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    Analysis of a multi-dimensional structure
    2.
    发明申请
    Analysis of a multi-dimensional structure 失效
    分析多维结构

    公开(公告)号：US20050185831A1

    公开(公告)日：2005-08-25

    申请号：US10516151

    申请日：2003-05-21

    申请人： Volker Rasche ,  Babak Movassaghi ,  Michael Grass

    发明人： Volker Rasche ,  Babak Movassaghi ,  Michael Grass

    IPC分类号： A61B6/02 ,  A61B6/00 ,  G06T7/00 ,  G06T7/60 ,  G06K9/00

    CPC分类号： G06T7/60 ,  G06T7/593 ,  G06T2207/30101 ,  Y10S128/922

    摘要： A method is provided for analysis of a multi-dimensional structure which includes a tubular structure from two-dimensional datasets for respective pre-determined projection directions. A pair of corresponding initial projected centre points of the tubular structure is identified in two respective initial and further two-dimensional datasets. Projected edges of the tubular structure in said initial two-dimensional datasets and in said further two-dimensional dataset near the respective projected centre points are identified. A local size of the tubular strucwur is derived at the three-dimensional spatial position of the centre point of the tubular structure from said projected edges and the predetermined projection directions.

    摘要翻译： 提供了一种用于分析多维结构的方法，其包括用于各个预定投影方向的二维数据集的管状结构。 在两个相应的初始和进一步的二维数据集中识别管状结构的一对相应的初始投影中心点。 识别所述初始二维数据集中的所述管状结构的投影边缘和在相应的投影中心点附近的所述另外的二维数据集中。 在管状结构的中心点从所述投影边缘和预定投影方向的三维空间位置导出管状结构的局部尺寸。

    Analysis of a multi-dimensional structure
    3.
    发明授权
    Analysis of a multi-dimensional structure 失效
    分析多维结构

    公开(公告)号：US07706589B2

    公开(公告)日：2010-04-27

    申请号：US10516151

    申请日：2003-05-21

    申请人： Volker Rasche ,  Babak Movassaghi ,  Michael Grass

    发明人： Volker Rasche ,  Babak Movassaghi ,  Michael Grass

    IPC分类号： G06K9/00

    CPC分类号： G06T7/60 ,  G06T7/593 ,  G06T2207/30101 ,  Y10S128/922

    摘要： A method is provided for analysis of a multi-dimensional structure which includes a tubular structure from two-dimensional datasets for respective pre-determined projection directions. A pair of corresponding initial projected centre points of the tubular structure is identified in two respective initial and further two-dimensional datasets. Projected edges of the tubular structure in said initial two-dimensional datasets and in said further two-dimensional dataset near the respective projected centre points are identified. A local size of the tubular structure is derived at the three-dimensional spatial position of the centre point of the tubular structure from said projected edges and the predetermined projection directions.

    摘要翻译： 提供了一种用于分析多维结构的方法，其包括用于各个预定投影方向的二维数据集的管状结构。 在两个相应的初始和进一步的二维数据集中识别管状结构的一对相应的初始投影中心点。 识别所述初始二维数据集中的所述管状结构的投影边缘和在相应的投影中心点附近的所述另外的二维数据集中。 在管状结构的中心点从所述投影边缘和预定投影方向的三维空间位置导出管状结构的局部尺寸。

    3D-2D Adaptive Shape Model Supported Motion Compensated Recnstruction
    4.
    发明申请
    3D-2D Adaptive Shape Model Supported Motion Compensated Recnstruction 有权
    3D-2D自适应形状模型支持运动补偿重建

    公开(公告)号：US20080218510A1

    公开(公告)日：2008-09-11

    申请号：US11997340

    申请日：2006-07-12

    申请人： Michael Grass ,  Volker Rasche ,  Dirk Schaefer

    发明人： Michael Grass ,  Volker Rasche ,  Dirk Schaefer

    IPC分类号： G06T15/00

    CPC分类号： G06T11/005 ,  G06T2211/412

    摘要： A method for generating or reconstruction of three-dimensional (3D) images corresponding to a structure of interest (60) including: acquiring a plurality of image projections corresponding to a structure of interest (60); applying a shape model (66) at a selected 3D seed point (64); and adapting the shape model (66) to represent the structure of interest (60), yielding an adapted shape model. A system for generation and reconstruction of three-dimensional (3D) images. The system (10) includes: an imaging system (12) configured to provide projection data corresponding to a structure of interest (60); and a controller (50) in operable communication with the imaging system (50). The controller (50) is configured to: receive the projection data, (64); apply a shape model (66) at a selected 3D seed point (64); and adapt the shape model (66) to represent the structure of interest (60), thereby yielding an adapted shape model.

