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1. 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。

2. 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。

3. 发明授权

US07013034B2 Methods and apparatus for reconstructing an image of an object 失效
标题翻译：用于重建物体的图像的方法和装置
公开(公告)号：US07013034B2
公开(公告)日：2006-03-14
申请号：US10268323
申请日：2002-10-10
申请人： Sharon X. Wang , Thomas L. Toth , Piero U. Simoni , Stephen W. Metz
发明人： Sharon X. Wang , Thomas L. Toth , Piero U. Simoni , Stephen W. Metz
IPC分类号： G06K9/00
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4085 , G06T11/005
摘要： A method for reconstructing an image of an object utilizing a computed tomographic (CT) imaging system having a radiation source configured to project a beam of radiation through an object and towards a multislice detector array configured to sense attenuation of the radiation passing through the object; the method includes helically scanning an object to acquire a plurality of slices of projection data, generating a separate projection dataset for each of N separate detector rows wherein the separate projection datasets include detector row projection data and detector row conjugate projection data, combining the detector row projection data and the detector row conjugate projection data, and helically weighting the combined projection data using a combined helical weighting and conjugate data weighting algorithm such that a greater weight is applied to combined center row projection data than to at least one outermost detector row projection data.
摘要翻译：一种用于使用计算机断层摄影（CT）成像系统来重建物体的图像的方法，所述计算机断层摄影（CT）成像系统具有被配置成将辐射束投射穿过物体并朝向被配置为感测穿过物体的辐射的衰减的多层检测器阵列投影的辐射源; 该方法包括螺旋扫描对象以获取多个投影数据片段，为N个单独检测器行中的每一个生成单独的投影数据集，其中分离的投影数据集包括检测器行投影数据和检测器行共轭投影数据，组合检测器行投影数据和检测器行共轭投影数据，并且使用组合的螺旋加权和共轭数据加权算法对组合的投影数据进行螺旋加权，使得对组合的中心行投影数据施加更大的权重，而不是至少一个最外检测器行投影数据。

4. 发明授权

US06418184B1 Helical rowwise view weighting of computed tomographic images 失效
标题翻译：计算机断层图像的螺旋横向视图加权
公开(公告)号：US06418184B1
公开(公告)日：2002-07-09
申请号：US09752275
申请日：2000-12-29
申请人： Sharon X. Wang , Stephen W. Metz , John A. Fusco
发明人： Sharon X. Wang , Stephen W. Metz , John A. Fusco
IPC分类号： A61B603
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4085 , Y10S378/901
摘要： One aspect of the present invention is a method for reconstructing an image of an object utilizing a computed tomographic (CT) imaging system. The method includes steps of: helically scanning an object; interpolating an axial fan beam set of projection data as a vector function {right arrow over (R)}a from a fan beam set of projection data from the helical scan {right arrow over (R)}hi, where i=1, . . . , n is a row index and n represents a of number of rows of the detector array, using a relationship written as: R → a ⁢ ( β , γ ) = ∑ i = 1 n ⁢ w i ⁢ ( β ) ⁢ R → h i ⁢ ( β , γ ) , where wi(&bgr;) is a weighting function written as: w i = ∑ j = 1 m ⁢ f ⁢ ⁢ ( β - β j ) , where m is a number of images used for z smoothing, &bgr;j is a gantry rotation angle for a plane of reconstrution of a jth image, and f ⁢ ⁢ ( x ) = { g ⁢ ⁢ ( x ) , &LeftBracketingBar; x &RightBracketingBar; ≤ β b 0 , &LeftBracketingBar; x &RightBracketingBar; > β b where constants β b = 2 ⁢ ⁢ π p , and g(x) is either a linear or non-linear function.
摘要翻译：本发明的一个方面是使用计算机断层摄影（CT）成像系统来重建物体的图像的方法。该方法包括以下步骤：螺旋扫描物体; 将来自螺旋扫描的投影数据的扇形波束组（（R）} hi的右箭头，hi，其中i = 1，...）插入作为向量函数{（R）} a的右箭头的矢量函数的轴向扇形波束组。。。，n是行索引，n表示检测器阵列的行数，使用写为：其中wi（β）是写入的加权函数，其中m是用于z平滑的图像的数量，betaj 是第j个图像重构平面的机架旋转角，其中常数和g（x）是线性或非线性函数。

5. 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。

6. 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。

7. 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.

8. 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。

9. 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。

10. 发明申请

US20100082506A1 Active Electronic Medical Record Based Support System Using Learning Machines 审中-公开
标题翻译：基于电子病历的基于学习机的支持系统
公开(公告)号：US20100082506A1
公开(公告)日：2010-04-01
申请号：US12242319
申请日：2008-09-30
申请人： Gopal B. Avinash , Suresh K. Choubcy , Saad Ahmed Sirohey , Stephen W. Metz , David M. Deaven , Michael J. Barber
发明人： Gopal B. Avinash , Suresh K. Choubcy , Saad Ahmed Sirohey , Stephen W. Metz , David M. Deaven , Michael J. Barber
IPC分类号： G06F15/18
CPC分类号： G06Q10/10 , A61B5/0002 , A61B5/055 , A61B5/7267 , A61B6/032 , A61B6/56 , G06F19/321 , G16H40/63 , G16H50/20
摘要： A data processing technique is provided. In one embodiment, a computer-implemented method includes receiving image data from an imaging system and organizing the image data into multiple objects of interest. The method may also include identifying source-invariant features of the multiple objects of interest and classifying the multiple objects of interest via a learning algorithm into categories based, at least in part, on the identified source-invariant features. Further, the method may include outputting a report based at least in part on data derived from the classification of one or more of the multiple objects of interest. Additional methods, systems, and devices are also disclosed.
摘要翻译：提供了一种数据处理技术。在一个实施例中，计算机实现的方法包括从成像系统接收图像数据并将图像数据组织成多个感兴趣对象。该方法还可以包括识别多个感兴趣对象的源不变特征，并且至少部分地基于所识别的源不变特征，通过学习算法将多个感兴趣对象分类成类别。此外，该方法可以包括至少部分地基于从多个感兴趣对象中的一个或多个的分类导出的数据来输出报告。还公开了附加的方法，系统和装置。

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