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51.发明授权Acquisition and reconstruction of projection data using a stationary CT geometry 有权使用固定CT几何获取和重建投影数据公开(公告)号：US07706499B2
公开(公告)日：2010-04-27
申请号：US11725892
申请日：2007-03-20
IPC分类号： H05G1/60
CPC分类号： G01T1/2985 , A61B6/027
摘要： Systems and methods are provided for acquiring and reconstructing projection data using a computed tomography (CT) system having stationary distributed X-ray sources and detector arrays. In one embodiment, a non-sequential activation of X-ray source locations on an annular source is employed to acquire projection data. In another embodiment, a distributed source is tilted relative to an axis of the scanner to acquire the projection data. In a further embodiment, a plurality of X-ray source locations on an annular source are activated such that the aggregated signals correspond to two or more sets of spatially interleaved helical scan data.
摘要翻译： 提供了使用具有固定分布式X射线源和检测器阵列的计算机断层摄影（CT）系统来获取和重建投影数据的系统和方法。 在一个实施例中，使用在环形源上的X射线源位置的非顺序激活来获取投影数据。 在另一个实施例中，分布式源相对于扫描器的轴线倾斜以获取投影数据。 在另一实施例中，环形源上的多个X射线源位置被激活，使得聚集的信号对应于两组或多组空间交错的螺旋扫描数据。
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52.发明授权Methods and apparatus for detecting structural, perfusion, and functional abnormalities 有权用于检测结构，灌注和功能异常的方法和装置公开(公告)号：US07627078B2
公开(公告)日：2009-12-01
申请号：US10065689
申请日：2002-11-08
IPC分类号： G01N23/00
CPC分类号： A61B6/507 , A61B6/032 , A61B6/4035 , A61B6/405 , A61B6/4241 , A61B6/481 , A61B6/482 , G06F19/00 , Y10S378/901
摘要： A Multi-Energy Computed Tomography (MECT) System is provided. The system includes a radiation source rotatable about a patient, a radiation detector, and a computer coupled to the radiation source and the radiation detector wherein the computer is configured to receive data regarding a first energy spectrum of a scan of a head of the patient, receive data regarding a second energy spectrum of a scan of the head, and generate an image using the received data.
摘要翻译： 提供多能计算层析成像（MECT）系统。 该系统包括可围绕患者旋转的辐射源，辐射检测器和耦合到辐射源和辐射检测器的计算机，其中计算机被配置为接收关于患者头部的扫描的第一能量谱的数据， 接收关于头部扫描的第二能量谱的数据，并使用接收的数据生成图像。
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53.发明授权Method and apparatus of CT cardiac diagnostic imaging using motion a priori information from 3D ultrasound and ECG gating 有权CT心脏诊断成像的方法和装置，使用3D超声和ECG门控的先验信息公开(公告)号：US07415093B2
公开(公告)日：2008-08-19
申请号：US11554519
申请日：2006-10-30
IPC分类号： A61B6/00
摘要： ECG and ultrasound data of the heart are acquired in real-time during a scan. A data acquisition module is controlled during the scan to prospectively gate acquisition of CT data as a function of the real-time ECG data and the real-time ultrasound data. An image is reconstructed from the acquired CT data.
摘要翻译： 在扫描期间实时获取心脏的ECG和超声数据。 在扫描期间控制数据采集模块，以便根据实时ECG数据和实时超声数据对CT数据进行前瞻性门控获取。 从所获取的CT数据重建图像。
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54.发明申请METHOD AND APPARATUS OF CT CARDIAC DIAGNOSTIC IMAGING USING A PRIORI MOTION INFORMATION FROM 3D ULTRASOUND AND ECG GATING 审中-公开使用3D超声和心电图评估的原始运动信息的CT心脏诊断成像的方法和装置公开(公告)号：US20080170654A1
公开(公告)日：2008-07-17
申请号：US11623293
申请日：2007-01-15
IPC分类号： A61B6/00
CPC分类号： A61B6/503 , A61B6/032 , A61B6/4417 , A61B6/5247 , A61B6/541 , A61B8/08 , A61B8/0883 , A61B8/4416
摘要： ECG and ultrasound data of the heart are received in real-time during a scan. CT projection data is also acquired and an image is reconstructed based on the CT projection data, ECG data, and ultrasound data.
