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    Systems, methods and apparatus for specialized filtered back-projection reconstruction for digital tomosynthesis
    2.
    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。

    Radiographic tomosynthesis image acquisition utilizing asymmetric geometry
    3.
    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。

    Method and system to generate object image slices
    5.
    发明授权
    Method and system to generate object image slices 有权
    生成对象图像切片的方法和系统

    公开(公告)号：US07515682B2

    公开(公告)日：2009-04-07

    申请号：US11345918

    申请日：2006-02-02

    申请人： Baojun Li ,  Stephen W. Metz ,  Jiang Hsieh ,  Yogesh Srinivas ,  Xianfeng Ni ,  Tabb Patz

    发明人： Baojun Li ,  Stephen W. Metz ,  Jiang Hsieh ,  Yogesh Srinivas ,  Xianfeng Ni ,  Tabb Patz

    IPC分类号： A61B6/03

    CPC分类号： A61B6/465 ,  A61B6/025

    摘要： A method for creating a variable slice thickness for displaying an imaged object is disclosed. The method includes acquiring a plurality of projection images from a plurality of different projection angles within a defined sweep angle, reconstructing a plurality of object images from the plurality of projection images, each object image having a first slice thickness, and applying a function rule to combine images, whole images or portions thereof or attributes thereof, of the plurality of projection images, of the plurality of object images, or of both, thereby providing for the display of the object utilizing a second slice thickness that varies from the first slice thickness.

    摘要翻译： 公开了一种用于创建用于显示成像对象的可变切片厚度的方法。 该方法包括从定义的扫描角度内的多个不同投影角度获取多个投影图像，从多个投影图像重构多个对象图像，每个对象图像具有第一切片厚度，并将功能规则应用于 组合多个投影图像中的多个对象图像或两者的图像，整个图像或其部分或其属性，从而利用从第一切片厚度变化的第二切片厚度来提供对象的显示 。

    Tomosynthesis imaging data compression system and method
    6.
    发明申请
    Tomosynthesis imaging data compression system and method 审中-公开
    骨骼合成成像数据压缩系统及方法

    公开(公告)号：US20080219567A1

    公开(公告)日：2008-09-11

    申请号：US11714969

    申请日：2007-03-07

    申请人： Bernhard Erich Hermann Claus ,  Frederick Wilson Wheeler ,  Baojun Li ,  Razvan Gabriel Iordache

    发明人： Bernhard Erich Hermann Claus ,  Frederick Wilson Wheeler ,  Baojun Li ,  Razvan Gabriel Iordache

    IPC分类号： G06K9/36

    CPC分类号： H04N19/17 ,  H04N19/103 ,  H04N19/14 ,  H04N19/162 ,  H04N19/174 ,  H04N19/593

    摘要： A technique and system are provided for compression of tomosynthesis imaging data. In an embodiment of the present technique, tomosynthesis imaging data may be compressed by processing a stack of tomosynthesis images such that differences between some or all of the images or estimates of the images are encoded. In another embodiment of the present technique, tomosynthesis imaging data may be compressed by differentially compressing two or more regions within the one or more tomosynthesis imaging datasets. In addition, there is provided tangible, machine readable media, with code executable to perform the acts of obtaining one or more tomosynthesis imaging datasets and compressing the one or more tomosynthesis imaging datasets using one or more compression algorithms.

    摘要翻译： 提供了一种技术和系统来压缩断层摄影成像数据。 在本技术的一个实施例中，可以通过处理层叠合成图像来压缩层析融合成像数据，使得编码图像中的一些或所有图像或估计之间的差异。 在本技术的另一个实施例中，可以通过差分压缩一个或多个断层成像数据集内的两个或多个区域来压缩断层融合成像数据。 此外，提供了有形的机器可读介质，其具有可执行代码以执行获得一个或多个断层合成成像数据集的动作，并使用一个或多个压缩算法来压缩一个或多个断层合成成像数据集。

    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。

    Systems, methods and apparatus for filtered back-projection reconstruction in digital tomosynthesis
    9.
    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。