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    Systems and methods for thin object imaging
    31.
    发明授权
    Systems and methods for thin object imaging 有权
    薄物体成像的系统和方法

    公开(公告)号：US08953902B2

    公开(公告)日：2015-02-10

    申请号：US13542697

    申请日：2012-07-06

    Applicant: Samit Kumar Basu ,  Todd Jason Gable

    Inventor： Samit Kumar Basu ,  Todd Jason Gable

    IPC: G06K9/40

    CPC classification number: G06T11/008

    Abstract: A method for imaging an object is provided. The method includes acquiring image data of the object, wherein the image data includes a plurality of original voxels each having an original CT number, identifying, using a processing device, a subset of the original voxels based on at least one of an original CT number and a location of each original voxel, applying, using the processing device, an anisotropic smoothing filter to the identified original voxels in the subset to generate a set of smoothed voxels each having a smoothed CT number, generating, using the processing device, smoothed image data by combining the original voxels and the smoothed voxels, and analyzing the smoothed image data to determine whether the object contains contraband.

    Abstract translation: 提供了一种用于成像对象的方法。 所述方法包括获取所述对象的图像数据，其中所述图像数据包括每个具有原始CT号码的多个原始体素，基于原始CT数字中的至少一个，使用处理设备识别所述原始体素的子集 以及每个原始体元的位置，使用处理设备向所述子集中的所识别的原始体素应用各向异性平滑滤波器，以生成每个具有平滑CT数的平滑体素集合，使用所述处理设备生成平滑图像 通过组合原始体素和平滑体素的数据，并分析平滑的图像数据以确定对象是否包含违禁品。

    Method and system of CT data correction
    36.
    发明授权
    Method and system of CT data correction 有权

    公开(公告)号：US07283604B2

    公开(公告)日：2007-10-16

    申请号：US11627121

    申请日：2007-01-25

    Applicant: Bruno K. B. De Man ,  Samit Kumar Basu

    Inventor： Bruno K. B. De Man ,  Samit Kumar Basu

    IPC: H05G1/60

    CPC classification number: G01T1/1644 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4241 ,  A61B6/482 ,  A61B6/583 ,  G01T1/1647 ,  G06T5/002 ,  G06T5/20 ,  G06T2207/10081 ,  G06T2207/30004 ,  G06T2207/30112 ,  Y10S378/901

    Abstract: An adaptive CT data acquisition system and technique is presented whereby radiation emitted for CT data acquisition is dynamically controlled to limit exposure to those detectors of a CT detector assembly that may be particularly susceptible to saturation during a given data acquisition. The data acquisition technique recognizes that for a given subject size and position that pre-subject filtering and collimating of a radiation beam may be insufficient to completely prevent detector saturation. Therefore, the present invention includes implementation of a number of CT data correction techniques for correcting otherwise unusable data of a saturated CT detector. These data correction techniques include a nearest neighbor correction, off-centered phantom correction, off-centered synthetic data correction, scout data correction, planar radiogram correction, and a number of others. The invention is applicable with energy discriminating CT systems as well as with conventional CT systems and other multi-energy CT systems, such as dual kVp-based systems.

    Three-dimensional reprojection and backprojection methods and algorithms for implementation thereof
    37.
    发明授权
    Three-dimensional reprojection and backprojection methods and algorithms for implementation thereof 有权
    三维重投影和反投影方法及其实现方法

    公开(公告)号：US07227982B2

    公开(公告)日：2007-06-05

    申请号：US10356161

    申请日：2003-01-31

    Applicant: Bruno Kristiaan Bernard De Man ,  Samit Kumar Basu

    Inventor： Bruno Kristiaan Bernard De Man ,  Samit Kumar Basu

    IPC: G06K9/00

    CPC classification number: G06T11/006 ,  G06T11/008 ,  G06T2211/424

    Abstract: Methods for three-dimensional projecting and backprojecting rays with respect to voxels/detector bins to attenuate/eliminate high-frequency artifacts, are disclosed. A distance-driven technique wherein the transitions of the voxels and the detector bins are respectively projected onto a predetermined plane. This projection allows a determination of the contribution of each of the voxels/bins for each of the bins/voxels with lower computation time and improved artifact free images.

