公开(公告)号：US20110075794A1

公开(公告)日：2011-03-31

申请号：US12890779

申请日：2010-09-27

申请人： Jan Boese ,  Frank Dennerlein ,  Benno Heigl ,  Holger Kunze ,  Michael Maschke

发明人： Jan Boese ,  Frank Dennerlein ,  Benno Heigl ,  Holger Kunze ,  Michael Maschke

IPC分类号： A61B6/03

CPC分类号： A61B6/032 ,  A61B6/025 ,  A61B6/027 ,  A61B6/481 ,  A61B6/504

摘要： A method is provided for quickly and simply generating a three-dimensional tomographic x-ray imaging. Tomosynthetic projection images are recorded from different recording angles along a tomosynthetic scanning path and three-dimensional image data is reconstructed from the tomosynthetic projection images. The tomosynthetic projection images are recorded by a tomosynthetic x-ray device with a plurality of x-ray sources arranged on a holder at a distance from one another. Each projection image is recorded by a different x-ray source being fixed in one place during recording the tomosynthetic projection images.

摘要翻译： 提供了一种用于快速简单地生成三维断层X射线成像的方法。 从断层合成扫描路径记录不同记录角度的神经合成投影图像，并从断层合成投影图像重建三维图像数据。 断层合成投影图像由具有多个X射线源的断层合成X射线装置记录，所述x射线源彼此间隔一定距离地布置在保持器上。 在记录断层合成投影图像期间，通过将不同的X射线源固定在一个位置来记录每个投影图像。

公开(公告)号：US07359477B2

公开(公告)日：2008-04-15

申请号：US11057978

申请日：2005-02-15

申请人： Günter Lauritsch ,  Frank Dennerlein

发明人： Günter Lauritsch ,  Frank Dennerlein

IPC分类号： A61B6/03

CPC分类号： G06T11/006 ,  A61B6/027 ,  A61B6/4441 ,  A61B6/584 ,  G06T2211/416 ,  G06T2211/421 ,  Y10S378/901

摘要： In a method for reconstructing a CT image from data acquired from an examination subject, a reconstruction algorithm is employed that is based on an ideal short-scan circle-and-line trajectory. To adapt the reconstruction algorithm to a “real world” scan trajectory, data are acquired with a C-arm CT apparatus wherein the focus is moved through an actual short-scan circle-and-line trajectory. For each position of the focus in the actual trajectory, a projection matrix is electronically generated and the reconstruction algorithm with the ideal trajectory is adapted to the actual trajectory using the projection matrices.

摘要翻译： 在从检查对象获取的数据中重建CT图像的方法中，采用基于理想的短扫描圆线轨迹的重建算法。 为了使重构算法适应“现实世界”的扫描轨迹，用C臂CT装置获取数据，其中焦点移动通过实际的短扫圈线轨迹。 对于实际轨迹中的焦点的每个位置，电子地生成投影矩阵，并且使用投影矩阵将具有理想轨迹的重建算法适配于实际轨迹。

公开(公告)号：US11413003B2

公开(公告)日：2022-08-16

申请号：US15121721

申请日：2015-01-13

申请人： Anne-Katrin Becker ,  Georg Buchheim ,  Frank Dennerlein ,  Franziska Dinse ,  Philip Hafner ,  Sultan Haider ,  Clemens Jörger

发明人： Anne-Katrin Becker ,  Georg Buchheim ,  Frank Dennerlein ,  Franziska Dinse ,  Philip Hafner ,  Sultan Haider ,  Clemens Jörger

IPC分类号： A61B6/00 ,  A61B6/08

摘要： Setting an x-ray emission unit includes acquiring image data with the aid of a number of image recording units. A body region to be recorded of an examination object is identified based on the image data. Position data of the body region to be recorded is established, and the x-ray emission unit is set using the position data.

公开(公告)号：US20160374639A1

公开(公告)日：2016-12-29

申请号：US15121721

申请日：2015-01-13

申请人： Anne-Katrin Becker ,  Georg Buchheim ,  Frank Dennerlein ,  Franziska Dinse ,  Philip Hafner ,  Sultan Haider ,  Clemens Jörger

发明人： Anne-Katrin Becker ,  Georg Buchheim ,  Frank Dennerlein ,  Franziska Dinse ,  Philip Hafner ,  Sultan Haider ,  Clemens Jörger

IPC分类号： A61B6/00 ,  A61B6/08

摘要： Setting an x-ray emission unit includes acquiring image data with the aid of a number of image recording units. A body region to be recorded of an examination object is identified based on the image data. Position data of the body region to be recorded is established, and the x-ray emission unit is set using the position data.

