System and method for detecting an object
    81.
    发明申请
    System and method for detecting an object 有权
    用于检测物体的系统和方法

    公开(公告)号:US20050031075A1

    公开(公告)日:2005-02-10

    申请号:US10743195

    申请日:2003-12-22

    IPC分类号: G01V5/00 G01N23/04

    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。

    Method and system for scatter correction in X-ray imaging
    83.
    发明授权
    Method and system for scatter correction in X-ray imaging 有权
    X射线成像中散射校正的方法和系统

    公开(公告)号:US08483471B2

    公开(公告)日:2013-07-09

    申请号:US13174480

    申请日:2011-06-30

    IPC分类号: G06K9/00

    摘要: Approaches for deriving scatter information using inverse tracking of scattered X-rays is disclosed. In certain embodiments scattered rays are tracked from respective locations on a detector to a source of the X-ray radiation, as opposed to tracking schemes that proceed from the source to the detector. In one such approach, the inverse tracking is implemented using a density integrated volume that reduces the integration steps performed.

    摘要翻译: 公开了使用散射X射线的反向跟踪导出散射信息的方法。 在某些实施例中,与从源到检测器进行的跟踪方案相反,散射光线从检测器上的相应位置跟踪到X射线辐射源。 在一种这样的方法中,使用密度集成体积来实现逆追踪,其减少执行的集成步骤。

    Forward projection for the generation of computed tomography images at arbitrary spectra
    84.
    发明授权
    Forward projection for the generation of computed tomography images at arbitrary spectra 有权
    用于在任意光谱产生计算机断层摄影图像的前向投影

    公开(公告)号:US08260023B2

    公开(公告)日:2012-09-04

    申请号:US12324008

    申请日:2008-11-26

    IPC分类号: G06K9/00

    摘要: The present technology relates to the generation of a CT image under an arbitrary energy spectrum based on the results of a dual energy scan. In certain embodiments, a dual energy scan is conducted of an object and material basis decomposition is used to decompose the scanned object into two basis materials with known attenuation properties resulting in material density images. Along with knowledge of other imaging system information, forward projection is done under an arbitrary kV spectrum to generate an image as if the scanned object was scanned under this different kV spectrum. This prevents users from conducting unnecessary additional scans.

    摘要翻译: 本技术涉及基于双能量扫描的结果在任意能谱下产生CT图像。 在某些实施例中,对物体进行双能量扫描,并且材料基础使用分解来将被扫描的物体分解成具有已知衰减特性的两种基础材料,从而产生材料密度图像。 随着对其他​​成像系统信息的了解,在任意的kV光谱下进行前向投影以产生像在该不同的kV光谱下扫描的物体一样的图像。 这样可以防止用户进行不必要的附加扫描。

    ANODE TARGET FOR AN X-RAY TUBE AND METHOD FOR CONTROLLING THE X-RAY TUBE
    85.
    发明申请
    ANODE TARGET FOR AN X-RAY TUBE AND METHOD FOR CONTROLLING THE X-RAY TUBE 有权
    用于X射线管的阳极靶和用于控制X射线管的方法

    公开(公告)号:US20120163530A1

    公开(公告)日:2012-06-28

    申请号:US12976950

    申请日:2010-12-22

    IPC分类号: A61B6/03 H01J35/00 H01J35/30

    摘要: Anode targets for an x-ray tube and methods for controlling x-ray tubes for x-ray systems are provided. One x-ray system includes a field-generator configured to generate a field, an electron beam generator configured to generate an electron beam directed towards a target and a voltage controller configured to control the electron beam generator to produce an electron beam at a first energy level and an electron beam at a second energy level. The x-ray system also includes a field-generator controller configured to control a field to deflect at least one of the electron beams, wherein the electron beam, at the first energy level, impinges on the target at a first contact position and the electron beam, at the second energy level, impinges on the target at a second contact position. The at the first contact position and at the second contact position is configured to filter x-rays.

    摘要翻译: 阳极靶向X射线管,并提供了用于控制x射线系统的X射线管的方法。 一个x射线系统包括被配置为产生场的场发生器,被配置为产生朝向目标的电子束的电子束发生器和被配置为控制电子束发生器以产生第一能量的电子束的电压控制器 电平和电子束处于第二能级。 x射线系统还包括场发生器控制器,其被配置为控制场以偏转至少一个电子束,其中在第一能级处的电子束在第一接触位置撞击靶,并且电子 在第二能量水平处的光束在第二接触位置处撞击在目标上。 在第一接触位置处和在第二接触位置处被配置为过滤x射线。

    System and method of acquiring multi-energy CT imaging data
    86.
    发明授权
    System and method of acquiring multi-energy CT imaging data 有权
    获取多能CT成像数据的系统和方法

    公开(公告)号:US08199875B2

    公开(公告)日:2012-06-12

    申请号:US12760862

    申请日:2010-04-15

    IPC分类号: A61B6/00

    摘要: A CT system includes a rotatable gantry having an opening for receiving an object to be scanned, and a controller configured to apply a first kVp for a first time period, apply a second kVp for a second time period, wherein the second time period is different from the first time period, acquire a first asymmetric view dataset during at least a portion of the first time period, acquire a second asymmetric view dataset during at least a portion of the second time period, and generate an image using the acquired first and second asymmetric view datasets.

