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47 条记录 (耗时 0.02 秒)

    MULTIPLE X-RAY TUBE SYSTEM AND METHOD OF MAKING SAME
    31.
    发明申请
    MULTIPLE X-RAY TUBE SYSTEM AND METHOD OF MAKING SAME 有权
    多个X射线管系统及其制造方法

    公开(公告)号：US20110150174A1

    公开(公告)日：2011-06-23

    申请号：US12642965

    申请日：2009-12-21

    申请人： Paavana Sainath ,  Peter Crandall ,  Abdelaziz Ikhlef ,  Chad Smith ,  Ron Kent Hockersmith ,  Baojun Li

    发明人： Paavana Sainath ,  Peter Crandall ,  Abdelaziz Ikhlef ,  Chad Smith ,  Ron Kent Hockersmith ,  Baojun Li

    IPC分类号： H05G1/60

    CPC分类号： A61B6/4429 ,  G01T1/2985

    摘要： An imaging system includes a rotatable gantry having an opening therein to receive a subject to be scanned and configured to rotate about a central axis in a rotation direction. The imaging system also includes a first x-ray source coupled to the rotatable gantry at a first position, wherein the first position is offset from the central axis of the rotatable gantry by a first distance. Further, the imaging system includes a second x-ray source coupled to the rotatable gantry at a second position, wherein the second position is offset from the central axis of the rotatable gantry by a second distance, wherein the second position is offset from the first position in a direction coincident with the rotation direction, and wherein the second position is offset from the first position in a direction parallel to the central axis.

    摘要翻译： 成像系统包括可旋转机架，其中具有开口，用于接收被扫描的物体并构造为围绕旋转方向的中心轴线旋转。 成像系统还包括在第一位置处联接到可旋转机架的第一x射线源，其中第一位置从可旋转机架的中心轴线偏移第一距离。 此外，成像系统包括在第二位置处联接到可旋转机架的第二x射线源，其中第二位置从可旋转机架的中心轴线偏移第二距离，其中第二位置偏离第一位置 位置在与旋转方向一致的方向上，并且其中第二位置在平行于中心轴线的方向上偏离第一位置。

    Systems, methods and apparatus for specialized filtered back-projection reconstruction for digital tomosynthesis
    33.
    发明授权
    Systems, methods and apparatus for specialized filtered back-projection reconstruction for digital tomosynthesis 有权
    用于数字断层合成的专门滤波反投影重建的系统，方法和装置

    公开(公告)号：US07457451B2

    公开(公告)日：2008-11-25

    申请号：US11950418

    申请日：2007-12-04

    申请人： Jiang Hsieh ,  Stephen W. Metz ,  Gopal B. Avinash ,  Baojun Li ,  John Michael Sabol

    发明人： Jiang Hsieh ,  Stephen W. Metz ,  Gopal B. Avinash ,  Baojun Li ,  John Michael Sabol

    IPC分类号： G06K9/00 ,  G01N23/223

    CPC分类号： G06T11/005 ,  G06T2211/424 ,  G06T2211/436

    摘要： Systems, methods and apparatus are provided through which in one aspect, a three-dimensional (3D) image of an object is constructed from a plurality of two-dimensional (2D) images of the object using a specialized filter. In some embodiments, the specialized filter implements a linear ramp function, a windowing function, and/or a polynomial function. In some embodiments, the 3D image is back-projected from the filtered two-dimensional images, yielding a 3D image that has improved visual distinction of overlapping anatomic structures and reduced blurring.

    摘要翻译： 提供了一种系统，方法和装置，通过该系统，方法和装置，在一个方面，使用专用滤波器从对象的多个二维（2D）图像构建对象的三维（3D）图像。 在一些实施例中，专用滤波器实现线性斜坡函数，加窗函数和/或多项式函数。 在一些实施例中，3D图像从经过滤的二维图像反投影，产生3D重建解剖结构改善的视觉区别并减少模糊。

    System and method for cross table tomosynthesis imaging for trauma applications
    34.
    发明申请
    System and method for cross table tomosynthesis imaging for trauma applications 有权
    用于创伤应用的交叉台层合成成像系统和方法

    公开(公告)号：US20070110212A1

    公开(公告)日：2007-05-17

    申请号：US11280151

    申请日：2005-11-16

    申请人： Baojun Li ,  Renuka Uppaluri ,  Carson Thomas ,  Gerald Schulte ,  Gopal Avinash ,  Rowland Saunders ,  Tammy Merisotis

    发明人： Baojun Li ,  Renuka Uppaluri ,  Carson Thomas ,  Gerald Schulte ,  Gopal Avinash ,  Rowland Saunders ,  Tammy Merisotis

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

    CPC分类号： A61B6/025 ,  A61B6/4291 ,  G01N23/044 ,  G01N2223/419 ,  G01N2223/612

    摘要： The presently described technology provides a tomosynthesis imaging system that comprises an x-ray tube and an anti-scatter grid. The x-ray tube is configured to emit x-rays from a plurality of positions during movement of the x-ray tube along a long axis of a mobile patient surface. The anti-scatter grid is configured to filter out scattered x-rays and includes a grid line parallel to the long axis of the mobile patient surface. The x-rays emitted from the plurality of positions are reconstructed into at least one image of at least one plane of a patient anatomy. The described technology is useful in emergency or trauma applications where a patient may be quickly and easily moved on a mobile patient surface to a position near an x-ray detector used in combination with the x-ray tube and anti-scatter grid.

