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51. 发明授权

US07092558B2 Automated optimization of medical 3D visualizations 有权
标题翻译：医疗3D可视化的自动优化
公开(公告)号：US07092558B2
公开(公告)日：2006-08-15
申请号：US10064762
申请日：2002-08-14
申请人： Jiang Hsieh
发明人： Jiang Hsieh
IPC分类号： G06K9/00
CPC分类号： G06T15/06 , G06T15/40
摘要： A method of automatically optimizing medical three-dimensional visualizations is providing, including isolating a plurality of anatomical structures within the medical three-dimensional visualization (40), calculating the number of ray intersects, that intersect more than one of the plurality of anatomical structures, for a plurality of casting angles (42), selecting an optimum casting angle that minimizes said ray intersects from one of said plurality casting angles (44), and displaying the optimized medical three-dimensional visualization from said optimized casting angle (48).
摘要翻译：自动优化医学三维可视化的方法是提供包括隔离医疗三维可视化（40）内的多个解剖结构，计算与多个解剖结构之一相交的多个光线相交的数量，对于多个铸造角度（42），选择使所述射线最小化的最佳铸造角度与所述多个铸造角度（44）中的一个相交，并且从所述优化的铸造角度（48）显示优化的医疗三维可视化。

52. 发明授权

US07076029B2 Method and apparatus of radiographic imaging with an energy beam tailored for a subject to be scanned 有权
公开(公告)号：US07076029B2
公开(公告)日：2006-07-11
申请号：US10605789
申请日：2003-10-27
申请人： Thomas L. Toth , Eric J. Tkaczyk , Jiang Hsieh
发明人： Thomas L. Toth , Eric J. Tkaczyk , Jiang Hsieh
IPC分类号： G21K3/00 , A61B6/03
CPC分类号： A61B6/4042 , A61B6/032 , A61B6/4035 , A61B6/4488 , G01T1/2985 , G21K1/04 , G21K1/10
摘要： A method and apparatus for tailoring the profile of an x-ray beam for radiographic imaging for a specific subject is disclosed. The invention includes a filter assembly having a pair of filters, each of which may be dynamically controlled by a motor assembly during data acquisition. The filters are positionable in the x-ray beam so as to shape the intensity profile of the x-ray beam. In one exemplary embodiment, the filters are dynamically positioned during CT data acquisition based on the shape of the subject. A method of determining the shape of the subject prior to CT data acquisition is also disclosed.

53. 发明申请

US20060104409A1 Methods, apparatus, and software for reconstructing an image 有权
公开(公告)号：US20060104409A1
公开(公告)日：2006-05-18
申请号：US10991176
申请日：2004-11-17
申请人： Charles Bouman , Ken Sauer , Jiang Hsieh , Jean-Baptiste Thibault
发明人： Charles Bouman , Ken Sauer , Jiang Hsieh , Jean-Baptiste Thibault
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： G06T11/005 , A61B6/027 , A61B6/032 , A61B6/4085 , Y10S378/901
摘要： A method of reconstructing an image includes substantially minimizing a cost function of the form x ^ = arg ⁢ ⁢ min x ⁢ { ∑ m = 0 M ⁢ ⁢ D m ⁡ ( y m , F m ⁡ ( x ) ) + S ⁡ ( x ) } , where {circumflex over (x)} is the value of x which achieves the minimum summation, ym is an integral projection, Fm(x) is an forward projection function, and S(x) is a stabilizing function, to obtain {circumflex over (x)}, and using the obtained {circumflex over (x)} to perform a multislice Computed Tomography (CT) reconstruction to generate an image.

54. 发明申请

US20060104408A1 Methods, apparatus, and software to facilitate computing the elements of a forward projection matrix 有权
标题翻译：方法，装置和软件，以便于计算前向投影矩阵的元素
公开(公告)号：US20060104408A1
公开(公告)日：2006-05-18
申请号：US10990795
申请日：2004-11-17
申请人： Jean-Baptiste Thibault , Ken Sauer , Charles Bouman , Jiang Hsieh
发明人： Jean-Baptiste Thibault , Ken Sauer , Charles Bouman , Jiang Hsieh
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： G06T11/006 , A61B6/027 , A61B6/032 , A61B6/4085 , G06T2211/424 , Y10S378/901
摘要： A method for calculating an element of a projection includes calculating an element Ai,j of a projection matrix using at least two different rays through a voxel.
摘要翻译：用于计算投影的元素的方法包括使用通过体素的至少两个不同的光线来计算投影矩阵的元素A i，j i。

