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1. 发明申请

US20080107324A1 SYSTEMS, METHODS AND APPARATUS FOR SPECIALIZED FILTERED BACK-PROJECTION RECONSTRUCTION FOR DIGITAL TOMOSYNTHESIS 有权
标题翻译：用于数字化硅胶的专用过滤后置投影重建的系统，方法和装置
公开(公告)号：US20080107324A1
公开(公告)日：2008-05-08
申请号：US11950418
申请日：2007-12-04
申请人： Jiang Hsieh , Stephen Metz , Gopal Avinash , Baojun Li , John Sabol
发明人： Jiang Hsieh , Stephen Metz , Gopal Avinash , Baojun Li , John Sabol
IPC分类号： G06K9/00
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。

2. 发明申请

US20050265590A1 Systems, methods and apparatus for specialized filtered back-projection reconstruction for digital tomosynthesis 有权
标题翻译：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：US20050265590A1
公开(公告)日：2005-12-01
申请号：US10859423
申请日：2004-06-01
申请人： Baojun Li , Stephen Metz , John Sabol , Gopal Avinash , Jiang Hsieh
发明人： Baojun Li , Stephen Metz , John Sabol , Gopal Avinash , Jiang Hsieh
IPC分类号： G06K9/00
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. The specialized filter implements a linear ramp function, a windowing function, and/or a polynomial function. 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。专用滤波器实现线性斜坡函数，加窗函数和/或多项式函数。 3D图像从经滤波的二维图像中反投影，产生3D图像，其改善了重叠解剖结构的视觉区别并减少了模糊。

3. 发明申请

US20050111616A1 Non-uniform view weighting tomosynthesis method and apparatus 有权
标题翻译：非均匀视图加权层析合成方法和装置
公开(公告)号：US20050111616A1
公开(公告)日：2005-05-26
申请号：US10723034
申请日：2003-11-26
申请人： Baojun Li , Bernhard Claus , Gopal Avinash , Stephen Metz , Jiang Hsieh
发明人： Baojun Li , Bernhard Claus , Gopal Avinash , Stephen Metz , Jiang Hsieh
IPC分类号： A61B6/02 , A61B6/03 , G06T11/00 , G21K1/12 , H05G1/60 , G01N23/00 , A61B6/00 , H05G1/00
CPC分类号： A61B6/025 , G06F19/00 , G06T11/005 , G06T2211/436
摘要： A technique is provided for non-uniform weighting in back-projection calculations in tomosythesis. The non-uniform weighting may include weighting based on a count map of the number of times pixels of individual slices are traversed by radiation in different projections. Weighting may also include non-uniform functions for contributions of features at different slice level to the sensed X-ray attenuation system response inconsistencies are accounted for by further weighting based upon projection maps which may be created in separate system calibration or configuration routines.
摘要翻译：提供了一种技术，用于在重构运算中的反投影计算中的不均匀加权。不均匀加权可以包括基于不同投影中的辐射遍历各个切片的像素的次数的计数图的加权。加权还可以包括用于在不同切片级别对感测的X射线衰减系统的特征贡献的不均匀的功能。通过基于可以在单独的系统校准或配置例程中创建的投影图进一步加权来解决不一致性。

4. 发明申请

US20050163278A1 Methods and apparatus for anomaly detection 有权
标题翻译：异常检测方法与装置
公开(公告)号：US20050163278A1
公开(公告)日：2005-07-28
申请号：US10766362
申请日：2004-01-28
申请人： Stephen Metz , Carson Thomas , Gopal Avinash , Jiang Hsieh
发明人： Stephen Metz , Carson Thomas , Gopal Avinash , Jiang Hsieh
IPC分类号： A61B6/03 , G21K1/12 , A61B6/00 , G01N23/00 , H05G1/60
CPC分类号： A61B6/032 , A61B6/488 , Y10S378/901
摘要： A method for detecting an anomaly includes performing a computed tomography (CT) scout scan to obtain data, and supplying the obtained data to a radiographic computer aided detection (CAD) algorithm.
摘要翻译：用于检测异常的方法包括执行计算机断层摄影（CT）侦察扫描以获得数据，并将获得的数据提供给射线照相计算机辅助检测（CAD）算法。

