公开(公告)号：US20080013675A1

公开(公告)日：2008-01-17

申请号：US11824456

申请日：2007-06-29

申请人： Jan Boese ,  Gunter Lauritsch ,  Thomas Redel

发明人： Jan Boese ,  Gunter Lauritsch ,  Thomas Redel

IPC分类号： A61B6/00

CPC分类号： A61B6/032 ,  A61B6/4441 ,  Y10S378/901

摘要： An object (5) undergoing examination is located within the range of a swiveling axis (4) around which an X-ray source (1) is swiveled during a plurality of mutually discrete swiveling actions. An X-ray detector (2) is swiveled correspondingly so that it will at any time be located diametrically opposite the X-ray source (1) with reference to the swiveling axis (4). Projection datasets (P) of the object (5) undergoing examination are recorded at swiveling angles (α) of the X-ray source (1) during the swiveling actions and stored. Each projection dataset (P) is assigned the respective swiveling angle (α) and a recording instant (t). Together with the swiveling angle (α) assigned to the respective projection dataset (P), each data element of each projection dataset (P) defines a projection line along which an X-ray beam has traveled on its way from the X-ray source (1) to the X-ray detector (2). The projection datasets (P) form recording groups each of which corresponds with the projection datasets (P) that were recorded during a single swiveling action. A computer (15) determines at least one reconstruction group of reconstruction datasets using the projection datasets (P). Each reconstruction dataset contains at least one reconstruction data value assigned to a reconstruction line. Using a temporal interpolation, the computer (15) determines the reconstruction group's reconstruction datasets in such a way that they refer to a uniform reconstruction time. The computer (15) determines a reconstruction of the object (5) undergoing examination using the reconstruction group's reconstruction datasets.

摘要翻译： 正在进行检查的物体（5）位于旋转轴线（4）的范围内，在多个相互离散的旋转动作期间，X射线源（1）绕其旋转。 X射线检测器（2）相应地旋转，使得它将随时相对于旋转轴线（4）与X射线源（1）沿径向相对。 正在进行检查的物体（5）的投影数据集（P）在旋转动作期间以X射线源（1）的旋转角度（α）记录并存储。 每个投影数据集（P）被分配相应的旋转角（α）和记录时刻（t）。 与分配给相应的投影数据集（P）的旋转角（α）一起，每个投影数据集（P）的每个数据元素定义了一条投影线，X射线束沿着该投影线从X射线源 （1）到X射线检测器（2）。 投影数据集（P）形成记录组，每个记录组对应于在单次旋转动作期间记录的投影数据集（P）。 计算机（15）使用投影数据集（P）确定重建数据集的至少一个重建组。 每个重建数据集包含分配给重建线的至少一个重建数据值。 使用时间插值，计算机（15）以这样的方式确定重建组的重建数据集，即它们指的是统一的重建时间。 计算机（15）使用重建组的重建数据集确定正在进行检查的对象（5）的重构。

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：US20060067459A1

公开(公告)日：2006-03-30

申请号：US11238552

申请日：2005-09-29

申请人： Jan Boese ,  Gunter Lauritsch

发明人： Jan Boese ,  Gunter Lauritsch

IPC分类号： H05G1/60

CPC分类号： G06T11/005 ,  A61B5/0402 ,  A61B5/0456 ,  A61B5/7207 ,  A61B6/02 ,  A61B6/032 ,  A61B6/503 ,  A61B6/504 ,  A61B6/541 ,  G06T2211/412 ,  G06T2211/421

摘要： A precise and comparatively simple method for generating a three-dimensional image data record of a moving object using X-ray tomography and a device that is particularly suitable for implementing the method with an X-ray emitter/detector unit supported such that it can be rotated and with an evaluation unit are specified. According to the invention a number of two-dimensional raw images are grouped according to a cyclical relative time at least two preliminary 3D image data records respectively are generated from raw images that correspond to one an-other according to this grouping, at least one movement matrix is derived by comparing two preliminary 3D image data re-cords used as the source data record and the target data record respectively, a 3D image data record with compensation for movement corresponding to a reference time of the source data record is generated by applying the or each movement matrix to the associated target data record and the or each 3D image data record with compensation for movement is added to at least one further 3D image data record with compensation for movement or to another preliminary 3D-image data record corresponding to the same reference time.

