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1. 发明申请

US20070009088A1 System and method for imaging using distributed X-ray sources 审中-公开
标题翻译：使用分布式X射线源成像的系统和方法
公开(公告)号：US20070009088A1
公开(公告)日：2007-01-11
申请号：US11176418
申请日：2005-07-06
申请人： Peter Edic , Bernhard Claus , Jeffrey Eberhard , James Miller , David Langan , Mark Vermilyea , Joseph Manak , Christopher Unger
发明人： Peter Edic , Bernhard Claus , Jeffrey Eberhard , James Miller , David Langan , Mark Vermilyea , Joseph Manak , Christopher Unger
IPC分类号： G01N23/04
CPC分类号： G01N23/046 , A61B6/027 , G01N2223/419 , G01N2223/612
摘要： An X-ray imaging system is provided. The X-ray imaging system includes a distributed X-ray source and a detector. The distributed X-ray source is configured to emit X-rays from a plurality of emission points arranged as a substantially linear segment, a substantially arcuate segment, a curvilinear segment, or a substantially non-planar surface and the detector is configured to generate a plurality of signals in response to X-rays incident upon the detector.
摘要翻译：提供X射线成像系统。 X射线成像系统包括分布式X射线源和检测器。分布式X射线源被配置为从布置成基本上线性的段，基本上弓形的段，曲线段或基本上非平面的表面的多个发射点发射X射线，并且检测器被配置为产生响应于入射到检测器上的X射线的多个信号。

2. 发明申请

US20060133564A1 Method and apparatus for correcting motion in image reconstruction 有权
标题翻译：用于校正图像重建中运动的方法和装置
公开(公告)号：US20060133564A1
公开(公告)日：2006-06-22
申请号：US11018030
申请日：2004-12-21
申请人： David Langan , Peter Edic , Abdalmajeid Alyassin , Bernhard Claus , Joseph Manak , James Miller
发明人： David Langan , Peter Edic , Abdalmajeid Alyassin , Bernhard Claus , Joseph Manak , James Miller
IPC分类号： A61B6/00 , G01N23/00 , G21K1/12 , H05G1/60
CPC分类号： G06T11/005 , A61B6/5258 , G01N23/046 , G01N2223/419 , G01N2223/612 , G06T7/20 , G06T2211/412 , G06T2211/436
摘要： A plurality of projection images are acquired over an angular range during the slow rotation of a C-arm gantry having a source and detector. Phase-specific reconstructions are generated from the plurality of projections, wherein each phase-specific reconstruction is generated generally from projections acquired at or near the respective phase. In one embodiment, a plurality of motion estimates are generated based upon the phase-specific reconstructions. One or more motion-corrected reconstructions may be generated using the respective motion estimates and projections. The motion-corrected reconstructions may be associated to form motion-corrected volume renderings.
摘要翻译：在具有源和检测器的C臂架的慢旋转期间，在角度范围内获取多个投影图像。从多个投影产生相位特定的重建，其中每个相位特定的重建通常来自于在各个相位处或附近获取的投影。在一个实施例中，基于相位特定重建产生多个运动估计。可以使用相应的运动估计和投影来生成一个或多个运动校正重建。可以将运动校正的重建相关联以形成运动校正的体积渲染。

3. 发明授权

US07782998B2 Method and apparatus for correcting motion in image reconstruction 有权
标题翻译：用于校正图像重建中运动的方法和装置
公开(公告)号：US07782998B2
公开(公告)日：2010-08-24
申请号：US11018030
申请日：2004-12-21
申请人： David Langan , Peter Edic , Abdalmajeid Alyassin , Bernhard Claus , Joseph Manak , James V. Miller
发明人： David Langan , Peter Edic , Abdalmajeid Alyassin , Bernhard Claus , Joseph Manak , James V. Miller
IPC分类号： A61B6/00
CPC分类号： G06T11/005 , A61B6/5258 , G01N23/046 , G01N2223/419 , G01N2223/612 , G06T7/20 , G06T2211/412 , G06T2211/436
摘要： A plurality of projection images are acquired over an angular range during the slow rotation of a C-arm gantry having a source and detector. Phase-specific reconstructions are generated from the plurality of projections, wherein each phase-specific reconstruction is generated generally from projections acquired at or near the respective phase. In one embodiment, a plurality of motion estimates are generated based upon the phase-specific reconstructions. One or more motion-corrected reconstructions may be generated using the respective motion estimates and projections. The motion-corrected reconstructions may be associated to form motion-corrected volume renderings.
摘要翻译：在具有源和检测器的C臂架的慢旋转期间，在角度范围内获取多个投影图像。从多个投影产生相位特定的重建，其中每个相位特定的重建通常来自于在各个相位处或附近获取的投影。在一个实施例中，基于相位特定重建产生多个运动估计。可以使用相应的运动估计和投影来生成一个或多个运动校正重建。可以将运动校正的重建相关联以形成运动校正的体积渲染。

