公开(公告)号：US08396273B2

公开(公告)日：2013-03-12

申请号：US12650116

申请日：2009-12-30

申请人： Baojun Li ,  Naveen Stephan Chandra ,  Jed Douglas Pack ,  Jiang Hsieh ,  Xiaoye Wu ,  Mary Sue Kulpins

发明人： Baojun Li ,  Naveen Stephan Chandra ,  Jed Douglas Pack ,  Jiang Hsieh ,  Xiaoye Wu ,  Mary Sue Kulpins

IPC分类号： G06K9/00

CPC分类号： G06T11/008 ,  G06T2211/408

摘要： A method is provided that includes acquiring a first set of image data from X-rays produced at a first energy level and a second set of image data from X-rays produced at a second energy level. The method includes generating a first noise mask for a first basis material and a second noise mask for a second basis material and removing pixels corresponding to cross contaminating structural information from the first noise mask and the second noise mask. The method includes processing a first materially decomposed image generated from the first set of image data and the second set of digital data using the second noise mask after removal of the cross contaminating structural information and processing a second MD image generated from the first set of image data and the second set of digital data using the first noise mask after removal of the cross contaminating structural information.

摘要翻译： 提供了一种方法，其包括从在第二能量级产生的X射线以从第一能量级产生的X射线和第二组图像数据获取第一组图像数据。 该方法包括为第一基材生成第一噪声掩模和第二基材的第二噪声掩模，并从第一噪声掩模和第二噪声掩模去除对应于交叉污染结构信息的像素。 该方法包括在去除交叉污染的结构信息之后处理从第一组图像数据和第二组数字数据生成的第一物理分解图像，并且处理从第一组图像生成的第二MD图像 数据和第二组数字数据，在去除交叉污染结构信息之后使用第一噪声掩模。

公开(公告)号：US07920751B2

公开(公告)日：2011-04-05

申请号：US11687410

申请日：2007-03-16

申请人： Baojun Li ,  Jiang Hsieh

发明人： Baojun Li ,  Jiang Hsieh

IPC分类号： G06K9/40

CPC分类号： G01T1/2985

摘要： An imaging system includes a two-dimensional detector having a plurality of cells wherein each cell is configured to detect energy or signal passing through an object. The imaging system includes a computer programmed to acquire imaging data for the plurality of cells, identify a cell to be corrected, based on the imaging data, interpolate Ix and Iy for the identified cell based on neighbor cells, and calculate local gradients gx and gy between the identified cell and its neighbor cells based on the interpolation. The computer is further programmed to calculate weighting factors wx and wy based on the local gradients, calculate a corrected final value I(0,0) for the identified cell, and correct the identified cell with the corrected final value.

摘要翻译： 成像系统包括具有多个单元的二维检测器，其中每个单元被配置为检测通过物体的能量或信号。 成像系统包括被编程为采集多个单元的成像数据的计算机，基于成像数据识别要校正的单元，基于相邻单元对所识别的单元插值Ix和Iy，并计算局部梯度gx和gy 基于内插，在所识别的小区及其相邻小区之间。 计算机还被编程为基于局部梯度计算加权因子wx和wy，计算所识别的单元的校正后的最终值I（0,0），并用校正的最终值校正所识别的单元。

公开(公告)号：US07920729B2

公开(公告)日：2011-04-05

申请号：US11463845

申请日：2006-08-10

申请人： Gopal B. Avinash ,  Kenny Kishan Israni ,  Baojun Li

发明人： Gopal B. Avinash ,  Kenny Kishan Israni ,  Baojun Li

IPC分类号： G06K9/00 ,  A61B6/00

CPC分类号： G06T7/143 ,  A61B6/508 ,  G06T7/11 ,  G06T7/194 ,  G06T2207/10112 ,  G06T2207/10116

摘要： A method includes using a point spread function based rule to classify regions in a dataset.

摘要翻译： 一种方法包括使用基于点扩散函数的规则来对数据集中的区域进行分类。

公开(公告)号：US07831015B2

公开(公告)日：2010-11-09

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 ,  A61B8/00

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。

公开(公告)号：US20100080357A1

公开(公告)日：2010-04-01

申请号：US12243610

申请日：2008-10-01

申请人： Jason Stuart Katcha ,  Thomas Louis Toth ,  Jiang Hsieh ,  Carey Shawn Rogers ,  John Scott Price ,  Baojun Li ,  Yun Zou

发明人： Jason Stuart Katcha ,  Thomas Louis Toth ,  Jiang Hsieh ,  Carey Shawn Rogers ,  John Scott Price ,  Baojun Li ,  Yun Zou

IPC分类号： H01J35/10 ,  H01J35/08

CPC分类号： H01J35/10 ,  H01J2235/068 ,  H01J2235/086

摘要： An x-ray tube is disclosed herein. The x-ray tube includes an anode assembly adapted to rotate generally about a rotational axis. The anode assembly includes a first target surface at least partially disposed at a first angle greater than 70 degrees with respect to the rotational axis and a second target surface at least partially disposed at a second angle greater than 70 degrees with respect to the rotational axis. The first target surface is adapted to emit a first x-ray beam and the second target surface is adapted to emit a second x-ray beam. A CT system is also disclosed.