55. 发明申请

US20060083345A1 Method and apparatus for reconstruction of tilted cone beam data 有权
标题翻译：用于重建倾斜锥形束数据的方法和装置
公开(公告)号：US20060083345A1
公开(公告)日：2006-04-20
申请号：US10966415
申请日：2004-10-15
申请人： Jiang Hsieh , Xiangyang Tang
发明人： Jiang Hsieh , Xiangyang Tang
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： G06T11/006 , A61B6/027 , A61B6/4447 , G06T11/005
摘要： A method for reconstructing tilted cone beam data acquired using a CT apparatus. The CT apparatus has a gantry and a table. The gantry has an x-ray source and a detector array with columns and rows. The gantry is tilted at a gantry tilt angle with respect to the table and a plurality of projection data is acquired using the CT apparatus. Fan-parallel rebinning is performed on a row by row basis to form a plurality of reconstructed pixels. The coordinate locations of the plurality of reconstructed pixels are adjusted based on the gantry tilt angle and used to form a reconstructed image.
摘要翻译：一种用于重建使用CT装置获取的倾斜锥形束数据的方法。 CT装置具有龙门架和桌子。台架具有x射线源和具有列和行的检测器阵列。台架以相对于工作台的台架倾斜角度倾斜，并且使用CT装置获取多个投影数据。以逐行为基础进行风扇平行重组以形成多个重构像素。基于台架倾斜角来调整多个重建像素的坐标位置，并用于形成重构图像。

56. 发明授权

US07031425B2 Methods and apparatus for generating CT scout images 失效
标题翻译：用于生成CT侦察图像的方法和装置
公开(公告)号：US07031425B2
公开(公告)日：2006-04-18
申请号：US10306053
申请日：2002-11-27
申请人： Jiang Hsieh , Robert F. Senzig , Priya Gopinath , Kelly Lynn Karau
发明人： Jiang Hsieh , Robert F. Senzig , Priya Gopinath , Kelly Lynn Karau
IPC分类号： G01N23/087
CPC分类号： A61B6/488 , A61B6/022 , A61B6/032 , A61B6/4035 , A61B6/405 , A61B6/4241 , A61B6/482
摘要： A method for obtaining data includes acquiring Computed Tomography (CT) scout data at a Z location with a first x-ray spectrum, and acquiring CT scout data at the Z with a second x-ray spectrum different from the first x-ray spectrum.
摘要翻译：一种用于获得数据的方法包括：在具有第一x射线光谱的Z位置获取计算机断层扫描（CT）侦察数据，以及以不同于第一x射线光谱的第二X射线光谱在Z处获取CT侦察数据。

57. 发明授权

US06996206B2 Method, system and storage medium for reference normalization for blocked reference channels 失效
标题翻译：阻塞参考通道的参考标准化方法，系统和存储介质
公开(公告)号：US06996206B2
公开(公告)日：2006-02-07
申请号：US10709080
申请日：2004-04-12
申请人： Jiang Hsieh , Jean-Baptiste Thibault , Fang Frank Dong , Jian ying Li , Edward Chao , Scott Matt McOlash
发明人： Jiang Hsieh , Jean-Baptiste Thibault , Fang Frank Dong , Jian ying Li , Edward Chao , Scott Matt McOlash
IPC分类号： A61B6/03
CPC分类号： A61B6/583 , A61B6/032 , A61B6/585
摘要： A method for performing reference normalization for an image created by an imaging system. The imaging system includes a radiation detector array with a right and left edge. The method includes receiving a projection dataset created by the imaging system in response to a varying x-ray tube current. The projection dataset includes a view and predicted fluxes are calculated for the set of reference channels within the view. A right set of reference channels are located proximate at the right edge of the detector array and a left set of reference channels are located proximate to the left edge of the detector array. The method also includes calculating average actual fluxes for the sets of reference channels. Based on the predicted reference fluxes and the average fluxes, a reference correction value for the view is determined. The correction value is applied for the reference correction of the view.
摘要翻译：一种用于对由成像系统创建的图像执行参考归一化的方法。成像系统包括具有左右边缘的辐射检测器阵列。该方法包括响应于变化的X射线管电流接收由成像系统创建的投影数据集。投影数据集包括视图，并且为视图内的参考通道集合计算预测通量。参考通道的右侧集合位于检测器阵列的右边缘附近，并且左组参考通道位于检测器阵列的左边缘附近。该方法还包括计算参考通道组的平均实际通量。基于预测的参考通量和平均通量，确定视图的参考校正值。校正值被应用于视图的参考校正。

