METHOD AND SYSTEM FOR SCATTER CORRECTION IN X-RAY IMAGING
    1.
    发明申请
    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:US20130004050A1

    公开(公告)日:2013-01-03

    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。

    Method and system for scatter correction in X-ray imaging
    2.
    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。

    Method of dose reduction for CT imaging and apparatus for implementing same
    3.
    发明授权
    Method of dose reduction for CT imaging and apparatus for implementing same 有权
    CT成像剂量减少方法及其实施方法

    公开(公告)号:US08942341B2

    公开(公告)日:2015-01-27

    申请号:US13223665

    申请日:2011-09-01

    摘要: A CT system includes an x-ray source configured to project an x-ray beam toward an object, a detector array, and a bowtie filter. The bowtie filter includes a first x-ray filtration region positioned to attenuate x-rays that pass through an isochannel of the detector array, a second x-ray filtration region positioned to attenuate x-rays that pass through channels of the detector array that are offcenter in a channel direction from the isochannel, and an x-ray attenuation material positionable to attenuate the x-rays that pass through the channels of the detector array that are offcenter in the channel direction from the isochannel. The CT system also includes a data acquisition system (DAS) connected to the detector array and configured to receive outputs from the detector array, and a computer programmed to acquire projections of imaging data of the object, and generate an image of the object using the imaging data.

    摘要翻译: CT系统包括被配置为将X射线束投影到物体的X射线源,检测器阵列和bowtie滤波器。 弓形过滤器包括第一x射线过滤区域,其定位成衰减穿过检测器阵列的等通道的x射线;第二x射线过滤区域,其被定位成衰减穿过检测器阵列的通道的x射线, 离子中心在来自等信道的通道方向上,以及x射线衰减材料,其可定位成衰减穿过检测器阵列的通道的X射线,所述X射线在通道方向上偏离同步通道。 CT系统还包括连接到检测器阵列并被配置为接收来自检测器阵列的输出的数据采集系统(DAS),以及被编程为获取对象的成像数据的投影的计算机,并且使用 成像数据。

    METHOD OF DOSE REDUCTION FOR CT IMAGING AND APPARATUS FOR IMPLEMENTING SAME
    4.
    发明申请
    METHOD OF DOSE REDUCTION FOR CT IMAGING AND APPARATUS FOR IMPLEMENTING SAME 有权
    用于CT成像的剂量减少方法和用于实施其的装置

    公开(公告)号:US20130058451A1

    公开(公告)日:2013-03-07

    申请号:US13223665

    申请日:2011-09-01

    IPC分类号: A61B6/03

    摘要: A CT system includes an x-ray source configured to project an x-ray beam toward an object, a detector array, and a bowtie filter. The bowtie filter includes a first x-ray filtration region positioned to attenuate x-rays that pass through an isochannel of the detector array, a second x-ray filtration region positioned to attenuate x-rays that pass through channels of the detector array that are offcenter in a channel direction from the isochannel, and an x-ray attenuation material positionable to attenuate the x-rays that pass through the channels of the detector array that are offcenter in the channel direction from the isochannel. The CT system also includes a data acquisition system (DAS) connected to the detector array and configured to receive outputs from the detector array, and a computer programmed to acquire projections of imaging data of the object, and generate an image of the object using the imaging data.

    摘要翻译: CT系统包括被配置为将X射线束投影到物体的X射线源,检测器阵列和bowtie滤波器。 弓形过滤器包括第一x射线过滤区域,其定位成衰减穿过检测器阵列的等通道的x射线;第二x射线过滤区域,其被定位成衰减穿过检测器阵列的通道的x射线, 离子中心在来自等信道的通道方向上,以及x射线衰减材料,其可定位成衰减穿过检测器阵列的通道的X射线,所述X射线在通道方向上偏离同步通道。 CT系统还包括连接到检测器阵列并被配置为接收来自检测器阵列的输出的数据采集系统(DAS),以及被编程为获取对象的成像数据的投影的计算机,并且使用 成像数据。

    DE-POPULATED DETECTOR FOR COMPUTED TOMOGRAPHY AND METHOD OF MAKING SAME
    5.
    发明申请
    DE-POPULATED DETECTOR FOR COMPUTED TOMOGRAPHY AND METHOD OF MAKING SAME 审中-公开
    用于计算机图像的人口检测器及其制造方法

