公开(公告)号：US20080137936A1

公开(公告)日：2008-06-12

申请号：US11980229

申请日：2007-10-30

申请人： Jan Boese ,  Joachim Hornegger ,  Gunter Lauritsch ,  Marcus Prummer

发明人： Jan Boese ,  Joachim Hornegger ,  Gunter Lauritsch ,  Marcus Prummer

IPC分类号： A61B6/00

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。 将心跳阶段粗略地划分为间隔，并且已经从间隔分配了心跳相位的所有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：US20080205726A1

公开(公告)日：2008-08-28

申请号：US12070884

申请日：2008-02-21

申请人： Jan Boese ,  Joachim Hornegger ,  Gunter Lauritsch ,  Marcus Prummer

发明人： Jan Boese ,  Joachim Hornegger ,  Gunter Lauritsch ,  Marcus Prummer

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：US20090214098A1

公开(公告)日：2009-08-27

申请号：US12378793

申请日：2009-02-19

申请人： Joachim Hornegger ,  Gunter Lauritsch ,  Marcus Prummer ,  Christopher Rohkohl

发明人： Joachim Hornegger ,  Gunter Lauritsch ,  Marcus Prummer ,  Christopher Rohkohl

IPC分类号： G06K9/00

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，仅选择这些投影图像，其最小化门控的相邻投影角之间的路径或加权边缘之和。

公开(公告)号：US20050010100A1

公开(公告)日：2005-01-13

申请号：US10836946

申请日：2004-04-30

申请人： Joachim Hornegger ,  Marcus Prummer

发明人： Joachim Hornegger ,  Marcus Prummer

IPC分类号： A61B6/03 ,  G06T5/00 ,  G06T7/00 ,  A61B5/05 ,  G06F17/00 ,  G06K9/00

CPC分类号： G06T7/0012 ,  G06T2207/10072 ,  G06T2207/20044 ,  G06T2207/30101

摘要： In a method and apparatus for fully automatic detection of anomalies in vessel structures, a 3D volume data set of an imaging 3D measurement of the vessel structure is obtained and, for an evaluation device, the vessel structure is detected in the 3D volume data set and subsequently is skeletonized in order to obtain a three-dimensional course of skeletonization paths. Characteristic quantities of the vessel structure are automatically determined along the skeletonization paths as features that are significant for an anomaly to be detected, in order obtain one or more feature series. The determined feature series are classified by non-linear imaging and comparison with reference feature series that have been determined for different classes of known vessel structures that contain different anomalies and known vessel structures without anomalies. Anomalies corresponding to the classification thus are identified.

摘要翻译： 在用于全自动检测血管结构异常的方法和装置中，获得血管结构的成像3D测量的3D体积数据集，并且对于评估装置，在3D体积数据集中检测血管结构， 随后被骷髅化以获得三维路线的骨架化路径。 沿着骨架化路径自动确定容器结构的特征量，作为要检测的异常的特征，以获得一个或多个特征序列。 确定的特征系列通过非线性成像和与参考特征序列进行比较，该参考特征系列已​​经针对包含不同异常的已知血管结构和已知血管结构的不同类别确定，而没有异常。 识别与分类对应的异常。

公开(公告)号：US20090016592A1

公开(公告)日：2009-01-15

申请号：US12217650

申请日：2008-07-08

申请人： Stefan Hoppe ,  Joachim Hornegger ,  Gunter Lauritsch

发明人： Stefan Hoppe ,  Joachim Hornegger ,  Gunter Lauritsch

IPC分类号： G06K9/00 ,  A61B6/00

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：US20080080758A1

公开(公告)日：2008-04-03

申请号：US11903164

申请日：2007-09-20

申请人： Stefan Hoppe ,  Joachim Hornegger ,  Gunter Lauritsch

发明人： Stefan Hoppe ,  Joachim Hornegger ,  Gunter Lauritsch

IPC分类号： G06K9/00

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：US20080181367A1

公开(公告)日：2008-07-31

申请号：US12008943

申请日：2008-01-15

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

发明人： Benno Heigl ,  Stefan Hoppe ,  Joachim Hornegger ,  Gunter 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：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：US09269144B2

公开(公告)日：2016-02-23

申请号：US13097785

申请日：2011-04-29

申请人： Martin F. G. Kraus ,  Benjamin M. Potsaid ,  James G. Fujimoto ,  Markus Anton Mayer ,  Ruediger Bock ,  Joachim Hornegger

发明人： Martin F. G. Kraus ,  Benjamin M. Potsaid ,  James G. Fujimoto ,  Markus Anton Mayer ,  Ruediger Bock ,  Joachim Hornegger

IPC分类号： G06T7/00 ,  A61B3/10

CPC分类号： G06T11/006 ,  A61B3/0025 ,  A61B3/102 ,  G06T7/248 ,  G06T7/30 ,  G06T2207/10101 ,  G06T2207/30041

摘要： Images of an object, such as OCT scans of a human eye, can include distortions and data gaps due to relative motion of the object and the image acquisition device. Methods and systems for correction of such distortions and data gaps are described herein. Motion-corrected data is arrived at by applying three-dimensional transforms to input three-dimensional data sets that represent at least partially overlapping regions of the imaged object. The three dimensional transforms are computed based on an objective function that accounts for similarity between the transformed three-dimensional data sets and the estimated motion of the object relative to an imaging instrument. Methods and systems described herein advantageously eliminate the need for postulated assumptions and reliance on landmarks and are capable of filling data gaps, thereby producing high quality, undistorted images of objects subject to movement during imaging. Multiple motion-corrected data sets can be merged or combined to produce a data set with improved image quality.

摘要翻译： 诸如人眼的OCT扫描的物体的图像可能包括由于物体和图像采集装置的相对运动引起的失真和数据间隙。 本文描述了用于校正这种失真和数据间隙的方法和系统。 通过应用三维变换来输入表示成像对象的至少部分重叠区域的三维数据集来获得运动校正数据。 基于目标函数来计算三维变换，该目标函数考虑了变换的三维数据集之间的相似性以及物体相对于成像仪器的估计的运动。 本文描述的方法和系统有利地消除了对假定假设和对地标的依赖的需要，并且能够填补数据间隙，从而产生在成像期间经受运动的物体的高质量，未失真的图像。 可以将多个运动校正数据集合或组合以产生具有改进的图像质量的数据集。