公开(公告)号：US08103075B2

公开(公告)日：2012-01-24

申请号：US12070884

申请日：2008-02-21

申请人： Jan Boese ,  Joachim Hornegger ,  Günter Lauritsch ,  Marcus Prümmer

发明人： Jan Boese ,  Joachim Hornegger ,  Günter Lauritsch ,  Marcus Prümmer

IPC分类号： G06K9/00

CPC分类号： G06T19/00 ,  A61B6/4441 ,  A61B6/486 ,  A61B6/503 ,  A61B6/5211 ,  A61B6/5264 ,  A61B6/5288 ,  G06T7/30 ,  G06T2207/10072 ,  G06T2207/10116 ,  G06T2207/10124 ,  G06T2207/30048 ,  G06T2210/41

摘要： The invention relates to the use of 2D projection images which belong to a specific common heart phase. A 3D image data set can be used to generate a reference projection image for the same projection angle for each of the 2D projection images and a differential image can be derived from the reference projection image and 2D projection image. The differential images are back-projected and combined in one 3D differential image data set and, by using this, a deformed 3D image data set is obtained from the previously recorded 3D image data set. Iterations guarantee that the deformed 3D image data set ensues with the smallest possible distance from the 2D projection images for the existing common heart phase. Finally, a 3D image data set is available for a different heart phase other than the reference heart phase and the possibilities for imaging a patient's heart are extended.

摘要翻译： 本发明涉及属于特定共同心脏相位的二维投影图像的应用。 可以使用3D图像数据集来为每个2D投影图像生成用于相同投影角的参考投影图像，并且可以从参考投影图像和2D投影图像导出差分图像。 差分图像被反投影并组合在一个3D差分图像数据集中，并且通过使用它，从先前记录的3D图像数据集获得变形的3D图像数据集。 迭代保证变形的3D图像数据集随着现有共同心脏相位的2D投影图像的最小可能距离而发生。 最后，3D图像数据集可用于除参考心脏相以外的不同心脏相位，并且延长了对患者心脏进行成像的可能性。

公开(公告)号：US08027526B2

公开(公告)日：2011-09-27

申请号：US11980229

申请日：2007-10-30

申请人： Jan Boese ,  Joachim Hornegger ,  Günter Lauritsch ,  Marcus Prümmer

发明人： Jan Boese ,  Joachim Hornegger ,  Günter Lauritsch ,  Marcus Prümmer

IPC分类号： A61B6/03

CPC分类号： G06T7/20 ,  A61B5/7289 ,  A61B6/032 ,  A61B6/466 ,  A61B6/503 ,  A61B6/5288 ,  G06T2207/30048 ,  Y10S378/901

摘要： X-ray images are recorded of a patient's heart and the heartbeat phase is registered as that is done. The heartbeat phases are coarsely divided into intervals and all X-ray images that have been assigned heartbeat phase from the interval are used for reconstructing a 3D image dataset. The movement fields of the other 3D image datasets are then calculated for one of said 3D image datasets. Movement fields are vector fields indicating the movements of similar structures from one local area to the other. A departure is then made from the coarse interval division, and for each heartbeat phase a movement field is interpolated individually or at least for fairly short intervals from the movement fields determined in advance, which field is used for generating a deformed 3D image dataset that has been imaged onto a reference heartbeat phase. The deformed 3D image datasets are then added together.

摘要翻译： 记录患者心脏的X射线图像，并记录心跳阶段。 将心跳阶段粗略划分为间隔，并且已经从间隔分配了心跳期的所有X射线图像用于重建3D图像数据集。 然后针对所述3D图像数据集之一计算其它3D图像数据集的运动场。 运动场是指示类似结构从一个局部区域到另一个局部区域的运动的向量场。 然后从粗间隔划分出发，并且对于每个心跳阶段，移动场单独或至少相对于预先确定的运动场的相当短的间隔进行内插，该场用于生成变形的3D图像数据集，其具有 被成像到参考心跳期。 然后将变形的3D图像数据集加在一起。

公开(公告)号：US08183529B2

公开(公告)日：2012-05-22

申请号：US12378793

申请日：2009-02-19

申请人： Joachim Hornegger ,  Günter Lauritsch ,  Marcus Prümmer ,  Christopher Rohkohl

