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1. 发明申请

US20090214098A1 Method for three-dimensional presentation of a moved structure using a tomographic method 有权
标题翻译：使用断层摄影法对移动结构进行三维显示的方法
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。

2. 发明申请

US20080137936A1 Method for providing a 3D X-ray image dataset of a patient's heart 有权
标题翻译：用于提供患者心脏的3D X射线图像数据集的方法
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。

3. 发明申请

US20080205726A1 Method for providing extended possibilities when imaging a patient's heart 有权
标题翻译：在对患者心脏进行成像时提供扩展可能性的方法
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。

4. 发明申请

US20090016592A1 Method for correcting truncation artifacts 有权
标题翻译：截断伪影的校正方法
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。

5. 发明申请

US20080181367A1 Method for determining gray-scale values for volume elements of bodies to be mapped 有权
标题翻译：用于确定要映射的物体的体积元素的灰度值的方法
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。

6. 发明申请

US20080080758A1 Method for determining final projection matrices 有权
标题翻译：确定最终投影矩阵的方法
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。

7. 发明申请

US20090202034A1 Method for three-dimensional image reconstruction of a dynamically moved object from data of an imaging device as well as associated imaging device 审中-公开
标题翻译：用于从成像设备的数据以及相关联的成像设备的动态移动的对象的三维图像重建的方法
公开(公告)号：US20090202034A1
公开(公告)日：2009-08-13
申请号：US12321909
申请日：2009-01-27
申请人： Gunter Lauritsch , Alois Nottling , Christopher Rohkohl
发明人： Gunter Lauritsch , Alois Nottling , Christopher Rohkohl
IPC分类号： H05G1/60 , A61B5/05
CPC分类号： G06T11/006 , G06T2211/412
摘要： The invention relates to a method for three-dimensional image reconstruction of a dynamically moved object from projection data of an imaging device comprising: a) determining a reference volume from the projection data which simulates a similar static object instead of the dynamically moved object; b) assigning the projection data to at least two disjoint consistent subsets, with a volume part reconstruction of the dynamically moved object being undertaken for each subset from projection data assigned to the subsets; c) applying a transformation to the respective volume part reconstructions representing a dynamic movement of the object; d) comparing the volumes of the transformed part reconstructions with a corresponding part of the reference volume, whereby, depending on the comparison, result step c) may be at least partly repeated; and e) summing the volume part reconstructions resulting from step c) and d) to form an overall three-dimensional image reconstruction.
摘要翻译：本发明涉及一种用于成像设备的投影数据的动态移动对象的三维图像重构的方法，包括：a）从模拟类似静态对象而不是动态移动对象的投影数据确定参考体积; b）将投影数据分配给至少两个不相交的一致性子集，其中通过分配给子集的投影数据对每个子集进行动态移动的对象的体积部分重建; c）对表示所述对象的动态移动的相应体积部分重建应用变换; d）将经转换的部分重建的体积与参考体积的相应部分进行比较，由此，根据比较，结果步骤c）可以至少部分地重复; 以及e）将由步骤c）和d）得到的体积部分重建相加以形成整体三维图像重建。

