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    Compact geometry CT system
    1.
    发明授权
    Compact geometry CT system 有权
    紧凑型CT系统

    公开(公告)号：US09417340B2

    公开(公告)日：2016-08-16

    申请号：US13543255

    申请日：2012-07-06

    申请人： Samit Kumar Basu ,  Pedro Andres Garzon ,  Jed Douglas Pack

    发明人： Samit Kumar Basu ,  Pedro Andres Garzon ,  Jed Douglas Pack

    IPC分类号： G01T1/29 ,  G01N23/04 ,  G01V5/00

    CPC分类号： G01T1/2985 ,  G01N23/046 ,  G01N2223/419 ,  G01V5/005 ,  Y10T29/49826

    摘要： 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.

    摘要翻译： 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距离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。

    Systems and methods for thin object imaging
    2.
    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

    申请人： Samit Kumar Basu ,  Todd Jason Gable

    发明人： Samit Kumar Basu ,  Todd Jason Gable

    IPC分类号： G06K9/40

    CPC分类号： G06T11/008

    摘要： 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.

    摘要翻译： 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 for energy sensitive computed tomography using checkerboard filtering
    5.
    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

    申请人： Peter Michael Edic ,  Colin Richard Wilson ,  Samit Kumar Basu

    发明人： Peter Michael Edic ,  Colin Richard Wilson ,  Samit Kumar Basu

    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。

    DUAL-FOCUS X-RAY TUBE FOR RESOLUTION ENHANCEMENT AND ENERGY SENSITIVE CT
    8.
    发明申请
    DUAL-FOCUS X-RAY TUBE FOR RESOLUTION ENHANCEMENT AND ENERGY SENSITIVE CT 有权
    用于分辨率增强和能量敏感CT的双重X射线管

    公开(公告)号：US20080247504A1

    公开(公告)日：2008-10-09

    申请号：US11954295

    申请日：2007-12-12

    申请人： Peter Michael Edic ,  Samit Kumar Basu

    发明人： Peter Michael Edic ,  Samit Kumar Basu

    IPC分类号： A61B6/00

    CPC分类号： A61B6/405 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4021 ,  A61B6/4028 ,  A61B6/4035 ,  A61B6/4085 ,  A61B6/4233 ,  A61B6/482 ,  G01T1/295 ,  G01T1/2985 ,  G01V5/0041 ,  G01V5/005 ,  H01J35/14 ,  H01J35/30

    摘要： A CT system includes a rotatable gantry having an opening for receiving an object to be scanned, at least one x-ray source coupled to the gantry and configured to project x-rays toward the object, a detector coupled to the gantry and having a scintillator therein and configured to receive x-rays that pass through the object, and a generator configured to energize the at least one x-ray source. The system includes a controller configured to energize the generator to project a first beam of x-rays toward the object from a first focal spot position of an anode, the first beam of x-rays having a ray traversing a path through the object, acquire imaging data from the first beam of x-rays, position the at least one x-ray source such that a second beam of x-rays projected from a second focal spot position of the anode has a ray directed to traverse the path through the object, the second anode focal spot position different than the first anode focal spot position, energize the generator to project the second beam of x-rays toward the object, and acquire imaging data from the second beam of x-rays.

    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台架，耦合到台架并被配置为向物体投射X射线的至少一个x射线源，耦合到台架并具有闪烁体 并且被配置为接收穿过物体的x射线，以及被配置为激励至少一个x射线源的发生器。 该系统包括控制器，该控制器被配置为对发生器进行激励，以从阳极的第一焦斑位置朝向物体投射第一射线束，第一射线X射线具有穿过物体的路径的光线 从X射线的第一束成像数据，定位至少一个x射线源，使得从阳极的第二焦点位置投影的第二射线束具有指向穿过物体的路径的射线 第二阳极焦点位置不同于第一阳极焦斑位置，激励发生器将第二射线束朝向物体投射，并从第二射线束获取成像数据。

    Method and system of CT data correction
    10.
    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

    申请人： Bruno K. B. De Man ,  Samit Kumar Basu

    发明人： Bruno K. B. De Man ,  Samit Kumar Basu

    IPC分类号： H05G1/60

    CPC分类号： 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

    摘要： 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.