    摘要翻译： 一种用于生成或重建对应于感兴趣结构（60）的三维（3D）图像的方法，包括：获取与感兴趣结构相对应的多个图像投影（60）; 在选定的3D种子点（64）处应用形状模型（66）; 以及使形状模型（66）适应于表示感兴趣的结构（60），产生适应的形状模型。 一种用于三维（3D）图像的生成和重建的系统。 系统（10）包括：成像系统（12），被配置为提供对应于感兴趣结构（60）的投影数据; 以及与成像系统（50）可操作地通信的控制器（50）。 控制器（50）被配置为：接收投影数据（64）; 在选定的3D种子点（64）上应用形状模型（66）; 并适应形状模型（66）来表示感兴趣的结构（60），从而产生适应的形状模型。

    3D-2D adaptive shape model supported motion compensated reconstruction
    5.
    发明授权
    3D-2D adaptive shape model supported motion compensated reconstruction 有权
    3D-2D自适应形状模型支持运动补偿重建

    公开(公告)号：US08446408B2

    公开(公告)日：2013-05-21

    申请号：US11997340

    申请日：2006-07-12

    申请人： Michael Grass ,  Volker Rasche ,  Dirk Schaefer

    发明人： Michael Grass ,  Volker Rasche ,  Dirk Schaefer

    IPC分类号： G06T15/00

    CPC分类号： G06T11/005 ,  G06T2211/412

    摘要： A method for generating or reconstruction of three-dimensional (3D) images corresponding to a structure of interest (60) including: acquiring a plurality of image projections corresponding to a structure of interest (60); applying a shape model (66) at a selected 3D seed point (64); and adapting the shape model (66) to represent the structure of interest (60), yielding an adapted shape model. A system for generation and reconstruction of three-dimensional (3D) images. The system (10) includes: an imaging system (12) configured to provide projection data corresponding to a structure of interest (60); and a controller (50) in operable communication with the imaging system (50). The controller (50) is configured to: receive the projection data, (64); apply a shape model (66) at a selected 3D seed point (64); and adapt the shape model (66) to represent the structure of interest (60), thereby yielding an adapted shape model.

    摘要翻译： 一种用于生成或重建对应于感兴趣结构（60）的三维（3D）图像的方法，包括：获取与感兴趣结构相对应的多个图像投影（60）; 在选定的3D种子点（64）处应用形状模型（66）; 以及使形状模型（66）适应于表示感兴趣的结构（60），产生适应的形状模型。 一种用于三维（3D）图像的生成和重建的系统。 系统（10）包括：成像系统（12），被配置为提供对应于感兴趣结构（60）的投影数据; 以及与成像系统（50）可操作地通信的控制器（50）。 控制器（50）被配置为：接收投影数据（64）; 在选定的3D种子点（64）上应用形状模型（66）; 并适应形状模型（66）来表示感兴趣的结构（60），从而产生适应的形状模型。

    Device to Generate a Three-Dimensional Image of a Moved Object
    6.
    发明申请
    Device to Generate a Three-Dimensional Image of a Moved Object 审中-公开
    用于生成移动对象的三维图像的设备

    公开(公告)号：US20070211849A1

    公开(公告)日：2007-09-13

    申请号：US10561456

    申请日：2004-06-16

    申请人： Babak Movassaghi ,  Volker Rasche

    发明人： Babak Movassaghi ,  Volker Rasche

    IPC分类号： G01N23/083 ,  A61B6/00

    CPC分类号： G06T11/005 ,  G06T2211/404 ,  G06T2211/412

    摘要： The invention relates to a method and a device for generating a threedimensional image of an object (9) such as in particular the heart, from a series of (X-ray) projection pictures (Pi, Pj, Pk, Pl). For the reconstruction only those projection pictures are used in which the projection lines (li, lk, ll) of a characteristic object feature intersect at approximately the same spatial point (r0). The characteristic object feature can in particular be a vessel branch which can easily be located on the projection pictures.

