公开(公告)号：US08045677B2

公开(公告)日：2011-10-25

申请号：US12441613

申请日：2007-09-17

申请人： Babak Movassaghi ,  Robert Manzke ,  Joel Alberto Garcia

发明人： Babak Movassaghi ,  Robert Manzke ,  Joel Alberto Garcia

IPC分类号： G01N23/04 ,  G01N23/083

CPC分类号： A61B6/0457 ,  A61B6/04 ,  A61B6/102 ,  A61B6/4441 ,  A61B6/4458 ,  A61B6/481 ,  A61B6/504 ,  A61B6/542 ,  A61B6/544 ,  A61B6/583

摘要： It is described a method for acquiring a series of two-dimensional X-ray attenuation data of an object under examination (310) by means of an X-ray imaging apparatus (100) having a rotatable scanning unit (301). In order to increase the angular range of the scanning unit (301), when a region of interest (HOa) located not in the center of the object (310) is examined the object under examination (310) is shifted such that the region of interest is temporarily positioned outside the center of rotation. By coupling the rotational movement of the scanning unit (301) with the translative movement of the object (310) in a synchronized manner a collision between the scanning unit (301) and the object (310) can be effectively avoided. By employing an automated motorized object table (312) a precise pre-determined movement of the object (310) can be achieved during the data acquisition. By using an appropriate phantom based calibration procedure carried out with the same table movements known three-dimensional reconstruction algorithm can be directly applied in order to generate a three-dimensional representation of the region of interest (110a).

摘要翻译： 描述了一种通过具有可旋转扫描单元（301）的X射线成像设备（100）获取被检查物体（310）的一系列二维X射线衰减数据的方法。 为了增加扫描单元（301）的角度范围，当检查位于物体（310）中心的感兴趣区域（110a）被检查时，检查对象（310）被移动，使得区域 兴趣被暂时定位在旋转中心之外。 通过将扫描单元（301）的旋转运动与物体（310）的平移运动以同步的方式耦合，可以有效地避免扫描单元（301）和物体（310）之间的碰撞。 通过采用自动电动对象表（312），可以在数据采集期间实现物体（310）的精确的预定移动。 通过使用用相同的表移动执行的适当的基于幻影的校准程序，可以直接应用已知的三维重建算法，以便产生感兴趣区域（110a）的三维表示。

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。

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。

公开(公告)号：US20100027742A1

公开(公告)日：2010-02-04

申请号：US12441613

申请日：2007-09-17

申请人： Babak Movassaghi ,  Robert Manzke ,  Joel Alberto Garcia

发明人： Babak Movassaghi ,  Robert Manzke ,  Joel Alberto Garcia

IPC分类号： G01N23/04 ,  A61B6/04 ,  H05G1/02

CPC分类号： A61B6/0457 ,  A61B6/04 ,  A61B6/102 ,  A61B6/4441 ,  A61B6/4458 ,  A61B6/481 ,  A61B6/504 ,  A61B6/542 ,  A61B6/544 ,  A61B6/583

摘要： It is described a method for acquiring a series of two-dimensional X-ray attenuation data of an object under examination (310) by means of an X-ray imaging apparatus (100) having a rotatable scanning unit (301). In order to increase the angular range of the scanning unit (301), when a region of interest (HOa) located not in the center of the object (310) is examined the object under examination (310) is shifted such that the region of interest is temporarily positioned outside the center of rotation. By coupling the rotational movement of the scanning unit (301) with the translative movement of the object (310) in a synchronized manner a collision between the scanning unit (301) and the object (310) can be effectively avoided. By employing an automated motorized object table (312) a precise pre-determined movement of the object (310) can be achieved during the data acquisition. By using an appropriate phantom based calibration procedure carried out with the same table movements known three-dimensional reconstruction algorithm can be directly applied in order to generate a three-dimensional representation of the region of interest (110a).

