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公开(公告)号：US08340373B2
公开(公告)日：2012-12-25
申请号：US11805369
申请日：2007-05-23
CPC分类号： G06T11/006
摘要： A technique is provided for generating quantitative projection images from projection images. The pixels of the quantitative projection images correspond to quantitative composition estimates of two or more materials. The quantitative projection images are reconstructed to generate a quantitative volume in which each voxel value corresponds quantitatively to the two or more materials or a mixture of the two or more materials.
摘要翻译： 提供了一种用于从投影图像生成定量投影图像的技术。 定量投影图像的像素对应于两种或更多种材料的定量组成估计。 重建定量投影图像以产生定量体积，其中每个体素值定量对应于两种或更多种材料或两种或更多种材料的混合物。
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公开(公告)号：US20080219567A1
公开(公告)日：2008-09-11
申请号：US11714969
申请日：2007-03-07
IPC分类号： G06K9/36
CPC分类号： H04N19/17 , H04N19/103 , H04N19/14 , H04N19/162 , H04N19/174 , H04N19/593
摘要： A technique and system are provided for compression of tomosynthesis imaging data. In an embodiment of the present technique, tomosynthesis imaging data may be compressed by processing a stack of tomosynthesis images such that differences between some or all of the images or estimates of the images are encoded. In another embodiment of the present technique, tomosynthesis imaging data may be compressed by differentially compressing two or more regions within the one or more tomosynthesis imaging datasets. In addition, there is provided tangible, machine readable media, with code executable to perform the acts of obtaining one or more tomosynthesis imaging datasets and compressing the one or more tomosynthesis imaging datasets using one or more compression algorithms.
摘要翻译： 提供了一种技术和系统来压缩断层摄影成像数据。 在本技术的一个实施例中，可以通过处理层叠合成图像来压缩层析融合成像数据，使得编码图像中的一些或所有图像或估计之间的差异。 在本技术的另一个实施例中，可以通过差分压缩一个或多个断层成像数据集内的两个或多个区域来压缩断层融合成像数据。 此外，提供了有形的机器可读介质，其具有可执行代码以执行获得一个或多个断层合成成像数据集的动作，并使用一个或多个压缩算法来压缩一个或多个断层合成成像数据集。
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公开(公告)号：US06987829B2
公开(公告)日：2006-01-17
申请号：US10663309
申请日：2003-09-16
IPC分类号： G01N23/083
CPC分类号： G06T11/006 , G06T2211/421 , G06T2211/436 , Y10S378/901
摘要： A method for obtaining a reconstruction of a tomographic dataset by filtering and combining the projection images, followed by a backprojection step. In one embodiment, the method can yield a reconstruction equivalent to an additive ART reconstruction, while in another embodiment the method represents a filtered back-projection type reconstruction. The computations do not require an iterative backprojection/re-projection step.
摘要翻译： 一种通过滤波和组合投影图像，随后进行反投影步骤来获得断层数据集的重构的方法。 在一个实施例中，该方法可以产生等同于加法ART重构的重构，而在另一实施例中，该方法表示经滤波的反投影型重建。 计算不需要迭代反投影/重投影步骤。
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44.发明授权Fourier based method, apparatus, and medium for optimal reconstruction in digital tomosynthesis 有权基于傅里叶的方法，装置和介质，用于数字断层合成中的最佳重建公开(公告)号：US06904121B2
公开(公告)日：2005-06-07
申请号：US10607553
申请日：2003-06-25
CPC分类号： A61B6/025 , A61B6/4028 , G01N23/04 , G06T11/006 , G06T2211/421 , G06T2211/436
摘要： A method reconstructs 3-dimensional information of an object from projection images of said object acquired by a digital tomosynthesis system having an x-ray source following a trajectory relative to the object and a detector. The method comprises determining mathematical relationships between Fourier Transforms of logical slices through the object and Fourier Transforms of projection images of the object. Moreover, a digital tomosynthesis system includes a detector and an x-ray source traversing a trajectory a constant distance from a plane containing the detector. A computer of the digital tomosynthesis system reconstructs 3-dimensional images of an object by determining mathematical relationships between Fourier Transforms of logical slices through the object with Fourier Transforms of projection images of the object.