    摘要翻译: CT系统包括具有用于接收待扫描物体的开口的可旋转机架,以及被配置为在第一时间段施加第一kVp的控制器,在第二时间段施加第二kVp,其中第二时间段是不同的 从所述第一时间段在所述第一时间段的至少一部分期间获取第一非对称视图数据集,在所述第二时间段的至少一部分期间获取第二非对称视图数据集,并且使用所获取的第一和第二时间段生成图像 非对称视图数据集。

    Asymmetric de-populated detector for computed tomography and method of making same
    87.
    发明授权
    Asymmetric de-populated detector for computed tomography and method of making same 有权
    用于计算机断层扫描的不对称解除检测器及其制造方法

    公开(公告)号:US08155265B2

    公开(公告)日:2012-04-10

    申请号:US12837035

    申请日:2010-07-15

    IPC分类号: A61B6/03

    摘要: A computed tomography (CT) detector array includes a central region substantially symmetric about a central axis thereof and includes a first plurality of x-ray detector cells configured to acquire CT data from a first number of detector rows during a scan, wherein the central axis is in a channel direction of the CT detector array and transverse to a slice direction of the CT detector array. A first wing is coupled to a first side of the central region, and a second wing is coupled to a second side of the central region opposite the first side. The first and second wings include respective second and third pluralities of x-ray detector cells and are each configured to acquire CT data from a number of detector rows that is less than the first number of detector rows. The CT detector array is asymmetric about the central axis of the central region.

    摘要翻译: 计算机断层摄影(CT)检测器阵列包括围绕其中心轴基本对称的中心区域,并且包括第一多个x射线检测器单元,其被配置为在扫描期间从第一数量的检测器行获取CT数据,其中中心轴 在CT检测器阵列的通道方向上并且横向于CT检测器阵列的切片方向。 第一翼连接到中心区域的第一侧,第二翼连接到与第一侧相对的中心区域的第二侧。 第一和第二翼包括相应的第二和第三多个X射线检测器单元,并且各自被配置为从小于第一数量的检测器行的多个检测器行获取CT数据。 CT检测器阵列关于中心区域的中心轴线是不对称的。

    ASYMMETRIC DE-POPULATED DETECTOR FOR COMPUTED TOMOGRAPHY AND METHOD OF MAKING SAME
    88.
    发明申请
    ASYMMETRIC DE-POPULATED DETECTOR FOR COMPUTED TOMOGRAPHY AND METHOD OF MAKING SAME 有权
    用于计算机图像的不对称去除检测器及其制造方法

    公开(公告)号:US20120014502A1

    公开(公告)日:2012-01-19

    申请号:US12837035

    申请日:2010-07-15

    IPC分类号: A61B6/03 H05K13/00

    摘要: A computed tomography (CT) detector array includes a central region substantially symmetric about a central axis thereof and includes a first plurality of x-ray detector cells configured to acquire CT data from a first number of detector rows during a scan, wherein the central axis is in a channel direction of the CT detector array and transverse to a slice direction of the CT detector array. A first wing is coupled to a first side of the central region, and a second wing is coupled to a second side of the central region opposite the first side. The first and second wings include respective second and third pluralities of x-ray detector cells and are each configured to acquire CT data from a number of detector rows that is less than the first number of detector rows. The CT detector array is asymmetric about the central axis of the central region.

    摘要翻译: 计算机断层摄影(CT)检测器阵列包括围绕其中心轴基本对称的中心区域,并且包括第一多个x射线检测器单元,其被配置为在扫描期间从第一数量的检测器行获取CT数据,其中中心轴 在CT检测器阵列的通道方向上并且横向于CT检测器阵列的切片方向。 第一翼连接到中心区域的第一侧,第二翼连接到与第一侧相对的中心区域的第二侧。 第一和第二翼包括相应的第二和第三多个X射线检测器单元,并且各自被配置为从小于第一数量的检测器行的多个检测器行获取CT数据。 CT检测器阵列关于中心区域的中心轴线是不对称的。

    System and method for generating computed tomography images
    90.
    发明授权
    System and method for generating computed tomography images 有权
    用于生成计算机断层摄影图像的系统和方法

    公开(公告)号:US07929659B2

    公开(公告)日:2011-04-19

    申请号:US12179298

    申请日:2008-07-24

    IPC分类号: A61B6/03

    摘要: A computed tomographic imaging system is provided for generating computed tomography images. The computed tomographic system includes a processor configured to access image data encoding X-ray projections at a detector position and a plurality of X-ray source beam focal spot positions and to align pixel values for the projections in a direction of deviation of the positions. The processor is also configured to determine a correction factor for at least one of the projections based upon the aligned pixel values and upon a sum of the projections and to correct the pixel values for the at least one of the projections based upon the correction factor.

    摘要翻译: 提供计算机断层摄影系统用于生成计算机断层摄影图像。 计算机断层摄影系统包括处理器,其被配置为访问在检测器位置处编码X射线投影的图像数据和多个X射线源束焦点位置,并且在位置的偏离方向上对准投影的像素值。 处理器还被配置为基于对准的像素值和投影的总和来确定至少一个投影的校正因子,并且基于校正因子来校正至少一个投影的像素值。