摘要翻译： 本文公开了一种X射线管。 X射线管包括适于大致围绕旋转轴线旋转的阳极组件。 阳极组件包括至少部分地以相对于旋转轴线大于70度的第一角度设置的第一目标表面和相对于旋转轴线以大于70度的第二角度至少部分地设置的第二目标表面。 第一目标表面适于发射第一x射线束，并且第二目标表面适于发射第二x射线束。 还公开了一种CT系统。

公开(公告)号：US07649973B1

公开(公告)日：2010-01-19

申请号：US12244569

申请日：2008-10-02

申请人： Baojun Li ,  Thomas Louis Toth ,  Jiang Hsieh

发明人： Baojun Li ,  Thomas Louis Toth ,  Jiang Hsieh

IPC分类号： G01N23/083

CPC分类号： G01N23/04 ,  A61B6/032 ,  A61B6/4035 ,  A61B6/482 ,  A61B6/542 ,  G01N2223/313 ,  G01T1/2985

摘要： An imaging system includes at least two x-ray sources, an x-ray detector assembly and an attenuation filter. The at least two x-ray sources are displaced along a z-axis and configured to alternately emit x-ray beams. The x-ray detector assembly is configured to detect the x-ray beams. The attenuation filter is mounted proximate the at least two x-ray sources and is configured to provide different amounts of x-ray attenuation to the x-ray beams along the z-axis.

摘要翻译： 成像系统包括至少两个X射线源，X射线检测器组件和衰减滤波器。 所述至少两个x射线源沿Z轴移位并被配置为交替地发射x射线束。 x射线检测器组件被配置为检测x射线束。 所述衰减滤波器安装在所述至少两个x射线源附近，并且被配置为沿着z轴向x射线束提供不同量的X射线衰减。

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 。

公开(公告)号：US20090060310A1

公开(公告)日：2009-03-05

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： G06K9/00

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 。

公开(公告)号：US20080037846A1

公开(公告)日：2008-02-14

申请号：US11463845

申请日：2006-08-10

申请人： Gopal B. Avinash ,  Kenny Kishan Israni ,  Baojun Li

发明人： Gopal B. Avinash ,  Kenny Kishan Israni ,  Baojun Li

IPC分类号： G06K9/00 ,  G06K9/40

CPC分类号： G06T7/143 ,  A61B6/508 ,  G06T7/11 ,  G06T7/194 ,  G06T2207/10112 ,  G06T2207/10116

摘要： A method includes using a point spread function based rule to classify regions in a dataset.

摘要翻译： 一种方法包括使用基于点扩散函数的规则来对数据集中的区域进行分类。

公开(公告)号：US07286631B2

公开(公告)日：2007-10-23

申请号：US11339067

申请日：2006-01-25

申请人： Baojun Li ,  Rowland Saunders ,  John Sandrik ,  Xianfeng Ni

发明人： Baojun Li ,  Rowland Saunders ,  John Sandrik ,  Xianfeng Ni

IPC分类号： A61B6/00

CPC分类号： A61B6/583 ,  A61B6/025 ,  G06T11/005 ,  G06T2211/436

摘要： A method and apparatus for tomosynthesis image quality control for a tomosynthesis imaging system. The method and apparatus including: positioning a phantom having an edge of predetermined sharpness at a predetermined angle relative to an imaging plane of an x-ray detector; performing tomosynthesis acquisition and generating one or more slice images using one or more three-dimensional reconstruction algorithms; selecting a slice image to be measured from the one or more slice images; identifying a sharpest edge in the slice image to be measured, wherein the sharpest edge in the slice image to be measured includes the in-focus portion of the phantom; inputting the slice image to be measured and coordinates of the sharpest edge in the slice image to be measured into a modulation transfer function (MTF) algorithm; and, using the MTF algorithm, calculating the in-plane resolution and slice thickness of the slice image to be measured.

摘要翻译： 一种用于断层合成成像系统的层析合成图像质量控制的方法和装置。 所述方法和装置包括：相对于X射线检测器的成像平面将具有预定锐度的边缘的假想物体以预定角度定位; 执行层析合成获取并使用一个或多个三维重建算法生成一个或多个切片图像; 从所述一个或多个切片图像中选择要测量的切片图像; 识别要测量的切片图像中的最锐边，其中要测量的切片图像中的最锐边包括体模的对焦部分; 将要测量的切片图像和要测量的切片图像中最锐边的坐标输入调制传递函数（MTF）算法; 并使用MTF算法计算要测量的切片图像的面内分辨率和切片厚度。