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31. 发明申请

US20050098731A1 Spatially patterned light-blocking layers for radiation imaging detectors 有权
标题翻译：用于辐射成像检测器的空间图案遮光层
公开(公告)号：US20050098731A1
公开(公告)日：2005-05-12
申请号：US10705091
申请日：2003-11-10
申请人： Paul Granfors , Richard Aufrichtig , Douglas Albagli
发明人： Paul Granfors , Richard Aufrichtig , Douglas Albagli
IPC分类号： G01T1/24 , G01T1/29 , H01L27/146
CPC分类号： G01T1/2928 , H01L27/14609 , H01L27/14623 , H01L27/14663
摘要： Spatially patterned light-blocking layers for radiation imaging detectors are described. Embodiments comprise spatially patterned light-blocking layers for an amorphous silicon flat panel x-ray detector, wherein the spatially patterned light-blocking layer blocks light from a predetermined number of switching elements in the detector, wherein the predetermined number comprises less than all of the switching elements in the detector. These light-blocking layers may block light from each switching element in a predetermined arrangement of switching elements that are read out last, or in any other suitable pattern.
摘要翻译：描述了用于辐射成像检测器的空间图案遮光层。实施例包括用于非晶硅平板X射线检测器的空间图案化阻光层，其中空间图案化阻光层阻挡来自检测器中预定数量的开关元件的光，其中预定数量包括小于全部检测器中的开关元件。这些遮光层可以以最后读出的开关元件的预定布置或以任何其它合适的图案阻挡来自每个开关元件的光。

32. 发明授权

US06694047B1 Method and apparatus for automated image quality evaluation of X-ray systems using any of multiple phantoms 有权
标题翻译：用于使用多个幻影中的任一个的X射线系统的自动图像质量评估的方法和装置
公开(公告)号：US06694047B1
公开(公告)日：2004-02-17
申请号：US09354389
申请日：1999-07-15
申请人： Farshid Farrokhnia , Kenneth Scott Kump , Richard Aufrichtig , Alexander Y. Tokman
发明人： Farshid Farrokhnia , Kenneth Scott Kump , Richard Aufrichtig , Alexander Y. Tokman
IPC分类号： G06K900
CPC分类号： A61B6/583
摘要： A system for automated x-ray system parameter evaluation is provided. A physical model or template is created and stored in the system, one for each desired phantom. The automated system imports a grayscale x-ray image and then processes the image to determine image components. First, a histogram of the image is created, then a threshold in the histogram is determined and the imported image is binarized with respect to the threshold. Next, connected component analysis is used to determine image components. If the components do not match, then the image is rejected. The system next locates landmarks in the imported image corresponding to expected physical structures. The landmarks include a perimeter ring, vertical and horizontal line segments, and fiducials. The system uses the landmarks to predict Regions of Interest (ROIs) where measurement of the x-ray system parameters takes place. Finally, the x-ray system parameters are measured in the identified ROIs.
摘要翻译：提供了一种自动X射线系统参数评估系统。物理模型或模板被创建并存储在系统中，每个想要的幻影一个。自动化系统导入灰度x射线图像，然后处理图像以确定图像分量。首先，创建图像的直方图，然后确定直方图中的阈值，并将导入的图像相对于阈值二值化。接下来，使用连通分量分析来确定图像分量。如果组件不匹配，则图像被拒绝。系统接下来根据预期的物理结构定位导入的图像中的地标。地标包括周边环，垂直和水平线段以及基准点。该系统使用地标来预测发生X射线系统参数测量的感兴趣区域（ROI）。最后，在所识别的ROI中测量x射线系统参数。

33. 发明授权

US06663281B2 X-ray detector monitoring 有权
标题翻译： X射线探测器监测
公开(公告)号：US06663281B2
公开(公告)日：2003-12-16
申请号：US09682591
申请日：2001-09-25
申请人： Richard Aufrichtig , Paul R. Granfors , Gerhard Brunst , Kenneth S. Kump
发明人： Richard Aufrichtig , Paul R. Granfors , Gerhard Brunst , Kenneth S. Kump
IPC分类号： G01D1800
CPC分类号： H04N5/2178 , G09G2320/0693 , G09G2330/08 , G09G2330/10 , H04N5/32
摘要： An x-ray system (14) including a source of x-rays (15) and a detector (22) monitors the detector with a control (36) that calibrates the detector during a calibration phase of operation and powers the detector during use phases of operation occurring at different times. A processor (28, 36) reads the data created by the pixel elements, analyzes the data and identifies pixel elements corresponding to data indicating defective pixel elements during the calibration phase of operation and during a predetermined portion of a plurality of the use phases of operation.
摘要翻译：包括X射线源（15）和检测器（22）的X射线系统（14）利用控制器（36）对检测器进行监视，该控制器在校准操作阶段期间对检测器进行校准，并在使用阶段为检测器供电的操作发生在不同的时间。处理器（28,36）读取由像素元素创建的数据，分析数据并且在操作的校准阶段期间和在多个使用操作阶段的预定部分期间识别与指示缺陷像素元素的数据相对应的像素元素。

