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公开(公告)号：US08861681B2
公开(公告)日：2014-10-14
申请号：US12972156
申请日：2010-12-17
CPC分类号： H02M7/10 , H02M3/337 , H02M2001/0058 , H05G1/10 , Y02B70/1433 , Y02B70/1491
摘要： Methods and systems for active resonant voltage switching are provided. One active resonant switching system includes a voltage switching system having one or more active resonant modules to provide a switching voltage output. Each of the resonant modules includes a plurality of switching devices configured to operate in open and closed states to produce first and second voltage level outputs from a voltage input. The resonant modules also include a capacitor connected to the switching devices and configured to receive a discharge energy during a resonant operating cycle when switching an output voltage from the first voltage level to the second voltage level, wherein the capacitor is further configured to restore system energy when switching from the second to first voltage level. The resonant modules further include a resonant inductor configured to transfer energy to and from the capacitor.
摘要翻译： 提供了主动谐振电压切换的方法和系统。 一个有源谐振开关系统包括具有一个或多个有源谐振模块以提供开关电压输出的电压切换系统。 每个谐振模块包括多个开关装置，其被配置为在打开和关闭状态下操作以从电压输入产生第一和第二电压电平输出。 谐振模块还包括连接到开关装置的电容器，并且被配置为在将输出电压从第一电压电平切换到第二电压电平时在谐振操作周期期间接收放电能量，其中电容器还被配置为恢复系统能量 当从第二电压电平切换到第一电压电平时。 谐振模块还包括被配置为将能量传递到电容器和从电容器传输能量的谐振电感器。
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公开(公告)号：US07742573B2
公开(公告)日：2010-06-22
申请号：US12253438
申请日：2008-10-17
摘要： A system is provided, which includes a rotatable gantry for receiving an object to be scanned. The system includes an x-ray source for projecting x-rays of two different energy levels towards the object and also a power supply, which energizes the x-ray source to two different voltage levels at a predetermined rate for generating x-rays at two different energy levels. The power supply in the system includes a fixed voltage source to input a voltage to a switching module with number of identical switching stages. Each stage in the switching module consists of a first switch, which charges a capacitor in a conducting state and output a first voltage, a second switch, which connects the fixed voltage source and the capacitor in series to output a second voltage in a conducting state and a diode which blocks a reverse current from the capacitor to the power supply.
摘要翻译： 提供了一种系统，其包括用于接收待扫描物体的可旋转机架。 该系统包括用于将两个不同能级的x射线投射到物体的X射线源，还有一个电源，其以预定的速率将X射线源激励到两个不同的电压电平，以在两个处产生x射线 不同的能量水平。 系统中的电源包括一个固定电压源，用于向具有相同开关级数的开关模块输入电压。 开关模块中的每个级包括一个第一开关，其对导通状态的电容器进行充电并输出第一电压，第二开关，其将固定电压源和电容器串联连接以输出导通状态的第二电压 以及阻挡从电容器到电源的反向电流的二极管。
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公开(公告)号：US08687768B2
公开(公告)日：2014-04-01
申请号：US12972231
申请日：2010-12-17
CPC分类号： H03K3/53 , H05G1/10 , Y10T307/872
摘要： Methods and systems for passive resonant voltage switching are provided. One passive resonant switching system includes a voltage switching system having one or more passive resonant modules to provide a switching voltage output. Each of the passive resonant modules include switching devices configured to operate in open and closed states to produce first and second voltage level outputs from a voltage input. The passive resonant modules also include a capacitor connected to the one or more switching devices and configured to receive a system discharge energy during a resonant operating cycle when switching an output voltage from the first voltage level to the second voltage level, and to be recharged when switching from the second to first voltage level. The passive resonant modules further include a resonant inductor and an additional switching device.