8. 发明申请

US20120280978A1 METHOD FOR GENERATING A FOUR-DIMENSIONAL REPRESENTATION OF A TARGET REGION OF A BODY, WHICH TARGET REGION IS SUBJECT TO PERIODIC MOTION 有权
标题翻译：用于产生目标区域的四维区域的四维表示的方法，其目标区域受定期运动的影响
公开(公告)号：US20120280978A1
公开(公告)日：2012-11-08
申请号：US13314445
申请日：2011-12-08
申请人： Wolfgang Holub , Gunter Lauritsch , Christopher Rohkohl
发明人： Wolfgang Holub , Gunter Lauritsch , Christopher Rohkohl
IPC分类号： G06T15/00 , G06T13/00
CPC分类号： G06T13/20 , A61B5/0044 , A61B5/0402 , A61B5/1107 , A61B5/1128 , A61B5/7289 , G06T11/005 , G06T2210/41 , G06T2211/412
摘要： A method for generating a four-dimensional representation of a periodically moving target region is proposed. A motion-compensated three-dimensional image dataset is determined from two-dimensional projection images recorded from different projection directions. Estimation parameters that describe a non-periodic motion and are derived from a motion model formulated independently of the phase of the periodic motion with respect to the recording instants of the projection images are determined from the projection images, such that the three-dimensional image dataset represents a static reconstruction based on all projection images for a specific instant. The three-dimensional image dataset is animated from the estimation parameters used in its reconstruction. The motion information that is missing in the estimation parameters due to the two-dimensionality of the projection images is additionally determined using a boundary condition that describes the periodicity of the motion, and used for the animation.
摘要翻译：提出了一种用于产生周期性移动目标区域的四维表示的方法。从不同投影方向记录的二维投影图像确定运动补偿三维图像数据集。从投影图像确定描述非周期性运动并且从与投影图像的记录时刻独立于周期性运动的相位配置的运动模型导出的估计参数，使得三维图像数据集表示基于特定时刻的所有投影图像的静态重建。三维图像数据集是从其重建中使用的估计参数进行动画化的。使用描述运动的周期性并用于动画的边界条件另外确定由于投影图像的二维性而在估计参数中丢失的运动信息。

9. 发明申请

US20080089467A1 Method for recording x-ray images of an area lying outside a center of rotation of a C-arm system and the associated C-arm system 有权
公开(公告)号：US20080089467A1
公开(公告)日：2008-04-17
申请号：US11890353
申请日：2007-08-06
申请人： Gunter Lauritsch , Marcus Pfister
发明人： Gunter Lauritsch , Marcus Pfister
IPC分类号： H05G1/02 , H05G1/30
CPC分类号： A61B6/102 , A61B6/4441 , A61B6/4464 , A61B6/487 , A61B6/583 , A61B2090/364
摘要： The invention relates to a method for recording x-ray images with a C-arm system, which comprises an image recording system rotatable about a center of rotation in a recording plane, a number of x-ray fluoroscopic images of an area of interest of an object lying on an object supporting device are recorded at a plurality of angles of rotations by the image recording system, from which one or more cross-sectional images or a three dimensional can be reconstructed. The method is characterized in that the object supporting device is guided synchronously and in a non-colliding manner with the rotation of the image recording system, such that at every angle of rotation at which the recording of an image takes place, the area of interest of the object lies within a beam cone of the x-ray radiation beam of the image recording system.

10. 发明申请

US20060167357A1 Device for making visible a pathological change in a part of the body labeled with a fluorescent dye 失效
标题翻译：用于使用荧光染料标记的身体的一部分可见病理变化的装置
公开(公告)号：US20060167357A1
公开(公告)日：2006-07-27
申请号：US11330575
申请日：2006-01-12
申请人： Gunter Lauritsch , Marcus Pfister
发明人： Gunter Lauritsch , Marcus Pfister
IPC分类号： A61B6/00
CPC分类号： A61B5/6814 , A61B5/0059 , A61B5/0071 , A61B5/444 , A61B5/445
摘要： The invention relates to a device for making visible a pathological change in a part of a patient's body labeled with a fluorescent dye, the device having: a first selectable light source (11, 17), which emits light in the excitation wavelength range of the fluorescent dye, in order to trigger the emission of light in the emission wavelength range of the fluorescent dye, a second selectable light source, which emits visible light outside the emission wavelength of the fluorescent dye, and a means for selectively switching the first and the second light source on and off.
摘要翻译：本发明涉及一种用于使被标记有荧光染料的患者身体的一部分可见病理变化的装置，所述装置具有：第一可选择光源（11,17），其在所述荧光染料的激发波长范围内发射光荧光染料，为了触发在荧光染料的发射波长范围内的光的发射，第二可选择的光源，其在荧光染料的发射波长之外发射可见光，以及用于选择性地切换第一和第第二光源开关。

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