发明人： Joachim Hornegger ,  Günter Lauritsch ,  Marcus Prümmer ,  Christopher Rohkohl

IPC分类号： G01T1/20 ,  G06K9/00 ,  A61N5/10

CPC分类号： A61B6/032 ,  A61B6/4441 ,  A61B6/466 ,  G06T11/005 ,  G06T2211/412

摘要： The invention relates to a method for three-dimensional presentation of a moved structure using a tomographic method, in which a plurality of projection images are recorded from different imaging angles between a start angle with a start node point and an end angle with an end node point by an imaging unit during a number of rotation passes, with three-dimensional image data being able to be reconstructed from the projection images, with the projection images being spaced by a path or an edge. For determining the three-dimensional presentation for each angle of projection only those projection images are selected which minimize the sum of the paths or weighted edges between adjacent projection angles for a gating.

摘要翻译： 本发明涉及一种使用断层摄影方法对移动结构进行三维呈现的方法，其中从与起点节点的开始角度与终端节点的终止角度之间的不同成像角度记录多个投影图像 在多次旋转通过期间由成像单元指向，其中三维图像数据能够从投影图像重建，其中投影图像被路径或边缘间隔开。 为了确定每个投影角度的三维呈现，仅选择那些最小化用于门控的相邻投影角之间的路径或加权边缘之和的投影图像。

公开(公告)号：US07912271B2

公开(公告)日：2011-03-22

申请号：US11903164

申请日：2007-09-20

申请人： Stefan Hoppe ,  Joachim Hornegger ,  Günter Lauritsch

发明人： Stefan Hoppe ,  Joachim Hornegger ,  Günter Lauritsch

IPC分类号： G06K9/00 ,  A61B6/03

CPC分类号： A61B6/583 ,  A61B6/027 ,  Y10S378/901

摘要： A computer receives a number of groups of projection images of a reference object already known to the computer. Each projection image was captured via a recording arrangement with corresponding positioning of the recording arrangement. The computer uses one projection image for the respective position of the recording arrangement to determine an interim projection matrix, which describes a mapping of the three-dimensional space to a projection image captured with the respective positioning of the recording arrangement. The interim projection matrices relate to coordinate systems that are specifically assigned to each group. The computer uses interim projection matrices of different groups determined for the same position of the recording arrangement to determine locations of the other coordinate systems related to one of the coordinate systems. The computer uses the interim projection matrices and locations of the other coordinate systems to define a final projection matrix, that relates to a uniform coordinate system, for every position of the recording arrangement.

摘要翻译： 计算机接收计算机已知的参考对象的多组投影图像组。 每个投影图像通过记录装置的相应定位被捕获。 计算机使用一个投影图像作为记录装置的相应位置，以确定中间投影矩阵，其描述三维空间与通过记录装置的相应定位捕获的投影图像的映射。 临时投影矩阵涉及具体分配给每个组的坐标系。 计算机使用为记录装置的相同位置确定的不同组的临时投影矩阵，以确定与一个坐标系相关的其它坐标系的位置。 计算机使用其他坐标系的临时投影矩阵和位置来定义关于记录装置的每个位置的均匀坐标系的最终投影矩阵。

公开(公告)号：US07780351B2

公开(公告)日：2010-08-24

申请号：US12008943

申请日：2008-01-15

申请人： Benno Heigl ,  Stefan Hoppe ,  Joachim Hornegger ,  Günter Lauritsch

发明人： Benno Heigl ,  Stefan Hoppe ,  Joachim Hornegger ,  Günter Lauritsch

IPC分类号： G01D18/00

CPC分类号： A61B6/4028 ,  A61B6/032 ,  A61B6/583

摘要： The invention relates to a method for determining gray-scale values for volume elements of bodies to be mapped using an x-ray image recording system. When a body to be mapped is not mapped in full on a single projection image for a rotational position, a second projection image must be made and a virtual projection image derived from the two projection images, this being back-projected onto the volume elements. For calibration the present invention proposes making the same two projection images in each case at a calibration phantom and additionally a further projection image, corresponding to the position and orientation of the virtual projection image. As a result the mathematical relationships between the projection images and the virtual projection image and for the back-projection can be derived.