摘要翻译： 提供了无源谐振电压切换的方法和系统。 一个无源谐振开关系统包括具有一个或多个无源谐振模块以提供开关电压输出的电压开关系统。 无源谐振模块中的每一个包括被配置为在打开和关闭状态下操作以从电压输入产生第一和第二电压电平输出的开关装置。 无源谐振模块还包括连接到一个或多个开关装置的电容器，并且被配置为在将输出电压从第一电压电平切换到第二电压电平时在谐振操作周期期间接收系统放电能量，并且当 从第二电压电平切换到第一电压电平。 无源谐振模块还包括谐振电感器和附加的开关装置。
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公开(公告)号：US20120155614A1
公开(公告)日：2012-06-21
申请号：US12972231
申请日：2010-12-17
CPC分类号： H03K3/53 , H05G1/10 , Y10T307/872
摘要： Methods and systems for passive resonant voltage switching are provided. One passive resonant switching system includes a voltage switching system having one or more passive resonant modules to provide a switching voltage output. Each of the passive resonant modules include switching devices configured to operate in open and closed states to produce first and second voltage level outputs from a voltage input. The passive resonant modules also include a capacitor connected to the one or more switching devices and configured to receive a system discharge energy during a resonant operating cycle when switching an output voltage from the first voltage level to the second voltage level, and to be recharged when switching from the second to first voltage level. The passive resonant modules further include a resonant inductor and an additional switching device.
摘要翻译： 提供了无源谐振电压切换的方法和系统。 一个无源谐振开关系统包括具有一个或多个无源谐振模块以提供开关电压输出的电压开关系统。 无源谐振模块中的每一个包括被配置为在打开和关闭状态下操作以从电压输入产生第一和第二电压电平输出的开关装置。 无源谐振模块还包括连接到一个或多个开关装置的电容器，并且被配置为在将输出电压从第一电压电平切换到第二电压电平时在谐振操作周期期间接收系统放电能量，并且当 从第二电压到第一电压电平。 无源谐振模块还包括谐振电感器和附加的开关装置。
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公开(公告)号：US20120155613A1
公开(公告)日：2012-06-21
申请号：US12972156
申请日：2010-12-17
CPC分类号： H02M7/10 , H02M3/337 , H02M2001/0058 , H05G1/10 , Y02B70/1433 , Y02B70/1491
摘要： Methods and systems for active resonant voltage switching are provided. One active resonant switching system includes a voltage switching system having one or more active resonant modules to provide a switching voltage output. Each of the resonant modules includes a plurality of switching devices configured to operate in open and closed states to produce first and second voltage level outputs from a voltage input. The resonant modules also include a capacitor connected to the switching devices and configured to receive a discharge energy during a resonant operating cycle when switching an output voltage from the first voltage level to the second voltage level, wherein the capacitor is further configured to restore system energy when switching from the second to first voltage level. The resonant modules further include a resonant inductor configured to transfer energy to and from the capacitor.
摘要翻译： 提供了主动谐振电压切换的方法和系统。 一个有源谐振开关系统包括具有一个或多个有源谐振模块以提供开关电压输出的电压切换系统。 每个谐振模块包括多个开关装置，其被配置为在打开和关闭状态下操作以从电压输入产生第一和第二电压电平输出。 谐振模块还包括连接到开关装置的电容器，并且被配置为在将输出电压从第一电压电平切换到第二电压电平时在谐振操作周期期间接收放电能量，其中电容器还被配置为恢复系统能量 当从第二电压电平切换到第一电压电平时。 谐振模块还包括被配置为将能量传递到电容器和从电容器传输能量的谐振电感器。
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公开(公告)号：US20100098217A1
公开(公告)日：2010-04-22
申请号：US12253438
申请日：2008-10-17
IPC分类号： H05G1/32
摘要： A system is provided, which includes a rotatable gantry for receiving an object to be scanned. The system includes an x-ray source for projecting x-rays of two different energy levels towards the object and also a power supply, which energizes the x-ray source to two different voltage levels at a predetermined rate for generating x-rays at two different energy levels. The power supply in the system includes a fixed voltage source to input a voltage to a switching module with number of identical switching stages. Each stage in the switching module consists of a first switch, which charges a capacitor in a conducting state and output a first voltage, a second switch, which connects the fixed voltage source and the capacitor in series to output a second voltage in a conducting state and a diode which blocks a reverse current from the capacitor to the power supply.