4. 发明申请

US20050135558A1 Fluoroscopic tomosynthesis system and method 有权
标题翻译：透视层析合成系统及方法
公开(公告)号：US20050135558A1
公开(公告)日：2005-06-23
申请号：US10745315
申请日：2003-12-22
申请人： Bernhard Erich Claus , Jeffrey Eberhard , David Langan
发明人： Bernhard Erich Claus , Jeffrey Eberhard , David Langan
IPC分类号： A61B6/00 , A61B6/02 , A61B6/12 , G06T11/00 , G03C9/00 , G21K4/00
CPC分类号： A61B6/504 , A61B6/02 , A61B6/481 , G06T11/006 , G06T2211/436
摘要： A technique is provided for generating a three-dimensional image from fluoroscopic projection images. The technique allows for the acquisition of fluoroscopic images at different perspectives relative to a region of interest. One or more three-dimensional images may then be reconstructed from the fluoroscopic projection images. The three-dimensional images may then be displayed to provide anatomic context for the fluoroscopic application. A fluoroscopic projection image, such as the most current fluoroscopic image, may be superimposed on the three-dimensional image if desired.
摘要翻译：提供了一种用于从透视投影图像生成三维图像的技术。该技术允许相对于感兴趣的区域以不同的观点获取荧光透视图像。然后可以从透视投影图像重建一个或多个三维图像。然后可以显示三维图像以提供荧光镜应用的解剖背景。如果需要，诸如最新的透视图像的透视投影图像可以叠加在三维图像上。

5. 发明授权

US07792241B2 System and method of fast KVP switching for dual energy CT 有权
标题翻译：双能CT快速KVP开关系统及方法
公开(公告)号：US07792241B2
公开(公告)日：2010-09-07
申请号：US12257658
申请日：2008-10-24
申请人： Xiaoye Wu , David Langan , Colin R. Wilson , Yun Zou
发明人： Xiaoye Wu , David Langan , Colin R. Wilson , Yun Zou
IPC分类号： A61B6/00
CPC分类号： H01J35/06 , H01J35/045 , H01J2235/068
摘要： A CT system includes a rotatable gantry having an opening for receiving an object to be scanned and an x-ray source coupled to the gantry and configured to project x-rays through the opening. The x-ray source includes a target, a first cathode configured to emit a first beam of electrons toward the target, a first gridding electrode coupled to the first cathode, a second cathode configured to emit a second beam of electrons toward the target, and a second gridding electrode coupled to the second cathode. The system includes a generator configured to energize the first cathode to a first kVp and to energize the second cathode to a second kVp, and a detector attached to the gantry and positioned to receive x-rays that pass through the opening. The system also includes a controller configured to apply a gridding voltage to the first gridding electrode to block emission of the first beam of electrons toward the target, apply the gridding voltage to the second gridding electrode to block emission of the second beam of electrons toward the target, and acquire dual energy imaging data from the detector.
摘要翻译： CT系统包括可旋转机架，其具有用于接收待扫描物体的开口和耦合到台架的x射线源，并且被配置成通过开口投影X射线。 x射线源包括目标，被配置为朝向目标发射第一电子束的第一阴极，耦合到第一阴极的第一网格电极，被配置为向靶发射第二电子束的第二阴极，以及耦合到第二阴极的第二栅电极。该系统包括发电机，其被配置为将第一阴极激励到第一kVp并且将第二阴极激励到第二kVp，以及附接到台架并被定位成接收穿过开口的x射线的检测器。该系统还包括：控制器，被配置为向第一格栅电极施加网格化电压，以阻止第一电子束朝向目标的发射，将网格化电压施加到第二格栅电极，以阻止第二电子束朝向目标，并从检测器获取双能量成像数据。