摘要翻译： 一种方法从具有相对于物体的轨迹的x射线源的数字断层合成系统获取的所述对象的投影图像和检测器重建物体的3维信息。 该方法包括确定通过对象的逻辑片的傅立叶变换与对象的投影图像的傅里叶变换之间的数学关系。 此外，数字断层合成系统包括检测器和穿过与包含检测器的平面恒定距离的轨迹的x射线源。 数字体层合成系统的计算机通过物体的投影图像的傅里叶变换确定通过对象的逻辑片段的傅里叶变换之间的数学关系来重建对象的三维图像。
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公开(公告)号：US08798353B2
公开(公告)日：2014-08-05
申请号：US12555061
申请日：2009-09-08
CPC分类号： A61B6/025 , G06F19/00 , G06T11/006 , G06T2211/436
摘要： The invention is a directed to an apparatus for tomosynthesis imaging, wherein the apparatus comprises an x-ray source configured to irradiate an object with a beam of x-rays and a detector configured to detect the x-ray beam that passes through the object. The apparatus further comprises a computer programmed to perform a scan, wherein the scan comprises a translation of at least one of the x-ray source and the detector along a path, an acquisition of a tomosynthesis image dataset, and a reconstruction of one or more three-dimensional (3D) volumes adapted to one or more predetermined view directions, wherein at least one of the one or more predetermined view directions is aligned outside of a central view direction.
摘要翻译： 本发明涉及一种用于层析融合成像的装置，其中该装置包括被配置为用X射线束照射物体的x射线源和被配置为检测通过物体的x射线束的检测器。 所述装置还包括被编程为执行扫描的计算机，其中所述扫描包括沿着路径的X射线源和检测器中的至少一个的平移，采集层析合成图像数据集，以及重建一个或多个 适于一个或多个预定视图方向的三维（3D）体积，其中所述一个或多个预定视图方向中的至少一个在中心视图方向外对齐。
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公开(公告)号：US08038347B2
公开(公告)日：2011-10-18
申请号：US11962660
申请日：2007-12-21
CPC分类号： A61B5/6887 , A61B5/02 , A61B5/04 , A61B5/145 , A61B5/14532 , A61B6/025 , A61B6/032 , A61B6/0442 , A61B6/08 , A61B6/4028 , A61B6/4233 , A61B6/4283 , A61B6/4405 , A61B6/4441 , A61B6/5241 , A61B6/541 , A61B6/583 , A61B2562/17
摘要： An imaging system includes a portable litter including a structural housing and a digital detector positioned in the structural housing to detect X-ray signals corresponding to a region of interest to be imaged. The imaging system further includes at least one X-ray source for generating the X-ray signals, the at least one X-ray source positioned above the portable litter on an open gantry arrangement and configured to generate X-rays from different focal spot locations.
摘要翻译： 成像系统包括便携式垃圾，其包括结构外壳和位于结构外壳中的数字检测器，以检测对应于要成像的感兴趣区域的X射线信号。 所述成像系统还包括用于产生X射线信号的至少一个X射线源，所述至少一个X射线源位于便携式垃圾上方，位于开放式台架装置上方，并被配置为从不同焦点位置产生X射线 。
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公开(公告)号：US20110142313A1
公开(公告)日：2011-06-16
申请号：US12638693
申请日：2009-12-15
申请人： Jed Douglas Pack , Peter Michael Edic , Bernhard Erich Hermann Claus , Maria Iatrou , James Vradenburg Miller
发明人： Jed Douglas Pack , Peter Michael Edic , Bernhard Erich Hermann Claus , Maria Iatrou , James Vradenburg Miller
CPC分类号： G06T11/005 , G06T7/11 , G06T7/174 , G06T7/246 , G06T2207/10081 , G06T2207/30048 , G06T2207/30101 , G06T2207/30172 , G06T2211/412
摘要： A method and system for motion estimation and compensation are disclosed. Initially, a set of one or more initial images is reconstructed using acquired imaging data. Further, one or more regions of interest are identified in this set of reconstructed initial images. At least a set of filters is applied to the identified regions of interest to generate a sequence of filtered images. Particularly, each of the filtered images in the generated sequence of filtered images includes data acquired near a different reference point. Subsequently, a motion path corresponding to each region of interest is determined based on one or more correspondences in the sequence of filtered images.