摘要翻译： 设置x射线发射单元包括借助于多个图像记录单元获取图像数据。 基于图像数据来识别要记录的检查对象的身体区域。 建立要记录的身体区域的位置数据，并且使用位置数据设置x射线发射单元。

公开(公告)号：US09271691B2

公开(公告)日：2016-03-01

申请号：US13970760

申请日：2013-08-20

申请人： Frank Dennerlein ,  Mathias Hoernig

发明人： Frank Dennerlein ,  Mathias Hoernig

IPC分类号： A61B6/00 ,  A61B6/03 ,  G06T11/00

CPC分类号： A61B6/52 ,  A61B6/032 ,  A61B6/4441 ,  A61B6/488 ,  A61B6/5205 ,  G06T11/005

摘要： In a method and x-ray device to determine a three-dimensional target image data set showing at least one partial region of interest of an acquisition region, wherein the image data of the three-dimensional target image data set are reconstructed from two-dimensional projection images acquired from various projection directions, first projection images are acquired without a collimation of the radiation source from first projection directions and a three-dimensional overview image data set of the acquisition region is reconstructed from the first projection images. The partial region of interest is selected in the overview image data set. Second projection images are acquired, with collimation at the partial region, from second projection directions, the second projection directions differing from the first projection directions. The target image data set showing the acquisition region and the partial region of interest is reconstructed from all first and second projection images.

摘要翻译： 一种用于确定显示采集区域的至少一个部分感兴趣区域的三维目标图像数据集的方法和x射线装置，其中三维目标图像数据集的图像数据从二维 从各个投影方向获取的投影图像获取第一投影图像而不从第一投影方向准直辐射源，并且从第一投影图像重建获取区域的三维概览图像数据集。 在概览图像数据集中选择感兴趣的部分区域。 从第二投影方向获取第二投影图像，其中部分区域具有准直，第二投影方向与第一投影方向不同。 从所有第一和第二投影图像重建表示获取区域和感兴趣的部分区域的目标图像数据集。

公开(公告)号：US08824765B2

公开(公告)日：2014-09-02

申请号：US13478342

申请日：2012-05-23

申请人： Frank Dennerlein

发明人： Frank Dennerlein

IPC分类号： G06K9/00 ,  G06T11/00 ,  A61B6/00 ,  A61B6/03 ,  A61B6/02

CPC分类号： G06T11/006 ,  A61B6/027 ,  A61B6/032 ,  A61B6/5205 ,  A61B6/5258 ,  G06T2211/416 ,  G06T2211/421 ,  G06T2211/432

摘要： A method for acquiring a 3D image dataset is proposed. A 3D X-ray image dataset of an image object is acquired during scanning of a partial circle by X-ray radiation source and X-ray radiation detector. A first and a second 3D image datasets are calculated from the acquired image dataset. Redundancies are eliminated by averaging the first and second 3D image datasets. A filtering that is antisymmetric in respect of a center of symmetry is performed in respect of the 2D image datasets in calculating the second 3D image dataset. Said filtering has a row-by-row Hilbert transform. Suitable weights can be specified based on an axis defined in space.

摘要翻译： 提出了一种获取3D图像数据集的方法。 通过X射线辐射源和X射线辐射检测器在部分圆扫描期间获取图像对象的3D X射线图像数据集。 从所获取的图像数据集计算第一和第二3D图像数据集。 通过平均第一和第二3D图像数据集来消除冗余。 在计算第二3D图像数据集时，关于2D图像数据集执行相对于对称中心反对称的滤波。 所述滤波具有逐行Hilbert变换。 可以基于在空间中定义的轴来指定适当的重量。

公开(公告)号：US20140050295A1

公开(公告)日：2014-02-20

申请号：US13970760

申请日：2013-08-20

申请人： Frank Dennerlein ,  Mathias Hoernig

发明人： Frank Dennerlein ,  Mathias Hoernig

IPC分类号： A61B6/00 ,  A61B6/03

CPC分类号： A61B6/52 ,  A61B6/032 ,  A61B6/4441 ,  A61B6/488 ,  A61B6/5205 ,  G06T11/005

摘要： In a method and x-ray device to determine a three-dimensional target image data set showing at least one partial region of interest of an acquisition region, wherein the image data of the three-dimensional target image data set are reconstructed from two-dimensional projection images acquired from various projection directions, first projection images are acquired without a collimation of the radiation source from first projection directions and a three-dimensional overview image data set of the acquisition region is reconstructed from the first projection images. The partial region of interest is selected in the overview image data set. Second projection images are acquired, with collimation at the partial region, from second projection directions, the second projection directions differing from the first projection directions. The target image data set showing the acquisition region and the partial region of interest is reconstructed from all first and second projection images.

