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1. 发明授权

US07515682B2 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：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。

2. 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。

3. 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。

4. 发明授权

US06980624B2 Non-uniform view weighting tomosynthesis method and apparatus 有权
公开(公告)号：US06980624B2
公开(公告)日：2005-12-27
申请号：US10723034
申请日：2003-11-26
申请人： Baojun Li , Bernhard Erich Hermann Claus , Gopal B. Avinash , Stephen W. Metz , Jiang Hsieh
发明人： Baojun Li , Bernhard Erich Hermann Claus , Gopal B. Avinash , Stephen W. Metz , Jiang Hsieh
IPC分类号： A61B6/02 , A61B6/03 , G06T11/00
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.

5. 发明授权

US06490334B1 Methods and apparatus for high pitch helical computed tomography image reconstruction 失效
标题翻译：高螺距螺旋计算机断层扫描图像重建方法与装置
公开(公告)号：US06490334B1
公开(公告)日：2002-12-03
申请号：US09896957
申请日：2001-06-29
申请人： Sharon X. Wang , Thomas L. Toth , Piero U. Simoni , Stephen W. Metz , Jiang Hsieh
发明人： Sharon X. Wang , Thomas L. Toth , Piero U. Simoni , Stephen W. Metz , Jiang Hsieh
IPC分类号： A61B603
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4085 , A61B6/5205 , Y10S378/901
摘要： There is therefore provided, in one aspect, a method for imaging an object utilizing a computed tomographic (CT) imaging system having a rotating gantry, a multislice detector array on the rotating gantry and using at least n>1 rows of detector channels, and a radiation source on the rotating gantry configured to project a beam of radiation towards the multislice detector array through an object to be imaged. The method includes helically scanning the object with the CT imaging system at a pitch p>n to acquire projection data from the n rows of detector channels; applying a combined helical weight and conjugate weight to at least a portion of the acquired projection data to produce virtual projection data compensating for incomplete helical row data of the acquired projection data; and reconstructing an image of the object utilizing the acquired projection data and the virtual projection data.
摘要翻译：因此，在一个方面中，提供一种利用具有旋转机架的计算机断层摄影（CT）成像系统对成像进行成像的方法，在旋转机架上使用多层检测器阵列并且至少使用n> 1行检测器通道，以及旋转台架上的辐射源被配置成通过待成像的物体将辐射束投射到多层检测器阵列。该方法包括用间距p> n的CT成像系统螺旋扫描物体，以从n行检测器通道获取投影数据; 对所获取的投影数据的至少一部分应用组合的螺旋重量和共轭权重，以产生补偿所获取的投影数据的不完整螺旋行数据的虚拟投影数据; 以及使用所获取的投影数据和虚拟投影数据来重建对象的图像。

6. 发明授权

US5907593A Image reconstruction in a CT fluoroscopy system 失效
标题翻译： CT透视系统中的图像重建
公开(公告)号：US5907593A
公开(公告)日：1999-05-25
申请号：US978802
申请日：1997-11-26
申请人： Jiang Hsieh , Stephen W. Metz , Girish Saligram , Guy M. Besson , Hui Hu , Sandeep Dutta , Robert F. Senzig , Min Xie
发明人： Jiang Hsieh , Stephen W. Metz , Girish Saligram , Guy M. Besson , Hui Hu , Sandeep Dutta , Robert F. Senzig , Min Xie
IPC分类号： A61B6/03 , G06T11/00
CPC分类号： G06T11/006 , A61B6/027 , G06T2211/421 , G06T2211/428 , Y10S378/901
摘要： A CT Fluoro system having an architecture and algorithms which facilitate increasing the frame rate and providing acceptable image quality is described. Generally, and in one embodiment, the system includes apparatus and algorithms that speed-up image reconstruction and reduce image artifacts that may result from such fast reconstruction. The fast reconstruction is achieved by performing, for example, view compression, channel compression, backprojection with reduced delay, and parallel processing.
摘要翻译：描述了具有便于增加帧速率并提供可接受的图像质量的架构和算法的CT氟系统。通常，在一个实施例中，该系统包括加速图像重构并减少可能由这种快速重建产生的图像伪像的装置和算法。通过执行例如视图压缩，信道压缩，具有减少的延迟的反投影和并行处理来实现快速重建。

7. 发明授权

US07072435B2 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：US07072435B2
公开(公告)日：2006-07-04
申请号：US10766362
申请日：2004-01-28
申请人： Stephen W. Metz , Carson Hale Thomas , Gopal B. Avinash , Jiang Hsieh
发明人： Stephen W. Metz , Carson Hale Thomas , Gopal B. Avinash , Jiang Hsieh
IPC分类号： A61B6/03
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。

8. 发明授权

US06415013B1 Backprojection methods and apparatus for computed tomography imaging systems 有权
标题翻译：计算机断层扫描成像系统的反投影方法和装置
公开(公告)号：US06415013B1
公开(公告)日：2002-07-02
申请号：US09751225
申请日：2000-12-28
申请人： Jiang Hsieh , Stephen W. Metz , Sharon X. Wang
发明人： Jiang Hsieh , Stephen W. Metz , Sharon X. Wang
IPC分类号： A61B603
CPC分类号： A61B6/032 , G06T11/006 , G06T2211/421 , Y10S378/901
摘要： There is therefore provided, in one embodiment of the present invention, a method for reconstructing a volume image of an object. The method includes steps of scanning an object with a multislice computed tomographic (CT) imaging system having a multislice detector array to acquire projection data of a volume of the object; filtering the acquired projection data; and backprojecting the filtered projection data to reconstruct voxels of the volume image. The multislice detector array has a plurality of rows and columns of detector elements and the backprojecting includes interpolating the filtered projection data across both rows and columns of the multislice detector array.
摘要翻译：因此，在本发明的一个实施例中，提供了一种用于重建物体的体积图像的方法。该方法包括用具有多层检测器阵列的多层计算机断层摄影（CT）成像系统扫描物体以获取物体体积的投影数据的步骤; 过滤所获取的投影数据; 并反过来投影过滤的投影数据以重建体积图像的体素。多层检测器阵列具有多个检测器元件的行和列，并且反向投影包括跨越多层检测器阵列的行和列的内插经滤波的投影数据。

9. 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。

10. 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。

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