摘要翻译： 在扫描期间实时接收心脏的ECG和超声数据。 CT投影数据也被获取，并且基于CT投影数据，ECG数据和超声数据重建图像。
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公开(公告)号：US07396162B1
公开(公告)日：2008-07-08
申请号：US11731357
申请日：2007-03-30
IPC分类号： G01D18/00
CPC分类号： A61B6/5282 , A61B6/4291 , G01T1/1647 , G01T1/2985
摘要： A method, system, and machine readable media are provided for correcting scatter in an image. The method comprises sequentially emitting radiation from a subset of radiation sources toward a detector array and measuring radiation on areas of the detector array not exposed to the emitted primary radiation at the time of measurement. Scatter is estimated from the measured radiation. Furthermore, the scatter estimates are subtracted from the measured data and images with improved image quality are reconstructed.
摘要翻译： 提供了一种用于校正图像中的散射的方法，系统和机器可读介质。 该方法包括从辐射源的子集向检测器阵列顺序地发射辐射，并且在测量时测量不暴露于所发射的主辐射的检测器阵列的区域上的辐射。 从测量的辐射估计散射。 此外，从测量数据中减去散射估计值，并重建具有改善图像质量的图像。
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公开(公告)号：US07376255B2
公开(公告)日：2008-05-20
申请号：US10874976
申请日：2004-06-23
CPC分类号： G06T11/005 , G06T2211/416 , G06T2211/421 , Y10S378/901
摘要： A method for reconstructing image data acquired by a computed tomography system is provided. The method comprises selecting a portion of image data to be reconstructed and determining a corresponding portion of projection data. An adaptive filter is computed and applied to the portion of projection data to generate a portion of adaptively-filtered projection data. The adaptive filter is computed based upon desired quality properties of the portion of image data. Finally, the portion of image data is reconstructed based upon the portion of adaptively-filtered projection data. The step of selecting, computing and reconstructing is repeated for every pixel or group of pixels comprising the image data.
摘要翻译： 提供了一种重建由计算机断层摄影系统获取的图像数据的方法。 该方法包括选择要重建的图像数据的一部分并确定投影数据的对应部分。 计算自适应滤波器并将其应用于投影数据的一部分以生成自适应滤波投影数据的一部分。 基于图像数据部分的期望质量特性来计算自适应滤波器。 最后，基于自适应滤波投影数据的部分重建图像数据的部分。 对于包括图像数据的每个像素或像素组重复选择，计算和重建的步骤。
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公开(公告)号：US07366279B2
公开(公告)日：2008-04-29
申请号：US10903298
申请日：2004-07-29
申请人： Peter Michael Edic , Bruno Kristiaan Bernard De Man , Mark Ernest Vermilyea , Christopher David Unger , John Eric Tkaczyk , James Walter LeBlanc , Samit Kumar Basu , William Robert Ross , Jonathan David Short , Scott Stephen Zelakiewicz
发明人： Peter Michael Edic , Bruno Kristiaan Bernard De Man , Mark Ernest Vermilyea , Christopher David Unger , John Eric Tkaczyk , James Walter LeBlanc , Samit Kumar Basu , William Robert Ross , Jonathan David Short , Scott Stephen Zelakiewicz
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/4014 , A61B6/4028 , A61B6/4291 , A61B6/5282 , G21K1/025
摘要： Various configurations for scatter reduction and control are provided for CT imaging. These configurations include an imaging system having a stationary detector extending generally around a portion of an imaging volume and a distributed X-ray source placed proximal to the stationary detector for radiating an X-ray beam toward the stationary detector. A scatter control system is further provided that is configured to adaptively operate in cooperation with the stationary detector and the distributed X-ray source to focally align collimator septa contained therein to the X-ray beam at a given focal point and to provide X-ray beam scatter control.
摘要翻译： 为CT成像提供了用于散射减少和控制的各种配置。 这些配置包括成像系统，其具有大致围绕成像体积的一部分延伸的固定检测器，以及放置在固定检测器附近的分布式X射线源，用于向固定检测器辐射X射线束。 还提供了一种散射控制系统，其被配置为与固定式检测器和分布式X射线源协作自适应地操作，以将给定焦点上的准直器隔片聚焦到X射线束，并提供X射线 光束散射控制。
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公开(公告)号：US07333648B2
公开(公告)日：2008-02-19
申请号：US10862101
申请日：2004-06-04
CPC分类号： G06T7/0012 , A61B6/508 , A61B6/541 , G06T7/62 , G06T2207/10081 , G06T2207/30101
摘要： Techniques, hardware, and software are provided for quantification of extensional features of structures of an imaged subject from image data representing a two-dimensional or three-dimensional image. In one embodiment, stenosis in a blood vessel may be quantified from volumetric image data of the blood vessel. A profile from a selected family of profiles is fit to selected image data. An estimate of cross sectional area of the blood vessel is generated based on the fit profile. Area values may be generated along a longitudinal axis of the vessel, and a one-dimensional profile fit to the generated area values. An objective quantification of stenosis in the vessel may be obtained from the area profile. In some cases, volumetric image data representing the imaged structure may be reformatted to facilitate the quantification, when the structural feature varies along a curvilinear axis. A mask is generated for the structural feature to be quantified based on the volumetric image data. A curve representing the curvilinear axis is determined from the mask by center-finding computations, such as moment calculations, and curve fitting. Image data are generated for oblique cuts at corresponding selected orientations with respect to the curvilinear axis, based on the curve and the volumetric image data. The oblique cuts may be used for suitable further processing, such as image display or quantification.