摘要翻译： 一种用于使用X射线层析成像生成运动物体的三维图像数据记录的精确且相对简单的方法，以及特别适合于利用支持X射线发射器/检测器单元来实现该方法的装置，使得其可以 指定了旋转和评估单元。 根据本发明，根据循环相对时间对多个二维原始图像进行分组，分别根据该分组从对应于另一个的原始图像生成至少两个初步3D图像数据记录，至少一个运动 通过比较分别用作源数据记录和目标数据记录的两个初步3D图像数据重新组合来导出矩阵，通过应用源数据记录的参考时间来对与移动源数据记录的参考时间相对应的移动进行补偿的3D图像数据记录 或每个运动矩阵到相关联的目标数据记录，并且具有补偿运动的每个3D图像数据记录被添加到至少一个另外的3D图像数据记录，补偿运动或对应于其的另一预备3D图像数据记录 参考时间。

公开(公告)号：US20070030945A1

公开(公告)日：2007-02-08

申请号：US11400833

申请日：2006-04-07

申请人： Jan Boese ,  Gunter Lauritsch

发明人： Jan Boese ,  Gunter Lauritsch

IPC分类号： A61B6/00 ,  G01N23/00 ,  G21K1/12 ,  H05G1/60

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. It controls the X-ray arrangement such that, respectively at a plurality of angular positions at recording times, projections of an object to be examined arranged in the region of the pivot axis and moving iteratively are detected and supplied to the control device, which stores the projections and the corresponding angular positions. The control device also receives a phase signal referring to the object to be examined and assigns information corresponding to a phase position of the object to be examined to each stored projection. For the reconstruction, a computer selects those projections where the phase position corresponds at least approximately to a reconstruction phase position. For each angular position in which it has selected at least one of the projections the computer checks whether it has selected one or more projections. If the computer has selected a 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. Using the reconstruction projections the computer then detects a three-dimensional reconstruction of the object to be examined.

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。 它控制X射线布置，使得分别在记录时间的多个角位置处检测被布置在枢转轴线的区域并且迭代地移动的被检体的突起并被提供给控制装置，该控制装置存储 突起和相应的角位置。 控制装置还接收参照被检查对象的相位信号，并将与被检查对象的相位位置对应的信息分配给各存储的投影。 对于重建，计算机选择相位位置至少大致对应于重建相位位置的那些投影。 对于其中选择至少一个投影的每个角度位置，计算机检查其是否选择了一个或多个投影。 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。 使用重建投影，计算机然后检测待检查对象的三维重建。

公开(公告)号：US20060285632A1

公开(公告)日：2006-12-21

申请号：US11453604

申请日：2006-06-15

申请人： Jan Boese ,  Gunter Lauritsch

发明人： Jan Boese ,  Gunter Lauritsch

IPC分类号： A61B6/00 ,  G01N23/00 ,  G21K1/12 ,  H05G1/60

CPC分类号： A61B6/032 ,  A61B6/5217 ,  A61B6/541 ,  G06T11/005 ,  G06T2211/404 ,  G06T2211/412 ,  Y10S378/901

摘要： The invention relates to a method and device for reconstructing a 3D image data set of a moving object from a set of projection images, which were recorded at least partially one after the other from different projection directions. The projection images are hereby assigned by ECG gating to a motion phase of the object in each instance and an incomplete 3D image of the object is computed in this motion phase from these few projection images using local tomography. Motion fields are determined from these 3D images and are used during the final 3D image reconstruction for motion corrections.

摘要翻译： 本发明涉及一种用于从一组投影图像重建运动物体的3D图像数据集的方法和装置，其从不同的投影方向至少部分地一个接一个地记录。 因此，通过ECG门控将投影图像分配给每个实例中的对象的运动相位，并且使用局部断层摄影从这些几个投影图像在该运动相位中计算对象的不完整3D图像。 运动场由这些3D图像确定，并在运动校正的最终3D图像重建期间使用。

公开(公告)号：US07916827B2

公开(公告)日：2011-03-29

申请号：US11824456

申请日：2007-06-29

申请人： Jan Boese ,  Günter Lauritsch ,  Thomas Redel

发明人： Jan Boese ,  Günter Lauritsch ,  Thomas Redel

IPC分类号： A61B6/03

CPC分类号： A61B6/032 ,  A61B6/4441 ,  Y10S378/901

摘要： The invention relates to a method for evaluating projection datasets of an object undergoing examination. Each projection dataset is assigned a swiveling angle and a recording instant. Each data element of each projection dataset defines a projection line along which an X-ray beam has traveled from an X-ray source to an X-ray detector. The projection datasets form recording groups each of which corresponds with the projection datasets that were recorded during a single swiveling action. A computer determines reconstruction datasets using the projection datasets. Each reconstruction dataset contains at least one reconstruction data value assigned to a reconstruction line. Using a temporal interpolation, the computer determines the reconstruction datasets in such a way that they refer to a uniform reconstruction time. The computer determines a reconstruction of the object undergoing examination using the reconstruction datasets.

