公开(公告)号：US20070195923A1

公开(公告)日：2007-08-23

申请号：US11568115

申请日：2005-03-31

申请人： Thomas Netsch ,  Georg Rose ,  Hermann Schomberg

发明人： Thomas Netsch ,  Georg Rose ,  Hermann Schomberg

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

CPC分类号： G06T11/005 ,  A61B6/027 ,  G06T2211/432 ,  Y10S378/901

摘要： A 3D image of a region of an object is computed from truncated cone beam projection data acquired with an x-ray device and a prior CT image representing a larger region of the object. The truncated projection data are extrapolated to derive pseudoprojection data associated with projection directions outside the detector, and an intermediate CT image is reconstructed based on the truncated projection data completed with the pseudoprojection data. The prior CT image is then registered with the intermediate CT image. Forward projection data associated with projection directions outside the detector are computed from the truncated projection data and the registered prior CT image. The 3D image is finally reconstructed based on the truncated projection data completed with the forward projection data.

摘要翻译： 使用由X射线装置获得的截头圆锥束投影数据和表示对象的较大区域的先前CT图像计算物体区域的3D图像。 外推截断的投影数据以导出与检测器外部的投影方向相关联的伪投影数据，并且基于用伪投影数据完成的截断的投影数据来重建中间CT图像。 然后将先前的CT图像与中间CT图像对准。 从截断的投影数据和注册的先前CT图像计算与检测器外部的投影方向相关联的前向投影数据。 基于用前向投影数据完成的截断的投影数据，最终重建3D图像。

公开(公告)号：US07440535B2

公开(公告)日：2008-10-21

申请号：US11568115

申请日：2005-03-31

申请人： Thomas Netsch ,  Georg Rose ,  Hermann Schomberg

发明人： Thomas Netsch ,  Georg Rose ,  Hermann Schomberg

IPC分类号： G01N23/00

CPC分类号： G06T11/005 ,  A61B6/027 ,  G06T2211/432 ,  Y10S378/901

摘要： A 3D image of a region of an object is computed from truncated cone beam projection data acquired with an x-ray device and a prior CT image representing a larger region of the object. The truncated projection data are extrapolated to derive pseudoprojection data associated with projection directions outside the detector, and an intermediate CT image is reconstructed based on the truncated projection data completed with the pseudoprojection data. The prior CT image is then registered with the intermediate CT image. Forward projection data associated with projection directions outside the detector are computed from the truncated projection data and the registered prior CT image. The 3D image is finally reconstructed based on the truncated projection data completed with the forward projection data.

摘要翻译： 使用由X射线装置获得的截头圆锥束投影数据和表示对象的较大区域的先前CT图像计算物体区域的3D图像。 外推截断的投影数据以导出与检测器外部的投影方向相关联的伪投影数据，并且基于用伪投影数据完成的截断的投影数据来重建中间CT图像。 然后将先前的CT图像与中间CT图像对准。 从截断的投影数据和注册的先前CT图像计算与检测器外部的投影方向相关联的前向投影数据。 基于用前向投影数据完成的截断的投影数据，最终重建3D图像。

公开(公告)号：US07782999B2

公开(公告)日：2010-08-24

申请号：US12096443

申请日：2006-09-16

申请人： Astrid Lewalter ,  Rainer Pietig ,  Guenter Zeitler ,  Kai Eck ,  Christoph Herrmann ,  Rainer Kiewitt ,  Christoph Loef ,  Oliver Muelhens ,  Carolina Ribbing ,  Georg Rose ,  Matthias Simon ,  Olaf Wischhusen

发明人： Astrid Lewalter ,  Rainer Pietig ,  Guenter Zeitler ,  Kai Eck ,  Christoph Herrmann ,  Rainer Kiewitt ,  Christoph Loef ,  Oliver Muelhens ,  Carolina Ribbing ,  Georg Rose ,  Matthias Simon ,  Olaf Wischhusen

