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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：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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14.发明授权System and method for enabling selection of an image registration transformation 有权允许选择图像配准变换的系统和方法公开(公告)号：US08380007B2
公开(公告)日：2013-02-19
申请号：US12096648
申请日：2006-12-05
IPC分类号： G06K9/32
CPC分类号： G06T7/38 , G06T7/35 , G06T2207/30004
摘要： System and method for enabling intra-operative selection of an image registration transformation for use in displaying a first image dataset and a second image dataset in correspondence with one another. Image dataset acquisition devices (12, 14) obtain the first and second image datasets. A similarity function indicative of a likelihood that the first and second image datasets are in correspondence with one another is computed by a processor (16) and then a ranking of each of a plurality of local maxima of the similarity function is determined. Registration transformations derived from a plurality of the local maxima are displayed on a display (18), and using a user-interface (22), a physician can select each registration transformation to ascertain visually whether it is the clinically-optimal registration transformation for subsequent use.
摘要翻译： 用于使得能够在操作中选择图像配准变换以用于相互对应地显示第一图像数据集和第二图像数据集的系统和方法。 图像数据集获取装置（12,14）获得第一和第二图像数据集。 由处理器（16）计算指示第一和第二图像数据集彼此对应的可能性的相似度函数，然后确定相似度函数的多个局部最大值中的每一个的等级。 从多个本地最大值导出的登记变换被显示在显示器（18）上，并且使用用户界面（22），医师可以选择每个注册变换以在视觉上确定是否是用于后续的临床优化注册变换 使用。
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公开(公告)号：US08108029B2
公开(公告)日：2012-01-31
申请号：US11997421
申请日：2006-07-12
申请人： Volker Rasche
发明人： Volker Rasche
IPC分类号： A61B5/05
CPC分类号： A61B5/06 , A61B34/20 , A61B90/10 , A61B90/37 , A61B2034/105 , A61B2034/2051 , A61B2034/2068 , A61B2090/376 , A61B2090/3954 , A61B2090/3983
摘要： A method and system for navigation of a medical instrument, including: introducing at least three reference device(s) disposed to at least three reference locations; employing an imaging and guidance system to acquire a plurality of image projections corresponding to a desired anatomy including the reference devices, the plurality of image projections being sufficient to permit generating a three-dimensional modeling or reconstruction images corresponding to the reference devices. The method also includes measuring a position of the reference devices; formulating a transformation matrix based on comparing positions of the reference devices computed from the modeling or reconstruction images with the measured positions of the reference devices; and superimposing an image of a medical instrument in at least one of the plurality of image projections based on the transformation matrix and a position of the medical instrument.
摘要翻译： 一种用于医疗器械导航的方法和系统，包括：引入设置在至少三个参考位置的至少三个参考装置; 使用成像和引导系统来获取对应于包括参考装置的期望解剖结构的多个图像投影，所述多个图像投影足以允许生成对应于参考装置的三维建模或重建图像。 该方法还包括测量参考装置的位置; 基于将从建模或重建图像计算的参考装置的位置与参考装置的测量位置的比较位置来制定变换矩阵; 以及基于所述变换矩阵和所述医疗器械的位置，将所述医疗器械的图像叠加在所述多个图像投影中的至少一个中。
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公开(公告)号：US07845851B2
公开(公告)日：2010-12-07
申请号：US12065616
申请日：2006-09-12
申请人： Volker Rasche
发明人： Volker Rasche
IPC分类号： H05G1/02
CPC分类号： A61B6/0457 , A61B6/4441 , A61B6/469 , A61B6/542
摘要： Iso-centering a volume of interest (VOI) (170) within a patient (168) to undergo examination on a rotational X-ray apparatus (100) is achieved by taking two differently-angled pictures (S210) and updating positional settings (172) for the patient's table (112) responsive to respectively displayed centering of the VOI (152). Alternatively, the operator identifies respective VOI centers (S410, S450) for each of the two displayed pictures, and corresponding table movement is automatically calculated (S420).
摘要翻译： 通过采取两个不同角度的图像（S210）和更新位置设置（172）来实现在患者（168）内对感兴趣的体积（VOI）（170）进行对中以进行旋转X射线装置（100）的检查 ），用于响应于分别显示的VOI的中心点（152）的患者的桌子（112）。 或者，操作者为两个显示的图像中的每一个识别各自的VOI中心（S410，S450），并且自动计算相应的表移动（S420）。
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公开(公告)号：US20090080751A1
公开(公告)日：2009-03-26
申请号：US11576702
申请日：2005-10-06
申请人： Volker Rasche , Roland Proksa
发明人： Volker Rasche , Roland Proksa
IPC分类号： G06K9/00
摘要： The invention relates to an imaging system and a method for generating high-quality X-ray projections (24) of a patient (1). The system comprises a rotational X-ray device (10), for example a cone-beam CT-gantry (12), and an associated data processing unit (20). During a medical intervention, low-dose raw projections (22) of the patient (1) are continuously generated from different directions. A volume of interest (23) is then reconstructed from said projections (22), from which high-quality virtual projections (24) can be calculated for a display on a monitor (25). The number and direction of said virtual projections (24) can be arbitrarily chosen by the user.
