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    Systems, methods and apparatus for specialized filtered back-projection reconstruction for digital tomosynthesis
    5.
    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。

    Systems, methods and apparatus for filtered back-projection reconstruction in digital tomosynthesis
    6.
    发明授权
    Systems, methods and apparatus for filtered back-projection reconstruction in digital tomosynthesis 有权
    用于数字断层合成过滤反投影重建的系统，方法和装置

    公开(公告)号：US07522755B2

    公开(公告)日：2009-04-21

    申请号：US11069308

    申请日：2005-03-01

    申请人： Baojun Li ,  Gopal B. Avinash ,  Renuka Uppaluri

    发明人： Baojun Li ,  Gopal B. Avinash ,  Renuka Uppaluri

    IPC分类号： G06K9/00

    CPC分类号： G06T11/006 ,  G06T11/005 ,  G06T11/008 ,  G06T2211/421 ,  G06T2211/436 ,  Y10S128/922

    摘要： Systems, methods and apparatus are provided through which a specialized back-projection process reconstructs a finely detailed and crisp three-dimensional image (3-D) from a series of two-dimensional (2-D) images by pre-filtering the 2-D images with a first group of settings before back-projecting the 2-D images into a 3-D image, and then post-filtering the 3-D image with another group of settings. In some embodiments, the first group of settings and the second group of settings are synergistically optimized in relation to each other to provide emphasis on a structure of interest in the object.

    摘要翻译： 提供了系统，方法和装置，通过该系统，方法和装置，专门的反投影处理通过对2-维图像进行预滤波来重建来自一系列二维（2-D）图像的精细细节和清晰的三维图像（3-D） D图像具有第一组设置，然后将2D图像反投影到3-D图像中，然后用另一组设置对3-D图像进行后置滤波。 在一些实施例中，第一组设置和第二组设置协同地相互优化以提供对对象中感兴趣的结构的强调。

    Systems, methods and apparatus for consistency-constrained filtered backprojection for out-of-focus artifacts in digital tomosythesis
    7.
    发明授权
    Systems, methods and apparatus for consistency-constrained filtered backprojection for out-of-focus artifacts in digital tomosythesis 有权
    用于一致性约束的滤波反投影的系统，方法和装置，用于数字断层扫描中的离焦伪像

    公开(公告)号：US07873236B2

    公开(公告)日：2011-01-18

    申请号：US11846009

    申请日：2007-08-28

    申请人： Baojun Li ,  Gopal B. Avinash

    发明人： Baojun Li ,  Gopal B. Avinash

    IPC分类号： G06K9/40

    CPC分类号： G06T11/006 ,  G06T2211/421

    摘要： Systems, methods and apparatus are provided through which in some embodiments during backprojection of filtered two-dimensional into three dimensional image each voxel is analyzed for inconsistent contributions based on at least two criteria and each of the inconsistent contributions is either replaced or excluded from the backprojection.

    摘要翻译： 提供了系统，方法和装置，在一些实施例中，在将过滤的二维反投影到三维图像期间，每个体素基于至少两个标准被分析不一致的贡献，并且每个不一致的贡献被从反投影中被替换或排除 。

    System and method for cross table tomosynthesis imaging for trauma applications
    8.
    发明授权
    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：US07418076B2

    公开(公告)日：2008-08-26

    申请号：US11280151

    申请日：2005-11-16

    申请人： Baojun Li ,  Renuka Uppaluri ,  Carson Hale Thomas ,  Gerald Paul Schulte ,  Gopal B. Avinash ,  Rowland F. Saunders ,  Tammy M. Merisotis

    发明人： Baojun Li ,  Renuka Uppaluri ,  Carson Hale Thomas ,  Gerald Paul Schulte ,  Gopal B. Avinash ,  Rowland F. Saunders ,  Tammy M. Merisotis

    IPC分类号： A61B6/00

    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。