    摘要翻译： 目前描述的技术提供了一种包含X射线管和防散射栅格的断层融合成像系统。 X射线管被配置为在X射线管沿着移动患者表面的长轴移动期间从多个位置发射X射线。 防散射网格被配置为过滤散射的X射线，并且包括平行于移动患者表面的长轴的网格线。 从多个位置发射的x射线被重建成患者解剖结构的至少一个平面的至少一个图像。 所描述的技术在紧急或创伤应用中是有用的，其中患者可以快速且容易地在移动患者表面上移动到与x射线管和防散射网格组合使用的x射线检测器附近的位置。

    Radiographic tomosynthesis image acquisition utilizing asymmetric geometry
    35.
    发明授权
    Radiographic tomosynthesis image acquisition utilizing asymmetric geometry 有权
    使用不对称几何的射线照相断层合成图像采集

    公开(公告)号：US06885724B2

    公开(公告)日：2005-04-26

    申请号：US10646023

    申请日：2003-08-22

    申请人： Baojun Li ,  Abdulrahman Al-Khalidy ,  Jeffrey W. Eberhard ,  Stephen W. Metz ,  Bernhard Erich Hermann Claus ,  Vianney Pierre Battle

    发明人： Baojun Li ,  Abdulrahman Al-Khalidy ,  Jeffrey W. Eberhard ,  Stephen W. Metz ,  Bernhard Erich Hermann Claus ,  Vianney Pierre Battle

    IPC分类号： A61B6/00 ,  A61B6/02 ,  G01N23/04 ,  G01T1/29 ,  G01N23/00

    CPC分类号： G01T1/2985 ,  A61B6/025 ,  A61B6/4464 ,  G01N23/044 ,  G01N2223/419 ,  G01N2223/612

    摘要： Systems and methods that utilize asymmetric geometry to acquire radiographic tomosynthesis images are described. Embodiments comprise tomosynthesis systems and methods for creating a reconstructed image of an object from a plurality of two-dimensional x-ray projection images. These systems comprise: an x-ray detector; and an x-ray source capable of emitting x-rays directed at the x-ray detector; wherein the tomosynthesis system utilizes asymmetric image acquisition geometry, where θ1≠θ0, during image acquisition, wherein θ1 is a sweep angle on one side of a center line of the x-ray detector, and θ0 is a sweep angle on an opposite side of the center line of the x-ray detector, and wherein the total sweep angle, θasym, is θasym=θ1+θ0. Reconstruction algorithms may be utilized to produce reconstructed images of the object from the plurality of two-dimensional x-ray projection images.

    摘要翻译： 描述了利用不对称几何来获取放射照相断层合成图像的系统和方法。 实施例包括用于从多个二维x射线投影图像创建对象的重建图像的层析合成系统和方法。 这些系统包括：x射线检测器; 以及能够发射针对x射线检测器的x射线的x射线源; 其中所述断层合成系统在图像采集期间利用不对称图像采集几何形状，其中θ1是扫掠角 在X射线检测器的中心线的一侧，θX是在x射线检测器的中心线的相对侧上的扫掠角，并且其中，总扫掠角度 不对称的是不对称的是不对称的。 可以利用重建算法从多个二维X射线投影图像中产生物体的重建图像。

    COMBINING X-RAY AND ULTRASOUND IMAGING FOR ENHANCED MAMMOGRAPHY
    39.
    发明申请
    COMBINING X-RAY AND ULTRASOUND IMAGING FOR ENHANCED MAMMOGRAPHY 有权
    组合X射线和超声波成像增强动画

    公开(公告)号：US20100246760A1

    公开(公告)日：2010-09-30

    申请号：US12415637

    申请日：2009-03-31

    申请人： Baojun Li ,  Jean-Baptiste Thibault ,  Anne Lindsay Hall

    发明人： Baojun Li ,  Jean-Baptiste Thibault ,  Anne Lindsay Hall

    IPC分类号： A61B6/04 ,  A61B8/14

    CPC分类号： A61B6/032 ,  A61B6/0435 ,  A61B6/4417 ,  A61B6/466 ,  A61B6/502 ,  A61B6/5247 ,  A61B8/0825 ,  A61B8/406 ,  A61B8/4416

    摘要： A mammography system includes a patient support with a breast opening. Beneath the patient support, an x-ray source transmits x-rays through a breast of a patient extending through the opening. An opposing x-ray detector receives the x-rays to obtain an x-ray image of the breast. The x-ray source and x-ray detector rotate around the opening while maintaining a fixed relation relative to one another, and a container is filled with a fluid and positioned proximate to and aligned with the opening to receive the breast. An ultrasound transmitter transmits sound waves through the breast when positioned within the fluid. An opposing ultrasound receiver receives the sound waves to obtain an ultrasound image of the breast. In a preferred embodiment, the mammography system positions the ultrasound transmitter and/or ultrasound receiver at a first position when obtaining the x-ray image of the breast and a second position when obtaining the ultrasound image of the breast. In other preferred embodiments, mammography methods correspond thereto.

    摘要翻译： 乳房X线照相系统包括具有胸部开口的患者支架。 在患者支架下方，x射线源通过穿过开口的患者的乳房透射x射线。 相对的X射线检测器接收x射线以获得乳房的X射线图像。 X射线源和X射线检测器围绕开口旋转，同时保持相对于彼此的固定关系，并且容器填充有流体并且定位成靠近开口并与开口对准以接收乳房。 当定位在流体内时，超声波发射器通过乳房发射声波。 相对的超声波接收器接收声波以获得乳房的超声图像。 在优选实施例中，当获得乳房的X射线图像时，乳房X线照相系统将超声波发射器和/或超声波接收器定位在第一位置，并且当获得乳房的超声图像时将其定位在第二位置。 在其它优选实施例中，乳房X线照相术方法对应于此。