摘要翻译： 公开了一种用于运动估计和补偿的方法和系统。 最初，使用获取的成像数据重建一组一个或多个初始图像。 此外，在该组重建的初始图像中识别一个或多个感兴趣区域。 至少一组滤波器被应用于所识别的感兴趣区域以产生滤波图像序列。 特别地，所生成的滤波图像序列中的每个滤波图像包括在不同参考点附近获取的数据。 随后，基于滤波图像的序列中的一个或多个对应来确定对应于每个感兴趣区域的运动路径。
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公开(公告)号：US20110058724A1
公开(公告)日：2011-03-10
申请号：US12555061
申请日：2009-09-08
CPC分类号： A61B6/025 , G06F19/00 , G06T11/006 , G06T2211/436
摘要： The invention is a directed to an apparatus for tomosynthesis imaging, wherein the apparatus comprises an x-ray source configured to irradiate an object with a beam of x-rays and a detector configured to detect the x-ray beam that passes through the object. The apparatus further comprises a computer programmed to perform a scan, wherein the scan comprises a translation of at least one of the x-ray source and the detector along a path, an acquisition of a tomosynthesis image dataset, and a reconstruction of one or more three-dimensional (3D) volumes adapted to one or more predetermined view directions, wherein at least one of the one or more predetermined view directions is aligned outside of a central view direction.
摘要翻译： 本发明涉及一种用于层析融合成像的装置，其中该装置包括被配置为用X射线束照射物体的x射线源和被配置为检测通过物体的x射线束的检测器。 所述装置还包括被编程为执行扫描的计算机，其中所述扫描包括沿着路径的X射线源和检测器中的至少一个的平移，采集层析合成图像数据集以及重建一个或多个 适于一个或多个预定视图方向的三维（3D）体积，其中所述一个或多个预定视图方向中的至少一个在中心视图方向外对齐。
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公开(公告)号：US06862337B2
公开(公告)日：2005-03-01
申请号：US10607569
申请日：2003-06-25
IPC分类号： G21K5/02 , A61B6/02 , G01T1/00 , G01N23/083
CPC分类号： A61B6/025 , A61B6/027 , A61B6/4028
摘要： A digital tomosynthesis system acquires a plurality of projection radiographs of an object and reconstructs structures of the object based on the acquired projection radiographs. The digital tomosynthesis system includes an x-ray source and a detector. The x-ray source emits a beam of x-rays, and moves in a linear trajectory relative to the detector.
摘要翻译： 数字体层合成系统获取对象的多个投影射线照片，并且基于获取的投影射线照片重建对象的结构。 数字断层合成系统包括X射线源和检测器。 x射线源发射一束x射线，并相对于检测器以线性轨迹移动。
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公开(公告)号：US06633626B2
公开(公告)日：2003-10-14
申请号：US10062338
申请日：2002-02-01
IPC分类号： A61B600
CPC分类号： A61B6/00 , A61B6/502 , A61B6/5282 , A61B6/583 , G01N23/04
摘要： A method for removing scatter in an image includes acquiring data of an object of interest, and using an iterative equation including a thickness-dependent kernel modulation factor to reconstruct an image of the object.
摘要翻译： 一种用于去除图像中的散射的方法包括获取感兴趣对象的数据，并使用包括依赖于厚度的内核调制因子的迭代方程来重建对象的图像。
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