    摘要翻译： 本发明涉及一种用于从一系列（X射线）投影图像（P）中生成诸如特别是心脏的物体（9）的三维图像的方法和装置 P＆lt; SUB＆gt;，P＆gt;＆gt;，P＆lt; 1＆gt;）。 对于重建，仅使用投影图像，其中特征对象特征的投影线（l，i，l，k，l，l） 在大致相同的空间点（ r <0> ）处相交。 特征对象特征可以特别地是可以容易地位于投影图像上的血管分支。

    Method for the 3d modeling of a tubular structure
    7.
    发明申请
    Method for the 3d modeling of a tubular structure 有权
    管状结构三维建模的方法

    公开(公告)号：US20060159326A1

    公开(公告)日：2006-07-20

    申请号：US10545184

    申请日：2004-01-23

    申请人： Volker Rasche ,  Babak Movassaghi

    发明人： Volker Rasche ,  Babak Movassaghi

    IPC分类号： G06K9/00

    CPC分类号： G06T11/008 ,  G06T17/10 ,  G06T2211/404 ,  G06T2211/412

    摘要： The invention relates to a method for the 3D modeling of a three-dimensional tubular structure of an examination object from a number of 2D projection images (D) of the tubular structure (H) taken from different projection directions. In order to be able to implement such a method with considerably less user interaction while retaining the same degree of accuracy, the following steps are proposed according to the invention: a) reconstruction of a 3D image (B) from the 2D projection images (D), b) selection of at least one 3D central line point (MO) in the 3D image (B), said 3D central line point being located in the tubular structure (H), c) segmentation of other 3D central line points (M) of the tubular structure (H) in the 3D image (B), d) forward projection of the 3D central line points (M), which have been segmented in the 3D image (B), into the 2D projection images (D′), e) determination of border points of the tubular structure (H) in the 2D projection images (D′) on the basis of the 3D central line points (Z) that have been projected in, and f) back-projection of the border points from the 2D projection images (D′) into the 3D image (B).

    摘要翻译： 本发明涉及一种从不同投影方向取得的管状结构（H）的多个2D投影图像（D）的三维管状结构的三维建模方法。 为了能够在保持相同程度的精度的同时实现这种具有相当少的用户交互的方法，根据本发明提出了以下步骤：a）从2D投影图像（D）重建3D图像（B） ），b）选择3D图像（B）中的至少一个3D中心线点（MO），所述3D中心线点位于管状结构（H）中，c）分割其他3D中心线点（M ）D）3D图像（B）中的管状结构（H）的向前投影，d）已经被分割在3D图像（B）中的3D中心线点（M）向前投影到2D投影图像 ），e）基于已经投影的3D中心线点（Z），在2D投影图像（D'）中确定管状结构（H）的边界点，以及f）反投影 从2D投影图像（D'）到3D图像（B）的边界点。

    Device and method for generating a three dimensional vascular model
    8.
    发明授权
    Device and method for generating a three dimensional vascular model 失效
    用于产生三维血管模型的装置和方法

    公开(公告)号：US07646900B2

    公开(公告)日：2010-01-12

    申请号：US10567221

    申请日：2004-08-09

    申请人： Babak Movassaghi ,  Volker Rasche

    发明人： Babak Movassaghi ,  Volker Rasche

    IPC分类号： G06K9/00

    CPC分类号： G06K9/20 ,  G06K2009/00932 ,  G06K2209/05 ,  G06T7/55 ,  G06T2207/30101

    摘要： The invention relates to a method for the reconstruction of a three-dimensional model of a vascular tree from two-dimensional X-ray projection images (A, B, C) that are taken from different spatial directions. On a first projection image (A) at least one reference point (CA) is specified. The gray-value profiles along the epipolar lines (EB, EC) for said reference point (CA) in other projection images (B, C) are then projected on the projection line (L) of the reference point (CA) and added there punctiformly to form a sum profile (S). The sum profile (S) has an extreme, for example, a gray-value minimum, at the position of the space point (C3D) belonging to the reference point (CA). In this way, it is possible to reconstruct semiautomatically a vascular tree from X-ray projections.

