

CPC classification number: A61B6/06 ,  A61B6/4464 ,  A61B6/487 ,  A61B6/5211 ,  G06F19/321

Abstract: A combination radiography and fluoroscopy system includes in one embodiment a radiography radiation generator and radiography radiation receiver, a fluoroscopy radiation generator and fluoroscopy radiation receiver, and a single computer system connected to receive signals from the radiography radiation receiver and fluoroscopy radiation receiver. The single computer system includes signal processing paths for the radiography signal and for the fluoroscopy signal wherein some processes or modules are common between the paths and some are path specific. The path specific processes are preferably connected in parallel. Common controls and a common interface are provided to the monitor connected to the computer system. An alternative uses a single radiation receiver for both radiography and fluoroscopy, along with the single computer system Another alternative provides for separate computers for signal processing of the radiography and fluoroscopy signals, the two computers running substantially identical signal processing programs.

Abstract translation: 组合放射摄影和透视系统包括在一个实施例中的放射线照相辐射发生器和放射线照相辐射接收器，荧光透视辐射发生器和荧光透视辐射接收器，以及连接以从射线照相辐射接收器和荧光透视辐射接收器接收信号的单个计算机系统。 单个计算机系统包括用于放射线照相信号和荧光透视信号的信号处理路径，其中一些过程或模块在路径之间是共同的，一些是路径特定的。 路径特定过程优选并联连接。 公共控制和公共接口提供给连接到计算机系统的监视器。 一种替代方案使用单个辐射接收器用于射线照相和荧光透视，以及单个计算机系统。另一种替代方案提供用于放射线照相和荧光透视信号的信号处理的单独计算机，两台计算机运行基本相同的信号处理程序。