摘要翻译： 描述了一种通过具有可旋转扫描单元（301）的X射线成像设备（100）获取被检查物体（310）的一系列二维X射线衰减数据的方法。 为了增加扫描单元（301）的角度范围，当检查位于物体（310）中心的感兴趣区域（110a）被检查时，检查对象（310）被移动，使得区域 兴趣被暂时定位在旋转中心之外。 通过将扫描单元（301）的旋转运动与物体（310）的平移运动以同步的方式耦合，可以有效地避免扫描单元（301）和物体（310）之间的碰撞。 通过采用自动电动对象表（312），可以在数据采集期间实现物体（310）的精确的预定移动。 通过使用用相同的表移动执行的适当的基于幻影的校准程序，可以直接应用已知的三维重建算法，以便产生感兴趣区域（110a）的三维表示。

公开(公告)号：US20100014726A1

公开(公告)日：2010-01-21

申请号：US12302897

申请日：2007-05-21

申请人： Dirk Schaefer ,  Andreas Engler ,  Babak Movassaghi ,  Volker Rasche ,  Michael Grass

发明人： Dirk Schaefer ,  Andreas Engler ,  Babak Movassaghi ,  Volker Rasche ,  Michael Grass

IPC分类号： G06K9/00 ,  G06K9/36

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。

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。

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

IPC分类号： G06G7/48 ,  G06G7/58 ,  G06K9/00

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。

公开(公告)号：US08175356B2

公开(公告)日：2012-05-08

申请号：US12513370

申请日：2007-10-24

申请人： Babak Movassaghi ,  Michael Grass ,  Dirk Schaefer

发明人： Babak Movassaghi ,  Michael Grass ,  Dirk Schaefer

IPC分类号： G06K9/00

CPC分类号： A61B6/5217 ,  A61B6/027 ,  A61B6/503 ,  A61B6/504 ,  A61B6/541 ,  G06T7/254 ,  G06T2207/30048

摘要： For the reconstruction of the coronary arteries from rotational coronary angiography data, a crucial point is the selection of the optimal cardiac phase for data reconstruction. According to an exemplary embodiment of the present invention, an automatic approach for deriving optimal reconstruction windows is provided by fully automatically selecting the optimal cardiac phase on the basis of a delayed acquisition protocol where at least one heart phase needs to be acquired in a static projection geometry.

摘要翻译： 对于从旋转冠状动脉造影数据重建冠状动脉，关键点是数据重建的最佳心脏相位的选择。 根据本发明的示例性实施例，通过基于延迟获取协议完全自动选择最佳心脏相位来提供用于导出最佳重建窗口的自动方法，其中需要在静态投影中获取至少一个心脏相位 几何。

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。

公开(公告)号：US20100099979A1

公开(公告)日：2010-04-22

申请号：US12444057

申请日：2007-09-20

申请人： Gert Schoonenberg ,  Onno Wink ,  Babak Movassaghi

发明人： Gert Schoonenberg ,  Onno Wink ,  Babak Movassaghi

IPC分类号： A61B5/05 ,  G06K9/62 ,  G01N23/04

CPC分类号： G06T7/0012 ,  G06T19/00 ,  G06T2207/30101 ,  G06T2219/008

摘要： It is described a virtual pullback as a visualization and quantification tool that allows an interventional cardiologist to easily assess stent expansion. The virtual pullback visualizes the stent and/or the vessel lumen similar to an Intravascular Ultrasound (IVUS) pullback. The virtual pullback is performed in volumetric data along a reference line. The volumetric data can be a reconstruction of rotational 2D X-ray attenuation data. Planes perpendicular to the reference line are visualized as the position along the reference line changes. This view is for interventional cardiologists a very familiar view as they resemble IVUS data and may show a section plane through a vessel lumen or a stent. In these perpendicular section planes automatic measurements, such as minimum and maximum diameter, and cross sectional area of the stent can be calculated and displayed. Combining these 2D measurements allows also volumetric measurements to be calculated and displayed.

摘要翻译： 它被描述为虚拟回拉作为可视化和量化工具，允许介入心脏病专家轻松评估支架扩张。 虚拟回拉可视化与血管内超声（IVUS）回撤相似的支架和/或血管腔。 沿着参考线的体积数据执行虚拟回调。 体积数据可以是旋转2D X射线衰减数据的重建。 垂直于参考线的平面可视化为沿着参考线的位置发生变化。 这种观点对于介入心脏病专家来说非常熟悉，因为它们类似于IVUS数据，并且可以通过血管腔或支架显示剖面。 在这些垂直截面中，可以计算和显示自动测量，例如支架的最小和最大直径以及横截面面积。 结合这些2D测量，还可以计算和显示体积测量。