5. 发明申请

US20070183564A1 Method and system to generate object image slices 有权
标题翻译：生成对象图像切片的方法和系统
公开(公告)号：US20070183564A1
公开(公告)日：2007-08-09
申请号：US11345918
申请日：2006-02-02
申请人： Baojun Li , Stephen Metz , Jiang Hsieh , Yogesh Srinivas , Xianfeng Ni , Tabb Patz
发明人： Baojun Li , Stephen Metz , Jiang Hsieh , Yogesh Srinivas , Xianfeng Ni , Tabb Patz
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
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。

6. 发明申请

US20110116700A1 ADAPTIVE GRADIENT WEIGHTING TECHNIQUE FOR DETECTOR BAD CELL CORRECTION 有权
标题翻译：用于检测器BAD细胞校正的自适应梯度称重技术
公开(公告)号：US20110116700A1
公开(公告)日：2011-05-19
申请号：US13009584
申请日：2011-01-19
申请人： Baojun Li , Jiang Hsieh
发明人： Baojun Li , Jiang Hsieh
IPC分类号： G06K9/00 , G06F19/00
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。

7. 发明授权

US07310436B2 Systems, methods and apparatus for specialized filtered back-projection reconstruction for digital tomosynthesis 有权
标题翻译：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：US07310436B2
公开(公告)日：2007-12-18
申请号：US10859423
申请日：2004-06-01
申请人： Baojun Li , Steven W. Metz , John Michael Sabol , Gopal B. Avinash , Jiang Hsieh
发明人： Baojun Li , Steven W. Metz , John Michael Sabol , Gopal B. Avinash , Jiang Hsieh
IPC分类号： G06K9/00
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. The specialized filter implements a linear ramp function, a windowing function, and/or a polynomial function. 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。专用滤波器实现线性斜坡函数，加窗函数和/或多项式函数。 3D图像从经滤波的二维图像中反投影，产生3D图像，其改善了重叠解剖结构的视觉区别并减少了模糊。

8. 发明申请

US20120314928A1 SYSTEM AND METHOD OF INCREASING TEMPORAL RESOLUTION OF AN X-RAY IMAGE 有权
标题翻译：增加X射线图像的时间分辨率的系统和方法
公开(公告)号：US20120314928A1
公开(公告)日：2012-12-13
申请号：US13593156
申请日：2012-08-23
申请人： Jiang Hsieh , Roy-Arnulf Helge Nilsen , Peter Michael Edic , Bruno Kristiaan Bernard De Man , Jean-Baptiste Thibault , Baojun Li , John Lawrence Seamans
发明人： Jiang Hsieh , Roy-Arnulf Helge Nilsen , Peter Michael Edic , Bruno Kristiaan Bernard De Man , Jean-Baptiste Thibault , Baojun Li , John Lawrence Seamans
IPC分类号： G06K9/46
CPC分类号： A61B6/032 , A61B6/482 , A61B6/503 , G06T11/006 , G06T2211/412 , G06T2211/424
摘要： A system, method, and apparatus includes a computed tomography (CT) system having a rotatable gantry, an x-ray source, a generator, a detector having pixels and positioned to receive x-rays, and a computer. The computer is programmed to acquire CT data representative of an object, determine a first subset of the CT data, determine a second subset of the CT data, and determine a difference between the first and second subsets of the CT data to identify a motion region in the object. The computer is also programmed to update image data reconstructed from a first portion of the first subset of the CT data and corresponding to the region and reconstruct an image based on the updated image data and non-updated image data. The non-updated image data is reconstructed from a second portion the first subset of the CT data.
摘要翻译：系统，方法和装置包括具有可旋转机架，X射线源，发生器，具有像素并被定位成接收x射线的检测器的计算机断层摄影（CT）系统和计算机。计算机被编程为获取表示对象的CT数据，确定CT数据的第一子集，确定CT数据的第二子集，并且确定CT数据的第一和第二子集之间的差异，以识别运动区域在对象中。计算机还被编程为更新从CT数据的第一子集的第一部分重建并对应于该区域的图像数据，并且基于更新的图像数据和未更新的图像数据重建图像。从CT数据的第一子集的第二部分重构未更新的图像数据。

9. 发明申请

US20110158498A1 NOISE REDUCTION METHOD FOR DUAL-ENERGY IMAGING 有权
标题翻译：用于双能量成像的噪声减少方法
公开(公告)号：US20110158498A1
公开(公告)日：2011-06-30
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： G06K9/62
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。

10. 发明授权

US07457451B2 Systems, methods and apparatus for specialized filtered back-projection reconstruction for digital tomosynthesis 有权
标题翻译：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。

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