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

CPC分类号： A61B5/061 ,  A61B5/06 ,  A61B6/12 ,  A61B6/469

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。

公开(公告)号：US08380007B2

公开(公告)日：2013-02-19

申请号：US12096648

申请日：2006-12-05

申请人： Raymond C. Chan ,  Robert Manzke ,  Shunmugavelu Sokka ,  Volker Rasche ,  Vivek Reddy

发明人： Raymond C. Chan ,  Robert Manzke ,  Shunmugavelu Sokka ,  Volker Rasche ,  Vivek Reddy

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。

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。

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）。

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

CPC分类号： A61B6/466 ,  A61B6/032 ,  A61B6/4233 ,  A61B6/467 ,  A61B6/469 ,  A61B6/542

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。

公开(公告)号：US20080279430A1

公开(公告)日：2008-11-13

申请号：US12096648

申请日：2006-12-05

申请人： Raymond C. Chan ,  Robert Manzke ,  Shunmugavelu Sokka ,  Volker Rasche ,  Vivek Reddy

发明人： Raymond C. Chan ,  Robert Manzke ,  Shunmugavelu Sokka ,  Volker Rasche ,  Vivek Reddy

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。

公开(公告)号：US06959067B2

公开(公告)日：2005-10-25

申请号：US10022383

申请日：2001-10-30

申请人： Volker Rasche ,  Steffen Weiss ,  Johannes Catharina Antonius Op De Beek

发明人： Volker Rasche ,  Steffen Weiss ,  Johannes Catharina Antonius Op De Beek

IPC分类号： A61B6/00

CPC分类号： A61B6/541 ,  A61B6/481 ,  A61B6/504

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。

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：US5823959A

公开(公告)日：1998-10-20

申请号：US795489

申请日：1997-02-05

申请人： Volker Rasche

发明人： Volker Rasche

IPC分类号： G01R33/387 ,  A61B5/055 ,  G01R33/54

CPC分类号： G01R33/54

摘要： The invention relates to an MR method for determining the frequency map in an examination zone as well as to an appropriate sequence in which the nuclear magnetization is read in conjunction with the read gradient of varying direction. Subsequent to an excitation of the nuclear magnetization, a plurality of MR echo signals are acquired. From the sub-images acquired with different echo times on the one hand the frequency map can be derived whereas on the other hand these sub-images can be combined so as to form an MR overall image of higher spatial resolution. The invention also relates to a device for carrying out this method.

摘要翻译： 本发明涉及一种用于确定检查区域中频率图的MR方法以及结合变化方向的读取梯度来读取核磁化的适当序列。 在核磁化的激发之后，获取多个MR回波信号。 一方面，从不同的回波时间获取的子图像可以得到频率图，而另一方面可以组合这些子图像，以形成更高空间分辨率的MR整体图像。 本发明还涉及一种用于执行该方法的装置。

公开(公告)号：US5498961A

公开(公告)日：1996-03-12

申请号：US207529

申请日：1994-03-07

申请人： Michael H. Kuhn ,  Volker Rasche ,  Roland Proksa

发明人： Michael H. Kuhn ,  Volker Rasche ,  Roland Proksa

IPC分类号： A61B5/055 ,  G01R33/54 ,  G01R33/567 ,  G01V3/14

CPC分类号： G01R33/56383

摘要： The invention relates to an MR method for two-dimensional or three-dimensional imaging of an examination zone, in which a set of raw data is measured repeatedly, an image of the examination zone can be reconstructed from each set, and the raw data of a set is acquired with different measurement parameters, and different sets contain raw data acquired with the same measurement parameters. Improved temporal resolution is achieved in that a set of auxiliary data is formed from at least two sets of raw data in order to produce an image representing the examination zone at a selectable instant, the auxiliary data being derived by interpolation from the raw data acquired with each time the same measurement parameters but at different measurement instants, the weight applied to the raw data entering the interpolation being greater as the time interval between the associated measurement instant and the selectable instant is smaller, the image of the examination zone being reconstructed from the set of auxiliary data.

摘要翻译： 本发明涉及一种用于检查区域的二维或三维成像的MR方法，其中重复测量一组原始数据，可以从每个组重建检查区域的图像，并且原始数据 采集不同测量参数的集合，不同的集合包含采用相同测量参数获得的原始数据。 通过从至少两组原始数据形成一组辅助数据，以在可选择的时刻产生表示检查区域的图像，辅助数据通过从用 每次相同的测量参数，但是在不同的测量时刻，施加到进入插值的原始数据的权重随着相关联的测量时刻和可选择时刻之间的时间间隔而变大，则检查区域的图像从 一组辅助数据。