6. 发明申请

US20050074158A1 Methods and apparatus for visualizing low contrast moveable objects 审中-公开
标题翻译：用于可视化低对比度可移动物体的方法和装置
公开(公告)号：US20050074158A1
公开(公告)日：2005-04-07
申请号：US10679850
申请日：2003-10-06
申请人： John Kaufhold , David Langan
发明人： John Kaufhold , David Langan
IPC分类号： G06K9/00 , G06K9/40 , G06T5/00 , G06T7/20
CPC分类号： G06T5/008 , G06T5/50 , G06T7/248 , G06T2207/10116 , G06T2207/20221 , G06T2207/30048 , G06T2207/30101 , G06T2207/30204
摘要： Some configurations of the present invention provide a method for locating a low contrast movable object coupled mechanically to a marker object in a series of image frames that include images of the low contrast object and the marker object. The method includes locating the marker object in a first selected frame of the series of image frames, selecting a patch of the first selected frame as a template of the marker object, and utilizing the template of the marker object to estimate a location of the marker object in a second selected frame of the series of image frames. The second selected frame is registered with the first selected frame utilizing the estimated location of the marker object in the second selected frame. The registered first selected frame and the second selected frame are fused to thereby enhance the contrast of the low contrast moveable object.
摘要翻译：本发明的一些配置提供了一种用于定位在包括低对比度对象和标记对象的图像的一系列图像帧中机械耦合到标记物体的低对比度可移动物体的方法。所述方法包括：将所述标记对象定位在所述一系列图像帧的第一选定帧中，选择所述第一选定帧的块作为所述标记对象的模板，以及利用所述标记对象的模板来估计所述标记的位置对象在该系列图像帧的第二选定帧中。利用第二选定帧中的标记对象的估计位置，将第二所选帧登记到第一所选帧。所登记的第一选择帧和第二选择帧被融合，从而增强低对比度可移动对象的对比度。

7. 发明申请

US20100104062A1 SYSTEM AND METHOD OF FAST KVP SWITCHING FOR DUAL ENERGY CT 有权
标题翻译：双能量CT快速KVP开关系统与方法
公开(公告)号：US20100104062A1
公开(公告)日：2010-04-29
申请号：US12257658
申请日：2008-10-24
申请人： Xiaoye Wu , David Langan , Colin R. Wilson , Yun Zou
发明人： Xiaoye Wu , David Langan , Colin R. Wilson , Yun Zou
IPC分类号： H05G1/56 , A61B6/00 , H01J35/06
CPC分类号： H01J35/06 , H01J35/045 , H01J2235/068
摘要： A CT system includes a rotatable gantry having an opening for receiving an object to be scanned and an x-ray source coupled to the gantry and configured to project x-rays through the opening. The x-ray source includes a target, a first cathode configured to emit a first beam of electrons toward the target, a first gridding electrode coupled to the first cathode, a second cathode configured to emit a second beam of electrons toward the target, and a second gridding electrode coupled to the second cathode. The system includes a generator configured to energize the first cathode to a first kVp and to energize the second cathode to a second kVp, and a detector attached to the gantry and positioned to receive x-rays that pass through the opening. The system also includes a controller configured to apply a gridding voltage to the first gridding electrode to block emission of the first beam of electrons toward the target, apply the gridding voltage to the second gridding electrode to block emission of the second beam of electrons toward the target, and acquire dual energy imaging data from the detector.
摘要翻译： CT系统包括可旋转机架，其具有用于接收待扫描物体的开口和耦合到台架的x射线源，并且被配置成通过开口投影X射线。 x射线源包括目标，被配置为朝向目标发射第一电子束的第一阴极，耦合到第一阴极的第一网格电极，被配置为向靶发射第二电子束的第二阴极，以及耦合到第二阴极的第二栅极电极。该系统包括发电机，其被配置为将第一阴极激励到第一kVp并且将第二阴极激励到第二kVp，以及附接到台架并被定位成接收穿过开口的x射线的检测器。该系统还包括：控制器，被配置为向第一格栅电极施加网格化电压，以阻止第一电子束朝向目标的发射，将网格化电压施加到第二格栅电极，以阻止第二电子束朝向目标，并从检测器获取双能量成像数据。

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