58. 发明授权

US06980681B1 Methods and apparatus for helical reconstruction for multislice CT scan 失效
标题翻译：用于多层CT扫描的螺旋重建的方法和装置
公开(公告)号：US06980681B1
公开(公告)日：2005-12-27
申请号：US09557108
申请日：2000-04-24
申请人： Jiang Hsieh
发明人： Jiang Hsieh
IPC分类号： A61B6/03 , G01N23/04 , G06T1/00 , G06T11/00 , G06K9/00
CPC分类号： A61B6/032 , A61B6/027 , G01N23/046 , G01N2223/419 , G01N2223/612 , G06T11/006 , G06T2211/421
摘要： One embodiment of the present invention is a method for imaging an object with a computed tomographic (CT) imaging system that includes steps of helically scanning the object with a multi-slice CT imaging system to acquire attenuation measurements of the object, the measurements including more than two conjugate samples for estimation of a projection at a plane of reconstruction of the object; and filtering and backprojecting the attenuation measurements of the object, including the more than two conjugate samples, to reconstruct at least one image slice of the object. An improved sampling pattern and better use of the attenuation samples obtained during a scan is thus provided.
摘要翻译：本发明的一个实施例是一种用计算机断层摄影（CT）成像系统对物体进行成像的方法，所述计算机断层摄影（CT）成像系统包括用多层CT成像系统螺旋扫描物体以获取物体的衰减测量的步骤，所述测量包括更多比用于估计物体重建平面处的投影的两个共轭样本; 并且对包括多于两个共轭样本的对象的衰减测量进行滤波和反投影来重建对象的至少一个图像切片。因此提供了在扫描期间获得的衰减样本的改进的采样模式和更好的使用。

59. 发明申请

US20050201605A1 Methods and apparatus for CT smoothing to reduce artifacts 审中-公开
标题翻译：用于CT平滑减少伪像的方法和装置
公开(公告)号：US20050201605A1
公开(公告)日：2005-09-15
申请号：US10798650
申请日：2004-03-11
申请人： Jianying Li , Jiang Hsieh
发明人： Jianying Li , Jiang Hsieh
IPC分类号： G06K9/00
CPC分类号： G06T11/005 , A61B6/027 , G06T11/003 , G06T2211/421
摘要： A method for reconstructing an image of an object includes scanning an object using a computed tomographic (CT) imaging apparatus to acquire projections of the object. A set of thresholds are determined utilizing the projections, and selected smoothing kernels are associated with the thresholds. The method further includes utilizing the smoothing kernels and the projections to produce smoothed projections in accordance with the thresholds and filtering and backprojecting the smoothed projections to generate an image of the object.
摘要翻译：用于重建对象的图像的方法包括使用计算机断层摄影（CT）成像设备扫描对象以获取对象的投影。使用投影来确定一组阈值，并且所选择的平滑内核与阈值相关联。该方法还包括利用平滑内核和投影来根据阈值产生平滑的投影，并过滤和反投影平滑的投影以生成对象的图像。

60. 发明授权

US06944260B2 Methods and apparatus for artifact reduction in computed tomography imaging systems 有权
标题翻译：计算机断层成像系统中神经减少的方法和装置
公开(公告)号：US06944260B2
公开(公告)日：2005-09-13
申请号：US10705357
申请日：2003-11-11
申请人： Jiang Hsieh , Edward Henry Chao , Brian James Grekowicz , Jean-Baptiste Thibault
发明人： Jiang Hsieh , Edward Henry Chao , Brian James Grekowicz , Jean-Baptiste Thibault
IPC分类号： A61B6/03 , G06T11/00
CPC分类号： A61B6/032 , A61B6/027 , A61B6/583 , G06T11/005 , G06T11/006 , Y10S378/901
摘要： Some configurations of the present invention provide a method for reconstructing an image of an object of a computed tomographic imaging system having a detector array and a radiation source, wherein an arc of the detector array is not concentric to a focal spot of the radiation source. The method includes scanning the object with the computed tomographic imaging system to obtain a fan beam dataset, rebinning the fan beam dataset into a set of parallel datasets; and reconstructing an image utilizing the set of parallel datasets.
摘要翻译：本发明的一些配置提供了一种用于重建具有检测器阵列和辐射源的计算机断层成像系统的物体的图像的方法，其中检测器阵列的弧不与辐射源的焦斑同心。该方法包括用计算机断层成像系统扫描物体以获得风扇光束数据集，将风扇光束数据集重新组合成一组并行数据集; 并使用该组并行数据集重构图像。

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