摘要翻译： 提供了一种系统，其包括用于接收待扫描物体的可旋转机架。 该系统包括用于将两个不同能级的x射线投射到物体的X射线源，还有一个电源，其以预定的速率将X射线源激励到两个不同的电压电平，以在两个处产生x射线 不同的能量水平。 系统中的电源包括一个固定电压源，用于向具有相同开关级数的开关模块输入电压。 开关模块中的每个级包括一个第一开关，其对导通状态的电容器进行充电并输出第一电压，第二开关，其将固定电压源和电容器串联连接以输出导通状态的第二电压 以及阻挡从电容器到电源的反向电流的二极管。
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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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公开(公告)号：US07492855B2
公开(公告)日：2009-02-17
申请号：US10743195
申请日：2003-12-22
申请人： Forrest Frank Hopkins , Peter Michael Edic , Samit Kumar Basu , Bruno De Man , James Walter Leblanc , Xiaoye Wu , Deborah Joy Walter , William Robert Ross , Colin Richard Wilson , Ricardo Scott Avila , Robert August Kaucic, Jr.
发明人： Forrest Frank Hopkins , Peter Michael Edic , Samit Kumar Basu , Bruno De Man , James Walter Leblanc , Xiaoye Wu , Deborah Joy Walter , William Robert Ross , Colin Richard Wilson , Ricardo Scott Avila , Robert August Kaucic, Jr.
IPC分类号： G01N23/04
CPC分类号： G01V5/0016 , A61B6/4035 , A61B6/4241 , A61B6/482 , G01V5/0041 , G01V5/005 , G06F19/00
摘要： A system and method for ascertaining the identity of an object within an enclosed article. The system includes an acquisition subsystem utilizing a stationary radiation source and detector, a reconstruction subsystem, a computer-aided detection (CAD) subsystem, and a 2D/3D visualization subsystem. The detector may be an energy discriminating detector. The acquisition subsystem communicates view data to the reconstruction subsystem, which reconstructs it into image data and communicates it to the CAD subsystem. The CAD subsystem analyzes the image data to ascertain whether it contains any area of interest. Any such area of interest data is sent to the reconstruction subsystem for further reconstruction, using more rigorous algorithms and further analyzed by the CAD subsystem. Other information, such as risk variables or trace chemical detection information may be communicated to the CAD subsystem to be included in its analysis.
摘要翻译： 用于确定封闭物品内物体的身份的系统和方法。 该系统包括利用固定辐射源和检测器，重建子系统，计算机辅助检测（CAD）子系统和2D / 3D可视化子系统的采集子系统。 检测器可以是能量识别检测器。 采集子系统将视图数据传送到重建子系统，将其重建为图像数据并将其传送到CAD子系统。 CAD子系统分析图像数据，以确定它是否包含任何感兴趣的区域。 任何这样的感兴趣的数据区域被发送到重建子系统以进一步重建，使用更严格的算法并由CAD子系统进一步分析。 其他信息，例如风险变量或痕量化学检测信息可以传达给CAD子系统以包含在其分析中。
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9.发明授权Method for energy sensitive computed tomography using checkerboard filtering 有权使用棋盘过滤的能量敏感计算机断层扫描方法公开(公告)号：US08111803B2
公开(公告)日：2012-02-07
申请号：US12432225
申请日：2009-04-29
IPC分类号： G01N23/087 , G21K5/10 , H05G1/64
CPC分类号： G21K1/10 , A61B6/032 , A61B6/4035 , A61B6/482 , G01N2223/419 , G01N2223/423
摘要： Methods for energy-sensitive computed tomography systems that use checkerboard filtering. A method of enhancing image analysis of projection data acquired using a detector configured with a checkerboard filter includes disposing in a system a detector to receive a transmitted beam of X-rays traversing through an object, where the system is configured so the detector receives both high- and one of total- and low-energy projection data; receiving the high- and one of total- and low-energy projection data at the detector; and then estimating an effective atomic number of the object and/or processing the projection data so as to mitigate reconstruction artifacts. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appended claims.