摘要翻译： 本发明涉及一种用于使用X射线图像记录系统确定要映射的身体的体积元素的灰度值的方法。 当要映射的物体没有完全映射到用于旋转位置的单个投影图像上时，必须制作第二投影图像，并且从两个投影图像得到的虚拟投影图像被反投影到体积元件上。 为了进行校准，本发明提出了在校准模型中的每种情况下制作相同的两个投影图像，另外还提供了与虚拟投影图像的位置和取向相对应的另外的投影图像。 因此，可以推导出投影图像与虚拟投影图像之间的数学关系以及背投影的数学关系。

公开(公告)号：US08107708B2

公开(公告)日：2012-01-31

申请号：US12217650

申请日：2008-07-08

申请人： Stefan Hoppe ,  Joachim Hornegger ,  Günter Lauritsch

发明人： Stefan Hoppe ,  Joachim Hornegger ,  Günter Lauritsch

IPC分类号： G06K9/00

CPC分类号： A61B6/032 ,  A61B6/027 ,  A61B6/466 ,  A61B6/5258 ,  G06T11/006 ,  G06T2211/421 ,  G06T2211/432

摘要： The invention relates to a method for correcting truncation artifacts in a reconstruction method for computed tomography recordings. The projection images are recorded by an x-ray image detector being extended by determining the attenuation of the radiation outside the projection image for pixels. Non-horizontal filter lines are extended by transaxial and axial artificial extension of the x-ray image detector for the purposes of truncation correction. The truncation correction for non-horizontal filter lines being carried out according to a method from at least one of the following groups: truncation correction takes place regardless of the specific location and orientation of the filter lines; truncation correction takes place as a function of the specific position and orientation of the filter lines, with the filter lines themselves being retained; and truncation correction takes place by introducing new modified filter lines, with filtering taking place along offset artificially extended filter lines.

摘要翻译： 本发明涉及一种用于计算机断层摄影记录的重建方法中的截断伪影的校正方法。 由X射线图像检测器记录投影图像，通过确定像素的投影图像之外的辐射的衰减而被扩展。 非水平滤波器线通过X射线图像检测器的横轴和轴向人造延伸来延伸，用于截断校正。 对于非水平滤波器线的截断校正根据以下组中的至少一个的方法执行：截断校正发生，而不管滤波器线的具体位置和取向如何; 截断校正作为滤波器线的具体位置和取向的函数发生，滤波器线本身被保持; 并且通过引入新的修改的滤波器线进行截断校正，并且沿着偏移人为扩展的滤波器线进行滤波。

公开(公告)号：US08634620B2

公开(公告)日：2014-01-21

申请号：US13456480

申请日：2012-04-26

申请人： Jan Boese ,  Günter Lauritsch ,  Christopher Rohkohl ,  Bernhard Scholz

发明人： Jan Boese ,  Günter Lauritsch ,  Christopher Rohkohl ,  Bernhard Scholz

IPC分类号： G06K9/00

CPC分类号： A61B6/503 ,  A61B5/7207 ,  A61B6/5223 ,  A61B6/5258 ,  A61B6/5264 ,  G06T11/005 ,  G06T11/006 ,  G06T2211/412

摘要： A method is provided for supplying a 3D X-ray image data record for a moving object. The said object contains highly X-ray radiation-absorbent material. A correction is made in respect of the highly absorbent material in 2D forward projections obtained from a 3D-X-ray image data record. The forward projections are calculated using 3D motion fields, which are derived from original 2D X-ray image data records.

摘要翻译： 提供了一种用于为运动物体提供3D X射线图像数据记录的方法。 所述物体包含高X射线吸收材料。 对从3D-X射线图像数据记录获得的2D向前投影中的高吸收性材料进行校正。 使用从原始2D X射线图像数据记录导出的3D运动场来计算向前投影。

公开(公告)号：US20130004040A1

公开(公告)日：2013-01-03

申请号：US13533234

申请日：2012-06-26

申请人： Mingqing Chen ,  Yefeng Zheng ,  Kerstin Mueller ,  Christopher Rohkohl ,  Günter Lauritsch ,  Jan Boese ,  Gareth Funka-Lea ,  Dorin Comaniciu

发明人： Mingqing Chen ,  Yefeng Zheng ,  Kerstin Mueller ,  Christopher Rohkohl ,  Günter Lauritsch ,  Jan Boese ,  Gareth Funka-Lea ,  Dorin Comaniciu

IPC分类号： G06K9/68

CPC分类号： G06T7/251 ,  G06T11/005 ,  G06T2207/10081 ,  G06T2207/30048 ,  G06T2211/412

摘要： The left ventricle epicardium is estimated in medical diagnostic imaging. C-arm x-ray data is used to detect an endocardium at different phases. The detected endocardium at the different phases is compared to sample endocardiums at different phases. The sample endocardiums have corresponding sample epicadriums. The transformation between the most similar sample endocardium or endocardiums over time and the detected endocardium over time is applied to the corresponding sample epicardium or epicardiums. The transformed sample epicardium over time is the estimated epicardium over time for the C-arm x-ray data.