摘要翻译： 一种用于确定显示采集区域的至少一个部分感兴趣区域的三维目标图像数据集的方法和x射线装置，其中三维目标图像数据集的图像数据从二维 从各个投影方向获取的投影图像获取第一投影图像而不从第一投影方向准直辐射源，并且从第一投影图像重建获取区域的三维概览图像数据集。 在概览图像数据集中选择感兴趣的部分区域。 从第二投影方向获取第二投影图像，其中部分区域具有准直，第二投影方向与第一投影方向不同。 从所有第一和第二投影图像重建表示获取区域和感兴趣的部分区域的目标图像数据集。

公开(公告)号：US08559591B2

公开(公告)日：2013-10-15

申请号：US12891873

申请日：2010-09-28

申请人： Jan Boese ,  Frank Dennerlein

发明人： Jan Boese ,  Frank Dennerlein

IPC分类号： G01N23/00

CPC分类号： A61B6/466 ,  A61B6/032 ,  A61B6/4007 ,  A61B6/4014 ,  A61B6/503 ,  A61B6/541 ,  H01J2235/062

摘要： A method for recording a projection dataset of a object to be recorded using a plurality of X-ray sources is provided, which X-ray sources are spaced apart from one another on average by an angle α relative to an isocenter. A plurality of projection images from different recording directions are recorded in succession while activating the corresponding X-ray sources. Two X-ray sources are activated in succession having a spacing of at least 2 α relative to the isocenter.

摘要翻译： 提供了使用多个X射线源记录要记录的对象的投影数据集的方法，其中X射线源相对于等角点平均间隔一个角度α。 在激活对应的X射线源的同时，连续地记录来自不同记录方向的多个投影图像。 两个X射线源相继地相对于等角点具有至少2个α的间距而被激活。

公开(公告)号：US08428216B2

公开(公告)日：2013-04-23

申请号：US13176957

申请日：2011-07-06

申请人： Frank Dennerlein ,  Bernhard Scholz

发明人： Frank Dennerlein ,  Bernhard Scholz

IPC分类号： A61B6/00

CPC分类号： G06T11/006 ,  A61B6/52 ,  G06T2211/432

摘要： A method for reconstruction of a three-dimensional image data set from projection images of an object captured with an X-ray device from different projection angles is proposed. At least one sub-area of the object is outside the coverage of the X-ray device, or as a result of strong attenuation by a metal so that no projection data is present in the sub-area. Filter lines are determined n the projection images. A first local transformation is performed along the filter lines on the projection images. The missing projection data on the transformed projection data is augmented. A non-local transformation is performed on the transformed projection data for determining of filtered, augmented projection data. The non-local transformation is different from a ramp filter which is created by the first local transformation and the non-local transformation. The three-dimensional image data set is determined by back-projection of the filtered, augmented projection data.

摘要翻译： 提出了一种从不同投影角度用X射线装置拍摄的物体的投影图像重建三维图像数据集的方法。 物体的至少一个子区域在X射线设备的覆盖范围之外，或者由于金属的强衰减的结果，使得在子区域中不存在投影数据。 在投影图像中确定滤光片线。 沿着投影图像上的滤波器线执行第一局部变换。 改变的投影数据上丢失的投影数据被增加。 对经变换的投影数据进行非局部变换，以确定经滤波的增强投影数据。 非局部变换与由第一局部变换和非局部变换创建的斜坡滤波器不同。 三维图像数据集由滤波后的增强投影数据的反投影确定。

公开(公告)号：US20130003916A1

公开(公告)日：2013-01-03

申请号：US13540588

申请日：2012-07-02

申请人： Frank Dennerlein

发明人： Frank Dennerlein

IPC分类号： G06K9/36 ,  A61B6/03

CPC分类号： A61B6/03 ,  A61B6/4085 ,  A61B6/4233 ,  A61B6/4441 ,  A61B6/4458 ,  A61B6/504 ,  G06K9/36 ,  G06T11/003 ,  G06T11/006 ,  G06T2211/421

摘要： An alternative analytical method for tomographic reconstruction in the 2D parallel-beam geometry is presented. This method may follow a filtering and backprojection scheme and may involve a global filtering in the projection domain and a local filtering in the image domain. For example, the method may include applying Hilbert filtering to the received projection data, computing an antiderivative of the filtered data, backprojecting the antiderivative into the image domain, and computing the 2D Laplacian of the backprojection image.

摘要翻译： 提出了2D平行光束几何中断层成像重建的另一种分析方法。 该方法可以遵循滤波和反投影方案，并且可以涉及投影域中的全局滤波和图像域中的局部滤波。 例如，该方法可以包括将Hilbert滤波应用于所接收的投影数据，计算滤波数据的反向推导，反向投影到图像域中，以及计算反投影图像的2D拉普拉斯算子。