摘要翻译： 使用棋盘过滤的能量敏感计算机断层摄影系统的方法。 使用配置有棋盘滤波器的检测器获取的投影数据的图像分析增强方法包括在系统中设置检测器以接收穿过物体的X射线的透射束，其中系统配置为使得检测器接收高 - 和总能量和低能量投影数据之一; 在检测器处接收高能量投影数据和低能量投影数据之一; 然后估计对象的有效原子数和/或处理投影数据，以便减轻重建伪像。 已经根据具体实施例描述了本发明，并且认识到除了明确说明的那些之外的等同物，替代物和修改是可能的并且在所附权利要求的范围内。
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公开(公告)号：US20110142201A1
公开(公告)日：2011-06-16
申请号：US12638471
申请日：2009-12-15
申请人： Jeffrey Wayne Eberhard , Bernhard Erich Hermann Claus , Colin Richard Wilson , Kedar Bhalchandra Khare
发明人： Jeffrey Wayne Eberhard , Bernhard Erich Hermann Claus , Colin Richard Wilson , Kedar Bhalchandra Khare
IPC分类号： G01N23/04
CPC分类号： G01V5/0008
摘要： A multi-view imaging system and method is disclosed. The system comprises: multiple X-ray sources emitting X-rays in a fan-shaped beam each having a first and a second beam edge defining a fan beam angle located in a predetermined configuration around an imaging volume; a system controller configured to operate the X-ray sources; detectors, to detect X-rays and configured to generate signals in response to the detected X-rays, wherein each of the plurality of X-ray sources are configured to emit X-rays to one or more detectors, further wherein the X-ray source and two end points of a corresponding detector define a fan beam plane, further wherein a line extending from the X-ray source within the fan beam plane and through the imaging volume defines a projection direction, wherein adjacent projection directions define an angular spacing; an object conveyance device configured for transporting an object along a path of travel through the imaging volume between the X-ray sources and the detectors; and a detector interface configured to acquire the signals from the detectors, wherein the predetermined configuration is defined wherein either: the projection directions when viewed along a longitudinal axis of the image system surround the imaging volume by an angular range of about 180 degrees; or the projection directions when viewed along a longitudinal axis of the image system surround the imaging volume by an angular range of about 180°−180/Q, wherein Q is a quantity of the projection directions.
摘要翻译： 公开了一种多视点成像系统和方法。 该系统包括：多个X射线源在扇形光束中发射X射线，每个X射线源具有限定围绕成像体积的预定构型的扇形束角度的第一和第二光束边缘; 被配置为操作所述X射线源的系统控制器; 检测器，用于检测X射线并被配置为响应于检测到的X射线产生信号，其中多个X射线源中的每一个被配置为向一个或多个检测器发射X射线，其中X射线 相应检测器的源极和两个端点限定了扇形光束平面，其中，从扇形光束平面内的X射线源延伸并穿过成像体积的线限定了投射方向，其中相邻的投射方向限定角度间隔; 物体输送装置，被配置为沿着X射线源和检测器之间的成像体积沿行进路径传送物体; 以及检测器接口，被配置为从所述检测器获取信号，其中限定所述预定配置，其中：沿着所述图像系统的纵轴观察的投影方向围绕所述成像体积约180度的角度范围; 或者沿着图像系统的纵轴观察时的投影方向围绕成像体积约180°-180 / Q的角度范围，其中Q是投影方向的量。
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