IPC分类号： H05G1/60 ,  H01J35/30

CPC分类号： A61B6/032 ,  A61B6/027 ,  A61B6/4021 ,  A61B6/503 ,  A61B6/504 ,  H01J2235/086 ,  H05G1/52

摘要： Systems and methods for data acquisition in computed tomography (CT) applications are provided. The systems and methods are particularly adapted for scanning and acquiring/processing data in connection with high-power cone-beam CT applications. The electron beam is moved/scanned along the anode surface to multiple focal positions. Data acquisition for a full projection at one focus position and one view angle is achieved by activating each focus position multiple times during the data acquisition for one angle of the gantry. The detector array and associated data processing system are adapted to rapidly switch between the different focus positions during the acquisitions for one view angle and to collect all data belonging to the same projection into the same data set. Adaptive electron optics are utilized to move/scan the electron beam along the anode surface to the various focus positions. Alternatively, a plurality of cathodes may be provided for respective focus positions and the system may support fast switching therebetween to achieve desirably short spot times. The disclosed CT system permits greater power densities without risk of heat damage to the anode and effectively increases the track velocity of the electron beam on the anode surface. The CT system and associated data acquisition methods have particular utility in CT applications requiring increased time resolution and/or spatial resolution, e.g., cardiac CT applications.

摘要翻译： 提供了计算机断层摄影（CT）应用中数据采集的系统和方法。 该系统和方法特别适用于扫描和获取/处理与大功率锥束CT应用有关的数据。 电子束沿着阳极表面移动/扫描到多个焦点位置。 通过在台架的一个角度的数据采集过程中激活每个聚焦位置多次来实现在一个聚焦位置和一个视角下的全投影的数据采集。 检测器阵列和相关联的数据处理系统适于在一次视角的采集期间在不同聚焦位置之间快速切换，并且将属于相同投影的所有数据收集到同一数据集中。 使用自适应电子光学器件将电子束沿着阳极表面移动/扫描到各种焦点位置。 或者，可以为各个焦点位置设置多个阴极，并且系统可以支持它们之间的快速切换，以实现期望的短光斑时间。 所公开的CT系统允许更大的功率密度，而不会对阳极造成热损害的风险，并且有效地增加阳极表面上的电子束的轨道速度。 CT系统和相关数据采集方法在需要增加时间分辨率和/或空间分辨率（例如心脏CT应用）的CT应用中具有特别的用途。

公开(公告)号：US07424428B2

公开(公告)日：2008-09-09

申请号：US10220670

申请日：2002-01-08

申请人： Georg Rose ,  Juergen Te Vrugt

发明人： Georg Rose ,  Juergen Te Vrugt

IPC分类号： G10L15/18 ,  G06F17/27

CPC分类号： G10L15/26 ,  G10L15/19

摘要： An automatic dialog system for spoken inquiries into a database entry which contains several components available for inquiry, wherein speech recognition of a spoken utterance for inquiring into the database entry is supported by a language model which was prepared before a start of the dialog to which the spoken utterance belongs and which models a relative frequency of correlated occurrence of the components of the database entry provided for the inquiry in the spoken utterance of the dialog.

摘要翻译： 一种用于对数据库条目进行口头查询的自动对话系统，该数据库条目包含可用于查询的几个组件，其中用于查询数据库条目的口语话语的语音识别由在开始对话之前准备的语言模型支持， 讲话话语属于哪个模型，并且在对话的口语发音中为查询提供的数据库条目的组件的相关发生的相对频率建模。

公开(公告)号：US20080144904A1

公开(公告)日：2008-06-19

申请号：US10597713

申请日：2005-02-01

申请人： Jens Wiegert ,  Georg Rose ,  Jurgen Weese

发明人： Jens Wiegert ,  Georg Rose ,  Jurgen Weese

IPC分类号： G06K9/00

CPC分类号： G06T5/50 ,  G06T11/005 ,  G06T2207/30004

摘要： The invention relates to an apparatus and a method for the processing of reconstructed 3D images (I) in C-arm based volume imaging which often exhibit spatially slowly varying inhomogeneities caused by inconsistent projection data. To correct the images (I), a retrospective homogenization procedure is proposed. The image (I) is segmented (11, 12) into principal classes like bone, tissue and air based on their gray values. Only the tissue-regions (M) are then used as support in order to fit (14) a spatially slowly varying 2D baseline (B) representing the smooth shape of cupping or other inhomogeneities. Finally the inverse of the estimated 2D baseline is subtracted from the original slice (I) to correct for the inhomogeneities.

