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公开(公告)号：US20060142984A1
公开(公告)日：2006-06-29
申请号：US10543394
申请日：2004-01-23
申请人： Jurgen Weese , Volker Rasche , Stewart Young , Babak Movassaghi
发明人： Jurgen Weese , Volker Rasche , Stewart Young , Babak Movassaghi
CPC分类号： G06T7/11 , G06T7/55 , G06T2207/10121 , G06T2207/20156 , G06T2207/30101
摘要： The invention relates to a method for the computer-aided reconstruction of a three-dimensional anatomical object (3) from diagnostic image data. First of all, a diagnostic image data set of the object (3) is acquired. Then a seed point (5) is set, starting from which the object is reconstructed within a reconstruction volume (4). Thereafter, an adjacent point of the reconstruction volume (4) likewise belonging to the object (3) is located in accordance with a propagation criterion, which is calculated by means of a mathematical analysis of local areas (6, 7), assigned to the point concerned, of the image data set Reconstruction of the three-dimensional structure of the object (3) is then performed within the reconstruction volume (4) by multiple repetition of this method step and propagation along the located adjacent points. To apply such a reconstruction method to image data obtained by means of rotational X-ray imaging, wherein a plurality of two-dimensional projection images (1, 2) are recorded from different projection directions, the invention proposes that the propagation criterion be calculated by subjecting the local image areas (6, 7) of the two-dimensional projection images (1, 2) in each case individually to the mathematical analysis.
摘要翻译： 本发明涉及一种用于从诊断图像数据计算机辅助重构三维解剖体（3）的方法。 首先，获取对象（3）的诊断图像数据组。 然后设置种子点（5），从重建体积（4）中重建对象开始。 此后，同样属于对象（3）的重构体积（4）的相邻点根据通过局部区域（6,7）的数学分析计算的传播标准来定位，分配给 （3）的三维结构的重建然后通过该方法步骤的多次重复并且沿着定位的相邻点进行传播，在重建体积（4）内执行。 为了将这种重建方法应用于通过旋转X射线成像获得的图像数据，其中从不同的投影方向记录多个二维投影图像（1,2），本发明提出了传播标准由 在每种情况下对二维投影图像（1,2）的局部图像区域（6,7）进行数学分析。
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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
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。
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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。
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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。
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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。
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公开(公告)号：US08098919B2
公开(公告)日：2012-01-17
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
CPC分类号： G06T11/005 , G06T7/70 , G06T2211/412
摘要： A method for the three-dimensional reconstruction of an object, or its surroundings, in a moving body volume of a patient includes obtaining a series of X-ray projection photographs produced from different directions, with a relevant ECG phase or respiration being recorded simultaneously. Projection photographs of the moving body volume are transformed such that the images of feature points that are located on the projection 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 aligned onto the reference positions, three-dimensional reconstruction of the object can subsequently take place.
摘要翻译： 用于在患者的移动体体积中对象或其周围的三维重建的方法包括获得从不同方向产生的一系列X射线投影照片，同时记录相关ECG阶段或呼吸。 变换运动体积的投影照片，使得位于投影照片上的特征点的图像分别在特征点的随机设置的空间参考位置被投影的地方休息。 随着投影照片对准到参考位置，随后可以进行物体的三维重建。
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公开(公告)号：US20100014726A1
公开(公告)日：2010-01-21
申请号：US12302897
申请日：2007-05-21
CPC分类号： A61B6/504 , A61B6/032 , A61B6/4085 , A61B6/481 , A61B6/5288 , A61B6/541 , G06T3/0037 , G06T7/20 , G06T2207/10081 , G06T2207/20016 , G06T2207/30101
摘要： In three-dimensional rotational x-ray coronary imaging problems may arise when estimating the motion of small vessels. According to an exemplary embodiment of the present invention, an examination apparatus is provided which is adapted for performing a hierarchical motion estimation by global affine transformation for every heart phase, followed by vessel branch selective affine and non-affine transformations. This may provide for an improved image quality.
摘要翻译： 在估计小血管运动时可能出现三维旋转X射线冠状动脉成像问题。 根据本发明的示例性实施例，提供了一种检查装置，其适用于通过用于每个心脏相的全局仿射变换执行分层运动估计，随后是血管分支选择仿射和非仿射变换。 这可以提供改进的图像质量。
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公开(公告)号：US07574026B2
公开(公告)日：2009-08-11
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 provides a method for 3D modeling of a three-dimensional tubular structure of an examination object from 2D projection images (D) of the structure taken from different projection directions. The method has the following steps: reconstruction of a 3D image from the 2D projection images (D); selection of at least one 3D central line point (MO) in the 3D image, said 3D central line point being located in the structure; segmentation of 3D central line points (M) of the structure in the 3D image; forward projection of the 3D central line points (M), which have been segmented in the 3D image, into 2D projection images (D′); determination of border points of the structure in the 2D projection images (D′) on the basis of 3D central line points (Z) that have been projected in; and back-projection of the border points from the 2D projection image (D′) into the 3D image.
摘要翻译： 本发明提供一种用于从取自不同投影方向的结构的2D投影图像（D）对检查对象的三维管状结构进行3D建模的方法。 该方法具有以下步骤：从2D投影图像（D）重建3D图像; 选择所述3D图像中的至少一个3D中心线点（MO），所述3D中心线点位于所述结构中; 分割3D图像中三维中心线（M）的结构; 已经在3D图像中分割的3D中心线点（M）的向前投影成2D投影图像（D'）; 根据已经投影的3D中心线点（Z）确定2D投影图像（D'）中的结构的边界点; 并将边界点从2D投影图像（D'）反投影到3D图像中。
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公开(公告)号：US20060250386A1
公开(公告)日：2006-11-09
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： G06T15/00
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（C SUB> A ）。 在其他投影图像中的用于所述参考点（C SUB）的沿着线极线（E SUB B，E C C）的灰度值分布（ B，C）然后投影在参考点（C SUB）上的投影线（L）上，并且以点一点的形式加到其中以形成总和曲线（S）。 总和简档（S）在属于参考点的空间点（C 3D 3D）的位置处具有例如灰度值最小值的极端（C A ）。 以这种方式，可以从X射线投影半自动重建血管树。
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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。
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