摘要翻译： 估计左心室心外膜在医学诊断成像中。 C臂X射线数据用于检测不同阶段的心内膜。 将检测到的不同阶段的心内膜与不同阶段的样品心内膜进行比较。 样品心内膜具有相应的样品epicadrium。 随着时间的推移，最相似的样品心内膜或心内膜与随时间的检测到的心内膜之间的转化被应用于相应的样品心外膜或心外膜。 随着时间的推移，转化的样品心外膜随着时间的推移，C-arm x射线数据的估计心外膜。

公开(公告)号：US08428319B2

公开(公告)日：2013-04-23

申请号：US12764225

申请日：2010-04-21

申请人： Yanghai Tsin ,  Klaus J. Kirchberg ,  Günter Lauritsch ,  Chenyang Xu ,  Jan Boese ,  Rui Liao

发明人： Yanghai Tsin ,  Klaus J. Kirchberg ,  Günter Lauritsch ,  Chenyang Xu ,  Jan Boese ,  Rui Liao

IPC分类号： G06K9/00

CPC分类号： G06T7/251 ,  G06T7/60 ,  G06T7/62 ,  G06T2207/10116 ,  G06T2207/30101 ,  G06T2207/30172

摘要： Automatic measurement of morphometric and motion parameters of a coronary target includes extracting reference frames from input data of a coronary target at different phases of a cardiac cycle, extracting a three-dimensional centerline model for each phase of the cardiac cycle based on the references frames and projection matrices of the coronary target, tracking a motion of the coronary target through the phases based on the three-dimensional centerline models, and determining a measurement of morphologic and motion parameters of the coronary target based on the motion.

摘要翻译： 自动测量冠状动脉靶标的形态测量和运动参数包括：在心脏周期的不同阶段从冠状动脉靶的输入数据提取参考帧，基于参考帧提取心动周期的每个相位的三维中心线模型，以及 冠状动脉靶的投影矩阵，基于三维中心线模型跟踪通过相位的冠状动脉靶的运动，以及基于运动确定冠状动脉靶标的形态和运动参数的测量。

公开(公告)号：US07599466B2

公开(公告)日：2009-10-06

申请号：US11400833

申请日：2006-04-07

申请人： Jan Boese ,  Günter Lauritsch

发明人： Jan Boese ,  Günter Lauritsch

IPC分类号： A61B6/00

CPC分类号： A61B6/4441 ,  A61B6/503 ,  A61B6/504 ,  A61B6/541

摘要： A control device pivots an X-ray arrangement repeatedly between two final angular positions about a pivot axis. Projections of an object arranged in the region of the pivot axis and moving iteratively are detected at a plurality of angular positions and supplied to the control device. The control device also receives a phase position referring to the object and assigns the phase position to each projection. A computer selects one or more projections whose phase position corresponds at least approximately to a reconstruction phase position. If the computer has selected one projection for an angular position, it determines this projection as a reconstruction projection. If the computer has selected a plurality of projections for an angular position, it detects the reconstruction projection using these projections. The computer then detects a three-dimensional reconstruction of the object based on the reconstruction projection.

摘要翻译： 控制装置在关于枢转轴线的两个最终角位置之间重复地枢转X射线装置。 在多个角位置处检测布置在枢轴轴线的区域并且迭代地移动的物体的投影并提供给控制装置。 控制装置还接收参考对象的相位位置，并将相位位置分配给每个投影。 计算机选择其相位位置至少近似于重建相位位置的一个或多个投影。 如果计算机已经为角位置选择了一个投影，则它将该投影确定为重建投影。 如果计算机已经为角位置选择了多个投影，则使用这些投影来检测重建投影。 然后，计算机基于重建投影检测对象的三维重建。