    Abstract translation: 公开了用于相对于体素/检测器箱的三维投影和反投影光线以衰减/消除高频伪影的方法。 距离驱动技术，其中体素和检测器箱的转变分别投影到预定平面上。 该投影允许以较低的计算时间和改善的无伪影图像来确定每个分组/体素的每个体素/分组的贡献。

    System and method for boundary estimation using CT metrology
    38.
    发明申请
    System and method for boundary estimation using CT metrology 失效
    使用CT计量的边界估计的系统和方法

    公开(公告)号：US20060002504A1

    公开(公告)日：2006-01-05

    申请号：US10880875

    申请日：2004-06-30

    Applicant: Bruno Kristiaan Bernard De Man ,  Samit Kumar Basu ,  Jong Ye

    Inventor： Bruno Kristiaan Bernard De Man ,  Samit Kumar Basu ,  Jong Ye

    IPC: G01N23/00 ,  G21K1/12 ,  H05G1/60 ,  A61B6/00

    CPC classification number: G06T11/006 ,  G06T2211/424

    Abstract: A technique is provided for CT reconstruction for use in CT metrology. The boundary based CT reconstruction method includes the steps of initializing a boundary of an object to obtain a boundary estimate, defining a forward model based on the boundary estimate, linearizing the forward model to obtain a system matrix and implementing an iterative image reconstruction process using the system matrix to update the boundary estimate.

    Abstract translation: 提供CT重建技术用于CT计量。 基于边界的CT重建方法包括初始化对象边界以获得边界估计的步骤，基于边界估计定义正向模型，将前向模型线性化以获得系统矩阵，并使用该方法实现迭代图像重建过程 系统矩阵来更新边界估计。

    METHOD FOR CORRECTION OF ARTIFACTS FROM EDGE DETECTORS IN COMPACT GEOMETRY CT
    39.
    发明申请
    METHOD FOR CORRECTION OF ARTIFACTS FROM EDGE DETECTORS IN COMPACT GEOMETRY CT 有权
    用于在紧密几何CT中从边缘检测器校正人造物的方法

    公开(公告)号：US20140010426A1

    公开(公告)日：2014-01-09

    申请号：US13542800

    申请日：2012-07-06

    Applicant: Samit Kumar Basu

    Inventor： Samit Kumar Basu

    IPC: G06K9/40 ,  H05G1/60 ,  G06K9/00

    CPC classification number: G06T11/005

    Abstract: A computer-implemented method for correcting artifacts in measured image data due to differential scatter rejection in a computed tomography system is provided. A system for correcting artifacts in measured image data due to differential scatter rejection in a computed tomography system is also provided. Additionally, a non-transitory computer readable storage medium storing computer-executable instructions thereon for correcting artifacts in measured image data due to differential scatter rejection in a computed tomography system is provided

    Abstract translation: 提供了一种用于在计算机断层摄影系统中校正由于差分散射抑制引起的测量图像数据中的伪像的计算机实现的方法。 还提供了一种用于在计算机断层摄影系统中校正由于差分散射抑制引起的测量图像数据中的伪影的系统。 另外，提供了一种非暂时性的计算机可读存储介质，用于在计算机断层摄影系统中存储由于差分散射抑制而在其上校正测量图像数据中的伪影的计算机可执行指令

    COMPACT GEOMETRY CT SYSTEM
    40.
    发明申请
    COMPACT GEOMETRY CT SYSTEM 有权
    紧凑几何CT系统

    公开(公告)号：US20140010343A1

    公开(公告)日：2014-01-09

    申请号：US13543255

    申请日：2012-07-06

    Applicant: Samit Kumar Basu ,  Pedro Andres Garzon

    Inventor： Samit Kumar Basu ,  Pedro Andres Garzon

    IPC: G01N23/04 ,  B23P11/00

    CPC classification number: G01T1/2985 ,  G01N23/046 ,  G01N2223/419 ,  G01V5/005 ,  Y10T29/49826

    Abstract: An imaging system is provided. The imaging system includes a rotating gantry. An x-ray source is mounted to the gantry. The system also includes a plurality of interchangeable x-ray detector modules is mounted to the gantry, opposite the x-ray source. The plurality of interchangeable detector modules includes a first detector module mounted at a first distance from the x-ray source and a second detector module mounted at a second distance from the x-ray source. The first distance is different from the second distance.

    Abstract translation: 提供成像系统。 成像系统包括旋转机架。 X射线源安装在龙门架上。 该系统还包括多个可互换的x射线探测器模块，安装到与X射线源相对的台架。 多个可互换检测器模块包括安装在离x射线源第一距离处的第一检测器模块和安装在离x射线源第二距离处的第二检测器模块。 第一距离与第二距离不同。

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