摘要翻译： 提供了技术，硬件和软件，用于从表示二维或三维图像的图像数据中量化成像对象的结构的延伸特征。 在一个实施例中，可以从血管的体积图像数据量化血管中的狭窄。 所选择的配置文件系列的配置文件适合所选的图像数据。 基于拟合曲线产生血管横截面面积的估计。 面积值可以沿着容器的纵向轴线产生，并且一维轮廓拟合到所产生的面积值。 可以从区域剖面中获得容器中狭窄的客观量化。 在一些情况下，当结构特征沿着曲线轴线变化时，表示成像结构的体积图像数据可以重新格式化以便于定量。 基于体积图像数据生成要量化的结构特征的掩模。 表示曲线轴的曲线通过中心位置计算（如力矩计算）和曲线拟合从掩模确定。 基于曲线和体积图像数据，生成针对相对于曲线轴的相应选定取向的倾斜切割的图像数据。 倾斜切口可以用于适当的进一步处理，例如图像显示或定量。
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59.发明授权公开(公告)号：US07333587B2
公开(公告)日：2008-02-19
申请号：US10789539
申请日：2004-02-27
申请人： Bruno De Man , Peter Michael Edic , Samit Basu
发明人： Bruno De Man , Peter Michael Edic , Samit Basu
IPC分类号： G01N23/00
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4028 , A61B6/4085
摘要： A technique is provided for imaging a field of view using an X-ray source comprising two or more emission points. Each emission point is configured to emit a fan of radiation encompassing less than the entire field of view. The emission points are activated individually and rotate about the field of view, allowing respective streams of radiation to be emitted at various view angles about the field of view. The emission points, which may correspond to different radial regions of the field of view, may be differentially activated to emphasize a region of interest within the field of view. The multiple emission points may be extrapolated along the longitudinal axis in duplicate or offset configurations.
摘要翻译： 提供了一种使用包括两个或更多个发射点的X射线源对视场成像的技术。 每个发射点被配置为发射包含小于整个视场的辐射风扇。 发射点被单独激活并围绕视场旋转，允许相应的辐射流以关于视场的各种视角发射。 可以对应于视场的不同径向区域的发射点可以被差异地激活以强调视野范围内的感兴趣区域。 多个发射点可以沿纵向轴线重复或偏移配置外推。
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公开(公告)号：US07218700B2
公开(公告)日：2007-05-15
申请号：US11048158
申请日：2005-02-01
申请人： William Hullinger Huber , Colin Richard Wilson , John Scott Price , Peter Michael Edic , Mark Ernest Vermilyea
发明人： William Hullinger Huber , Colin Richard Wilson , John Scott Price , Peter Michael Edic , Mark Ernest Vermilyea
IPC分类号： A61B6/00
CPC分类号： H01J35/06 , H01J35/14 , H01J35/16 , H01J35/30 , H01J2235/068
摘要： A system and method for forming x-rays. One exemplary system includes a target and electron emission subsystem with a plurality of electron sources. Each of the plurality of electron sources is configured to generate a plurality of discrete spots on the target from which x-rays are emitted. Another exemplary system includes a target, an electron emission subsystem with a plurality of electron sources, each of which generates at least one of the plurality of spots on the target, and a transient beam protection subsystem for protecting the electron emission subsystem from transient beam currents, material emissions from the target, and electric field transients.
摘要翻译： 一种用于形成x射线的系统和方法。 一个示例性系统包括具有多个电子源的靶和电子发射子系统。 多个电子源中的每一个被配置为在从其发射X射线的目标上产生多个离散点。 另一个示例性系统包括目标，具有多个电子源的电子发射子系统，每个电子源产生目标上的多个点中的至少一个，以及用于保护电子发射子系统免受瞬态束电流的瞬态波束保护子系统 ，目标物质排放和电场瞬变。
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