34. 发明授权

US06422751B1 Method and system for prediction of exposure and dose area product for radiographic x-ray imaging 有权
标题翻译：用于放射X光成像的暴露和剂量面积积预测的方法和系统
公开(公告)号：US06422751B1
公开(公告)日：2002-07-23
申请号：US09130779
申请日：1998-08-07
申请人： Richard Aufrichtig , Gary F. Relihan , Clarence L. Gordon, III , Baoming Ma
发明人： Richard Aufrichtig , Gary F. Relihan , Clarence L. Gordon, III , Baoming Ma
IPC分类号： G01D1800
CPC分类号： H05G1/28
摘要： A neural network prediction has been provided for predicting radiation exposure and/or Air-Kerma at a predefined arbitrary distance during an x-ray exposure; and for predicting radiation exposure and/or Air-Kerma area product for a radiographic x-ray exposure. The Air-Kerma levels are predicted directly from the x-ray exposure parameters. The method or model is provided to predict the radiation exposure or Air-Kerma for an arbitrary radiographic x-ray exposure by providing input variables to identify the spectral characteristics of the x-ray beam, providing a neural net which has been trained to calculate the exposure or Air-Kerma value, and by scaling the neural net output by the calibrated tube efficiency, and the actual current through the x-ray tube and the duration of the exposure. The prediction for exposure/Air-Kerma further applies the actual source-to-object distance, and the prediction for exposure/Air-Kerma area product further applies the actual imaged field area at a source-to-image distance.
摘要翻译：已经提供了神经网络预测用于在x射线曝光期间以预定义的任意距离预测辐射暴露和/或空气凯尔玛; 并用于预测放射线照射和/或Air-Kerma区域产品用于放射X光曝光。空气凯尔玛水平可以直接从x射线曝光参数预测。提供该方法或模型以通过提供输入变量来识别X射线束的光谱特征来预测用于任意射线照相X射线曝光的辐射暴露或空气 - 凯尔马，提供已经被训练以计算曝光或空气凯马值，以及通过校准管效率和通过X射线管的实际电流和曝光持续时间缩放神经网络输出。对于曝光/空气凯马的预测进一步应用实际的源对象距离，并且曝光/空气 - 凯马面积产品的预测进一步在源到图像距离处应用实际的成像场区域。

35. 发明授权

US06393097B1 Digital detector method for dual energy imaging 失效
标题翻译：用于双能量成像的数字检测器方法
公开(公告)号：US06393097B1
公开(公告)日：2002-05-21
申请号：US09747864
申请日：2000-12-22
申请人： Richard Aufrichtig , Harrie Netel , Paul R. Granfors , Gerhard Brunst
发明人： Richard Aufrichtig , Harrie Netel , Paul R. Granfors , Gerhard Brunst
IPC分类号： G01T120
CPC分类号： H04N5/325 , G01T1/1644 , G01T1/2018 , H04N5/32
摘要： A method for minimizing motion artifacts in Dual Energy Subtraction digital radiographic imaging applications by minimizing the time lapse between the two x-ray exposure frames. This is accomplished by acquiring the two x-ray exposure frames relatively consecutively without a corresponding offset frame reading in-between the two x-ray frame exposures. Preferably, the offset frames are acquired following the x-ray exposure frames with a corresponding timing sequence which is correlated to the x-ray frame exposure and reading sequence. The method includes the steps of exposing a radiographic detector at a first energy level for a time period t1; reading the radiographic detector to obtain a first exposure reading; exposing the radiographic detector at a second energy level for a time period t2; reading the radiographic detector to obtain a second exposure reading; after a time period equal to t1, reading the radiographic detector to obtain an offset reading; and subtracting the offset reading from the first and second exposure readings.
摘要翻译：一种通过最小化两个X射线曝光帧之间的时间间隔来最小化双能量减影数字放射照相成像应用中的运动伪影的方法。这通过相对连续地获取两个X射线曝光帧而在两个x射线帧曝光之间没有相应的偏移帧读取来实现。优选地，在具有与x射线帧曝光和读取序列相关的相应定时序列的x射线曝光帧之后获取偏移帧。该方法包括以下步骤：在第一能级暴露一时间段t1的射线检测器; 读取放射线检测器以获得第一曝光读数; 将放射线检测器在第二能级暴露一段时间t2; 读取放射线检测器以获得第二曝光读数; 在等于t1的时间之后，读取放射线检测器以获得偏移读数; 并从第一和第二曝光读数减去偏移读数。