    摘要翻译： 本发明涉及从不同空间方向拍摄的二维X射线投影图像（A，B，C）重建血管树的三维模型的方法。 在第一投影图像（A）上指定至少一个参考点（CA）。 然后将其他投影图像（B，C）中的所述参考点（CA）的沿着对极线（EB，EC）的灰度值分布投影到参考点（CA）的投影线（L）上并在其中添加 以形成一个总和分布（S）。 在属于参考点（CA）的空间点（C3D）的位置处，总和曲线（S）具有极端，例如灰度值最小值。 以这种方式，可以从X射线投影半自动重建血管树。

    Motion-corrected three-dimensional volume imaging method
    9.
    发明授权
    Motion-corrected three-dimensional volume imaging method 有权
    运动校正三维体积成像方法

    公开(公告)号：US07426256B2

    公开(公告)日：2008-09-16

    申请号：US10549267

    申请日：2004-03-12

    申请人： Volker Rasche ,  Babak Movassaghi ,  Marcel Boosten

    发明人： Volker Rasche ,  Babak Movassaghi ,  Marcel Boosten

    IPC分类号： A61B6/03

    CPC分类号： A61B6/5264 ,  A61B6/00 ,  A61B6/503 ,  A61B6/508 ,  A61B6/541 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612 ,  G06T11/005 ,  G06T2211/404 ,  G06T2211/412

    摘要： An X-ray imaging method forms a set of a plurality of two-dimensional X-Ray projection images of a medical or veterinary object to be examined through a scanning rotation by an X-Ray source viz à viz the object. Such X-Ray images are acquired at respective predetermined time instants with respect to a functionality process produced by the object. From said set of X-Ray projection images by back-projection a three-dimensional volume image of the object is reconstructed. In particular, an appropriate motion correction is derived for the respective two-dimensional images, and subsequently as based on a motion vector field from the various corrected two-dimensional images the intended three-dimensional volume is reconstructed.

    摘要翻译： X射线成像方法通过由X射线源进行扫描旋转来形成待检查的医疗或兽医物体的多个二维X射线投影图像的集合，即X射线源。 相对于由对象产生的功能处理，在相应的预定时刻获取这样的X射线图像。 通过反投影从所述X射线投影图像组中重构对象的三维体积图像。 具体地，针对相应的二维图像导出适当的运动校正，并且随后基于来自各种校正的二维图像的运动矢量场来重构预期的三维体积。

    Three-Dimensional Reconstruction of an Object from Projection Photographs
    10.
    发明申请
    Three-Dimensional Reconstruction of an Object from Projection Photographs 有权

    公开(公告)号：US20070263916A1

    公开(公告)日：2007-11-15

    申请号：US10595875

    申请日：2004-11-16

    申请人： Volker Rasche ,  Babak Movassaghi

    发明人： Volker Rasche ,  Babak Movassaghi

    IPC分类号： G06K9/00 ,  G06K9/36

    CPC分类号： G06T11/005 ,  G06T7/70 ,  G06T2211/412

    摘要： The invention relates to a method for the three-dimensional reconstruction of an object such as for example a stent (5) in the coronary vessels of a patient. In the course of this, a series of X-ray projection photographs (A,) are produced from different directions, with the relevant ECG phase (E,) being recorded simultaneously. On the projection photographs (A,), the position of feature points (R, Q) is segmented (a). The photographs (A,) are furthermore allocated (b) into classes (Kp) according to their belonging to different sections (Epcl) of the heartbeat phase. For each of these classes, the corresponding spatial position ((x,y,z)Qp) of the feature points is established (e). In the next step (d), from the positions of the feature points (R, Q) that are now known for various heartbeat phases, the displacement vectors (SRp-m, SQp-m) or generally the transformations (Epm) are calculated which link (d) the positions of the feature points for different heartbeat phases (p, m). With the aid of these transformations, in a last step (e) a three-dimensional reconstruction can then be carried out for the whole stent (5) or its surroundings, by referring back to all the X-ray projection photographs from different heartbeat phases (p1, p2). In an alternative embodiment of the invention, projection photographs of a moving body volume are transformed such that the images of feature points that are located on the photographs respectively come to rest at a place on which (randomly) set spatial reference positions for the feature points are projected. With the projection photographs that are thus aligned onto the reference positions, three-dimensional reconstruction of the object can subsequently take place.