摘要翻译： 本发明涉及一种用于产生患者（1）的高质量X射线投影（24）的成像系统和方法。 该系统包括旋转X射线装置（10），例如锥形束CT机架（12）和相关联的数据处理单元（20）。 在医疗干预期间，从不同方向连续地生成患者（1）的低剂量原始投影（22）。 然后从所述投影（22）重建感兴趣的体积（23），从而可以为监视器（25）上的显示计算高质量的虚拟投影（24）。 所述虚拟投影（24）的数量和方向可以由用户任意选择。
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18.发明申请System and Method for Enabling Selection of an Image Registration Transformation 有权用于启用图像注册转换选择的系统和方法公开(公告)号：US20080279430A1
公开(公告)日：2008-11-13
申请号：US12096648
申请日：2006-12-05
IPC分类号： G06T7/00
CPC分类号： G06T7/38 , G06T7/35 , G06T2207/30004
摘要： System and method for enabling intra-operative selection of an image registration transformation for use in displaying a first image dataset and a second image dataset in correspondence with one another. Image dataset acquisition devices (12, 14) obtain the first and second image datasets. A similarity function indicative of a likelihood that the first and second image datasets are in correspondence with one another is computed by a processor (16) and then a ranking of each of a plurality of local maxima of the similarity function is determined. Registration transformations derived from a plurality of the local maxima are displayed on a display (18), and using a user-interface (22), a physician can select each registration transformation to ascertain visually whether it is the clinically-optimal registration transformation for subsequent use.
摘要翻译： 用于使得能够在操作中选择图像配准变换以用于相互对应地显示第一图像数据集和第二图像数据集的系统和方法。 图像数据集获取装置（12,14）获得第一和第二图像数据集。 由处理器（16）计算指示第一和第二图像数据集彼此对应的可能性的相似度函数，然后确定相似度函数的多个局部最大值中的每一个的等级。 从多个本地最大值导出的登记变换被显示在显示器（18）上，并且使用用户界面（22），医师可以选择每个注册变换以在视觉上确定是否是用于后续的临床优化注册变换 使用。
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公开(公告)号：US20060267579A1
公开(公告)日：2006-11-30
申请号：US10553771
申请日：2004-04-14
申请人： Joern Borgert , Volker Rasche
发明人： Joern Borgert , Volker Rasche
IPC分类号： G01R33/025
摘要： Position measurements are often performed using a localization system with a given fixed capture range and accuracy and resolution. Having a fixed capture range often comes at the cost of decreased accuracy and resolution. According to the present invention, at the start, a large capture range is provided where the accuracy and resolution is low. In this large capture area, the target area can be identified and aimed at. With this identification, a smaller capture range is iteratively provided and centered around the region of interest, which leads to an increased accuracy and resolution.
摘要翻译： 位置测量通常使用具有给定的固定捕获范围和精度和分辨率的定位系统执行。 具有固定的捕获范围通常来自降低精度和分辨率的代价。 根据本发明，开始时提供了精度和分辨率低的大的捕获范围。 在这个大的捕获区域，目标区域可以被识别和瞄准。 通过这种识别，迭代地提供较小的捕获范围并以感兴趣的区域为中心，这导致增加的精度和分辨率。
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20.发明授权X-ray imaging method and a 3D-rotational X-ray apparatus for applying this method 失效X射线成像方法和应用该方法的3D旋转X射线装置公开(公告)号：US06959067B2
公开(公告)日：2005-10-25
申请号：US10022383
申请日：2001-10-30
IPC分类号： A61B6/00
摘要： An X-ray imaging method comprises forming 2-dimensional X-ray images of an object to be examined, for example the coronary vascular system of a patient, and reconstruction of a 3-dimensional volume thereof. With a relatively long run length of a scan rotation over substantially 180° of at least 15 sec. and preferably about 20 sec. A sufficient number of images is obtained to perform a more accurate volume reconstruction. This reconstruction method may be combined with existing modelling techniques.
摘要翻译： X射线成像方法包括形成待检查对象的2维X射线图像，例如患者的冠状血管系统，以及其3维体积的重建。 具有在大约180°至少15秒的扫描旋转的相对较长的行程长度。 优选约20秒。 获得足够数量的图像以执行更精确的体积重建。 这种重建方法可以与现有的建模技术相结合。
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