36. 发明授权

US06359961B1 Apparatus and methods for stereo radiography including remote control via a network 失效
标题翻译：用于立体射线照相术的装置和方法，包括经由网络的远程控制
公开(公告)号：US06359961B1
公开(公告)日：2002-03-19
申请号：US09473283
申请日：1999-12-28
申请人： Richard Aufrichtig , Jeffrey A. Kautzer
发明人： Richard Aufrichtig , Jeffrey A. Kautzer
IPC分类号： A61B602
CPC分类号： A61B6/548 , A61B6/022 , A61B6/4464 , A61B6/4476 , A61B6/581 , G01N23/04 , H04N13/194 , H04N13/207 , H04N13/221 , H04N13/239 , H04N13/254 , H04N13/296 , H04N13/305 , H04N13/31 , H04N13/334 , H04N13/341 , H04N13/398 , H04N2013/0081
摘要： A radiographic imaging system includes an X-ray emitter, an X-ray detector, and a network. The X-ray emitter is actuatable to emit an X-ray beam centered about an X-ray beam axis. The X-ray detector has a generally planar configuration and is situated within the path of the X-ray beam to thereby generate an image when the X-ray detector receives the X-ray beam. The network couples at least one of the X-ray emitter and X-ray detector to a remote facility. The network provides the X-ray emitter and the X-ray detector with remote services from the remote facility. A corresponding method is also provided.
摘要翻译：射线照相成像系统包括X射线发射器，X射线检测器和网络。 X射线发射器是致动的，以发射以X射线束轴为中心的X射线束。 X射线检测器具有大致平面的构造，并且位于X射线束的路径内，从而当X射线检测器接收到X射线束时产生图像。网络将至少一个X射线发射器和X射线检测器耦合到远程设备。该网络为远程设备提供了远程服务的X射线发射器和X射线探测器。还提供了相应的方法。

37. 发明授权

US6149301A X-ray target centering apparatus for radiographic imaging system 失效
标题翻译：用于射线成像系统的X射线靶定心装置
公开(公告)号：US6149301A
公开(公告)日：2000-11-21
申请号：US224241
申请日：1998-12-30
申请人： Jeffrey Alan Kautzer , Richard Aufrichtig
发明人： Jeffrey Alan Kautzer , Richard Aufrichtig
IPC分类号： A61B6/06 , A61B6/08
CPC分类号： A61B6/08 , A61B6/06
摘要： An apparatus for properly centering and/or collimating an X-ray beam with respect to a target to be radiographically imaged. A field definer is situated between an X-ray source and an X-ray detector at the location where the target is to be situated. The field definer includes a pair of stops between which the target may be located, and the stops may be horizontally relocated relative to each other to be placed in abutment with the target. A sensor in communication with the stops produces a signal dependent on the distance between the stops, and a controller utilizes this signal to adjust the X-ray source to emit radiation in a desired area with respect to the field between the stops. As an example, a target may be situated between the stops, the stops may be adjusted in abutment with the target, and the X-ray source will then be collimated to emit a radiation beam which is incident only on the target between the stops.
摘要翻译：一种用于使X射线束相对于被放射照相成像的靶正确定心和/或准直的装置。场定位器位于X射线源和X射线探测器之间的目标位置。场定义器包括一对停靠点，目标可以位于该位置之间，并且止挡件可以相对于彼此水平重新定位成与目标邻接。与停止器通信的传感器产生取决于停止点之间的距离的信号，并且控制器利用该信号来调整X射线源以相对于停止点之间的场发射所需区域中的辐射。作为示例，目标可以位于停止点之间，可以将停止点调整为与目标邻接，然后X射线源将被准直以发射仅在入站点之间入射到靶上的辐射束。

38. 发明授权

US5841835A Apparatus and method for automatic monitoring and assessment of image quality in x-ray systems 失效
标题翻译：用于自动监测和评估x射线系统图像质量的装置和方法
公开(公告)号：US5841835A
公开(公告)日：1998-11-24
申请号：US823037
申请日：1997-03-31
申请人： Richard Aufrichtig , Alexander Y. Tokman
发明人： Richard Aufrichtig , Alexander Y. Tokman
IPC分类号： A61B6/00 , G06T1/00 , H05G1/26 , H05G1/60 , G01D18/00
CPC分类号： A61B6/583 , H05G1/26 , H05G1/60
摘要： An image quality test phantom tool is provided for use in the calibration and standardization of digital x-ray fluoroscopy and radiography systems. A composite phantom has a base for providing mechanical stability, a mesh with a central cut-out overlaid on the base, inserts positioned in the cut-out, and a carrier for housing the composite phantom. A digital image of the phantom is processed to compute x-ray system image quality measurements.
摘要翻译：提供图像质量测试幻影工具，用于数字X射线透视和射线照相系统的校准和标准化。复合体模具有用于提供机械稳定性的基座，具有覆盖在基座上的中心切口的网，位于切口中的插入件和用于容纳复合体模的托架。处理虚像的数字图像以计算x射线系统图像质量测量。

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