摘要翻译： 本发明涉及一种用于评估正在进行检查的对象的投影数据集的方法。 每个投影数据集被分配一个旋转角度和一个记录时刻。 每个投影数据集的每个数据元素定义了X射线束从X射线源行进到X射线检测器的投影线。 投影数据集形成记录组，每个记录组与在单次旋转动作期间记录的投影数据集相对应。 计算机使用投影数据集确定重建数据集。 每个重建数据集包含分配给重建线的至少一个重建数据值。 使用时间插值，计算机以这样的方式确定重建数据集，即它们指的是统一的重建时间。 计算机使用重建数据集确定正在进行检查的对象的重建。

公开(公告)号：US20070297678A1

公开(公告)日：2007-12-27

申请号：US11821054

申请日：2007-06-21

申请人： Jan Boese ,  Estelle Camus ,  Marcus Pfister ,  Thomas Redel

发明人： Jan Boese ,  Estelle Camus ,  Marcus Pfister ,  Thomas Redel

IPC分类号： G06K9/46 ,  G06K9/66

CPC分类号： G06K9/4642 ,  G06K2209/05

摘要： There is described an analysis method for at least one image data record of an examination object, wherein each image data record features a multiplicity of image data elements. A position in a multidimensional space is assigned to each image data element. Each image data element features an image data value. The image data values of positionally corresponding image data elements of the image data records are specified by means of at least essentially positionally identical regions of the examination object. A computer automatically divides the image data records into empty regions and signal regions, applying an overall assignment rule which is based on the image data values of the image data elements of a plurality of image data records, such that each image data element of each image data record is assigned to either its empty region or its signal region. For each image data record, the computer automatically determines a closed outline which fully contains the signal region of the relevant image data record and, on the basis of the closed outline of the relevant image data record, determines an analysis region such that a further analysis of the relevant image data record can be restricted to its analysis region.

摘要翻译： 描述了用于检查对象的至少一个图像数据记录的分析方法，其中每个图像数据记录具有多个图像数据元素。 将多维空间中的位置分配给每个图像数据元素。 每个图像数据元素具有图像数据值。 图像数据记录的位置对应的图像数据元素的图像数据值通过至少基本位置上相同的检查对象的区域来指定。 计算机自动将图像数据记录分为空区域和信号区域，应用基于多个图像数据记录的图像数据元素的图像数据值的总分配规则，使得每个图像的每个图像数据元素 数据记录被分配到其空区域或其信号区域。 对于每个图像数据记录，计算机自动确定完全包含相关图像数据记录的信号区域的封闭轮廓，并且基于相关图像数据记录的闭合轮廓确定分析区域，使得进一步分析 的相关图像数据记录可以限于其分析区域。

公开(公告)号：US07734329B2

公开(公告)日：2010-06-08

申请号：US11484196

申请日：2006-07-11

申请人： Jan Boese ,  Thomas Redel

发明人： Jan Boese ,  Thomas Redel

IPC分类号： A61B5/05

CPC分类号： A61B6/547 ,  A61B5/055 ,  A61B6/12 ,  A61B6/4441 ,  A61B6/466 ,  A61B10/0233 ,  A61B18/1477 ,  A61B34/10 ,  A61B34/20 ,  A61B90/36 ,  A61B2018/1425 ,  A61B2090/364 ,  A61B2090/376

摘要： Method for pre-interventional planning of a 2D fluoroscopy projection for an interventional entry using a fixed instrument, comprising the following steps: a) Recording a 3D data set, b) Planning the intervention, c) Planning the optimum projection direction, d) Registering the 3D data set with a navigation system and a 2D fluoroscopy system, e) Transmission of the intervention data to the navigation system, f) Computing the position of the fluoroscopy system, and g) Executing the interventional entry under fluoroscopy.

摘要翻译： 包括以下步骤：a）记录3D数据集，b）规划干预，c）规划最佳投影方向，d）注册 具有导航系统和2D荧光透视系统的3D数据集，e）将干预数据传输到导航系统，f）计算荧光透视系统的位置，以及g）在荧光透视下执行介入入口。

公开(公告)号：US20070021668A1

公开(公告)日：2007-01-25

申请号：US11484196

申请日：2006-07-11

申请人： Jan Boese ,  Thomas Redel

发明人： Jan Boese ,  Thomas Redel

IPC分类号： A61B5/05

CPC分类号： A61B6/547 ,  A61B5/055 ,  A61B6/12 ,  A61B6/4441 ,  A61B6/466 ,  A61B10/0233 ,  A61B18/1477 ,  A61B34/10 ,  A61B34/20 ,  A61B90/36 ,  A61B2018/1425 ,  A61B2090/364 ,  A61B2090/376

摘要： Method for pre-interventional planning of a 2D fluoroscopy projection for an interventional entry using a fixed instrument, comprising the following steps: a) Recording a 3D data set, b) Planning the intervention, c) Planning the optimum projection direction, d) Registering the 3D data set with a navigation system and a 2D fluoroscopy system, e) Transmission of the intervention data to the navigation system, f) Computing the position of the fluoroscopy system, and g) Executing the interventional entry under fluoroscopy.

摘要翻译： 包括以下步骤：a）记录3D数据集，b）规划干预，c）规划最佳投影方向，d）注册 具有导航系统和2D荧光透视系统的3D数据集，e）将干预数据传输到导航系统，f）计算荧光透视系统的位置，以及g）在荧光透视下执行介入入口。