摘要翻译： 本发明涉及一种用于处理基于C臂的体积成像中的重建3D图像（I）的装置和方法，其经常表现出由不一致的投影数据引起的空间上缓慢变化的不均匀性。 为了校正图像（I），提出了回顾性均匀化程序。 图像（I）根据其灰度值被分段（11,12）成主要类，如骨，组织和空气。 然后仅使用组织区域（M）作为支撑体，以便适应（14）代表拔罐或其他不均匀性的平滑形状的空间上缓慢变化的2D基线（B）。 最后，从原始切片（I）中减去估计的2D基线的逆，以校正不均匀性。

公开(公告)号：US07103546B2

公开(公告)日：2006-09-05

申请号：US09923610

申请日：2001-08-07

申请人： Georg Rose

发明人： Georg Rose

IPC分类号： G10L15/08 ,  G10L15/22 ,  G06F17/20

CPC分类号： G10L15/065 ,  G10L15/19 ,  Y10S707/99935

摘要： A method of automatic recognition of company names in speech utterances includes generating at least one word sequence hypothesis by a speech recognizer from a speech utterance consisting of one or more words, comparing the word sequence hypothesis with the entries representing company names stored in a database, and selecting, in dependence on the result of the comparison, one company name as a recognition result.

摘要翻译： 在语音语音中自动识别公司名称的方法包括由语音识别器从包括一个或多个单词的语音语音中产生至少一个单词序列假设，将单词序列假设与表示存储在数据库中的公司名称的条目进行比较， 并根据比较结果选择一个公司名称作为识别结果。

公开(公告)号：US08175358B2

公开(公告)日：2012-05-08

申请号：US10598305

申请日：2005-03-04

申请人： Jürgen Weese ,  Georg Rose

发明人： Jürgen Weese ,  Georg Rose

IPC分类号： G06K9/00

CPC分类号： G06T11/006 ,  A61B6/481 ,  A61B6/504 ,  A61B6/507 ,  G06T2211/424

摘要： The invention relates to an apparatus and a method for the reconstruction of time-dependent cross-sectional images and may be applied for example in perfusion imaging in the vessel system (2) of a patient. According to the method, projections pij are generated from a number M of different directions di and at different times tij. Moreover, the time-dependent intensity function I(x,t) of the reconstructed volume is approximated by a predetermined model function I*(a(x),t), wherein the unknown parameter vector a(x) is estimated for each voxel x. This estimation may be done using the update functions of known reconstruction algorithms like ART for at least N projections pij in each iteration step.

摘要翻译： 本发明涉及用于重建时间依赖性横截面图像的装置和方法，并且可以应用于例如在患者的血管系统（2）中的灌注成像。 根据该方法，从不同方向di的数M和不同时刻tij生成投影pij。 此外，重建体积的时间依赖强度函数I（x，t）由预定的模型函数I *（a（x），t）近似，其中针对每个体素估计未知参数向量a（x） X。 可以使用已知的重建算法的更新函数（例如在每个迭代步骤中用于至少N个投影pij的ART）来完成该估计。

公开(公告)号：US20080260231A1

公开(公告)日：2008-10-23

申请号：US10598305

申请日：2005-03-04

申请人： Jurgen Weese ,  Georg Rose

发明人： Jurgen Weese ,  Georg Rose

IPC分类号： G06K9/00

CPC分类号： G06T11/006 ,  A61B6/481 ,  A61B6/504 ,  A61B6/507 ,  G06T2211/424

摘要： The invention relates to an apparatus and a method for the reconstruction of time-dependent cross-sectional images and may be applied for example in perfusion imaging in the vessel system (2) of a patient. According to the method, projections pij are generated from a number M of different directions d and at different times tij. Moreover, the time-dependent intensity function I(x,t) of the reconstructed volume is approximated by a predetermined model function I*(a(x),t), wherein the unknown parameter vector a(x) is estimated for each voxel x. This estimation may be done using the update functions of known reconstruction algorithms like ART for at least N projections pij in each iteration step.

摘要翻译： 本发明涉及用于重建时间依赖性横截面图像的装置和方法，并且可以应用于例如在患者的血管系统（2）中的灌注成像。 根据该方法，从不同方向d的数M和不同时间t i上产生投影p i 。 此外，重建体积的时间依赖强度函数I（x，t）由预定的模型函数I *（（x），t））近似，其中未知参数向量 对于每个体素x估计U STYLE =“SINGLE”> a（x）。 可以在每个迭代步骤中使用已知的重建算法的更新功能（例如ART至少N个投影）来完成该估计。