    公开(公告)号:US20110211667A1

    公开(公告)日:2011-09-01

    申请号:US12714168

    申请日:2010-02-26

    IPC分类号: H05G1/60 B23P11/00

    摘要: A system, method, and apparatus includes a computed tomography (CT) detector array having a central region with a plurality of central region detecting cells configured to acquire CT data of a first number of slices during a scan, a first wing along a first side of the central region, and a second wing along a second side of the central region opposite the first side. The first wing includes a plurality of first wing detecting cells configured to acquire CT data of a second number of slices during the scan. The second wing includes a plurality of second wing detecting cells configured to acquire CT data of a third number of slices during the scan. The second and third number of slices are less than the first number of slices. The first wing detecting cells are of a different type than the central region detecting cells.

    摘要翻译: 系统,方法和装置包括具有中心区域的计算机断层摄影(CT)检测器阵列,多个中心区域检测单元被配置为在扫描期间获取第一数量的切片的CT数据,沿着第一侧 并且沿着与第一侧相对的中心区域的第二侧的第二翼。 第一机翼包括多个第一机翼检测单元,其被配置为在扫描期间获取第二数量的切片的CT数据。 第二翼包括多个第二翼检测单元,其被配置为在扫描期间获取第三数量的切片的CT数据。 第二和第三数量的切片小于第一数量的切片。 第一机翼检测单元与中央区域检测单元不同。

    Asymmetric de-populated detector for computed tomography and method of making same
    6.
    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
    7.
    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。

    METHOD AND APPARATUS FOR ADAPTIVE SCATTER CORRECTION
    8.
    发明申请
    METHOD AND APPARATUS FOR ADAPTIVE SCATTER CORRECTION 有权
    自适应散射校正的方法和装置

    公开(公告)号:US20130058450A1

    公开(公告)日:2013-03-07

    申请号:US13223803

    申请日:2011-09-01

    IPC分类号: A61B6/03

    摘要: A CT system includes a rotatable gantry having an opening to receive an object to be scanned, an x-ray source configured to project an x-ray beam toward the object having a primary intensity, a detector configured to detect high frequency electromagnetic energy passing through the object and output imaging data, and a data acquisition system (DAS) connected to the detector and configured to receive the imaging data. The system also includes a computer programmed to obtain image projection data of the object from the DAS, correct the projection data using a scatter function that is based at least on a known characteristic of the x-ray beam, and generate images using the corrected projection data.

    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,被配置为将X射线束投影到具有主要强度的物体的X射线源;检测器,被配置为检测经过的高频电磁能 物体和输出成像数据,以及连接到检测器并被配置为接收成像数据的数据采集系统(DAS)。 该系统还包括被编程为从DAS获得对象的图像投影数据的计算机,使用至少基于X射线束的已知特征的散射函数校正投影数据,并使用校正的投影产生图像 数据。

    Method and apparatus for adaptive scatter correction
    9.
    发明授权
    Method and apparatus for adaptive scatter correction 有权
    自适应散射校正的方法和装置

    公开(公告)号:US09320477B2

    公开(公告)日:2016-04-26

    申请号:US13223803

    申请日:2011-09-01

    IPC分类号: A61B6/03 A61B6/00

    摘要: A CT system includes a rotatable gantry having an opening to receive an object to be scanned, an x-ray source configured to project an x-ray beam toward the object having a primary intensity, a detector configured to detect high frequency electromagnetic energy passing through the object and output imaging data, and a data acquisition system (DAS) connected to the detector and configured to receive the imaging data. The system also includes a computer programmed to obtain image projection data of the object from the DAS, correct the projection data using a scatter function that is based at least on a known characteristic of the x-ray beam, and generate images using the corrected projection data.

    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,被配置为将X射线束投影到具有主要强度的物体的X射线源;检测器,被配置为检测经过的高频电磁能 物体和输出成像数据,以及连接到检测器并被配置为接收成像数据的数据采集系统(DAS)。 该系统还包括被编程为从DAS获得对象的图像投影数据的计算机,使用至少基于X射线束的已知特征的散射函数校正投影数据,并使用校正的投影产生图像 数据。