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    System and method of optimizing a representation of dual energy spectral CT images
    1.
    发明授权
    System and method of optimizing a representation of dual energy spectral CT images 有权
    优化双能谱CT图像表示的系统和方法

    公开(公告)号：US08787519B2

    公开(公告)日：2014-07-22

    申请号：US13174825

    申请日：2011-07-01

    申请人： Jiahua Fan ,  Naveen Chandra ,  Bruno Kristiaan Bernard De Man

    发明人： Jiahua Fan ,  Naveen Chandra ,  Bruno Kristiaan Bernard De Man

    IPC分类号： A61B6/03 ,  A61B6/00

    CPC分类号： A61B6/482 ,  A61B6/032 ,  A61B6/4241 ,  A61B6/5258

    摘要： An imaging system includes an x-ray source, a detector, a data acquisition system (DAS) operably connected to the detector, and a computer operably connected to the DAS. The computer is programmed to obtain CT scan data with two or more incident energy spectra, decompose the obtained CT scan data into projection CT data of a first basis material and a second basis material, generate a first basis material image and a second basis material image using the decomposed projection CT data, generate a first monochromatic image from the first basis material image and the second basis material image at a first energy that is selected based on an amount of correlated noise at the first energy, noise-reduce the first monochromatic image to generate a noise-reduced first monochromatic image, and generate a final monochromatic image based at least on the noise-reduced first monochromatic image.

    摘要翻译： 成像系统包括可操作地连接到检测器的X射线源，检测器，数据采集系统（DAS）以及可操作地连接到DAS的计算机。 计算机被编程以获得具有两个或更多个入射能谱的CT扫描数据，将获得的CT扫描数据分解成第一基材和第二基材的投影CT数据，生成第一基材图像和第二基材图像 使用分解的投影CT数据，以基于第一能量处的相关噪声量选择的第一能量从第一基材图像和第二基材图像生成第一单色图像，降低第一单色图像 以产生噪声减小的第一单色图像，并且至少基于噪声减小的第一单色图像生成最终单色图像。

    SYSTEM AND METHOD OF OPTIMIZING A REPRESENTATION OF DUAL ENERGY SPECTRAL CT IMAGES
    2.
    发明申请
    SYSTEM AND METHOD OF OPTIMIZING A REPRESENTATION OF DUAL ENERGY SPECTRAL CT IMAGES 有权
    优化双能谱图像的系统和方法

    公开(公告)号：US20120039440A1

    公开(公告)日：2012-02-16

    申请号：US13174825

    申请日：2011-07-01

    申请人： Jiahua Fan ,  Naveen Chandra ,  Bruno Kristiaan Bernard De Man

    发明人： Jiahua Fan ,  Naveen Chandra ,  Bruno Kristiaan Bernard De Man

    IPC分类号： G01N23/04

    CPC分类号： A61B6/482 ,  A61B6/032 ,  A61B6/4241 ,  A61B6/5258

    摘要： An imaging system includes an x-ray source, a detector, a data acquisition system (DAS) operably connected to the detector, and a computer operably connected to the DAS. The computer is programmed to obtain CT scan data with two or more incident energy spectra, decompose the obtained CT scan data into projection CT data of a first basis material and a second basis material, generate a first basis material image and a second basis material image using the decomposed projection CT data, generate a first monochromatic image from the first basis material image and the second basis material image at a first energy that is selected based on an amount of correlated noise at the first energy, noise-reduce the first monochromatic image to generate a noise-reduced first monochromatic image, and generate a final monochromatic image based at least on the noise-reduced first monochromatic image.

    摘要翻译： 成像系统包括可操作地连接到检测器的X射线源，检测器，数据采集系统（DAS）以及可操作地连接到DAS的计算机。 计算机被编程以获得具有两个或更多个入射能谱的CT扫描数据，将获得的CT扫描数据分解成第一基材和第二基材的投影CT数据，生成第一基材图像和第二基材图像 使用分解的投影CT数据，以基于第一能量处的相关噪声量选择的第一能量从第一基材图像和第二基材图像生成第一单色图像，降低第一单色图像 以产生噪声减小的第一单色图像，并且至少基于噪声减小的第一单色图像生成最终单色图像。

    System and method for material decomposition optimization in image domain
    3.
    发明授权
    System and method for material decomposition optimization in image domain 有权
    图像域中物质分解优化的系统和方法

    公开(公告)号：US08588494B2

    公开(公告)日：2013-11-19

    申请号：US12915195

    申请日：2010-10-29

    申请人： Bruno Kristiaan Bernard De Man ,  Jiang Hsieh ,  Naveen Chandra ,  Jed Douglas Pack ,  Jiahua Fan

    发明人： Bruno Kristiaan Bernard De Man ,  Jiang Hsieh ,  Naveen Chandra ,  Jed Douglas Pack ,  Jiahua Fan

    IPC分类号： G06K9/00 ,  A61B6/00 ,  G01N23/00 ,  G21K1/12 ,  H05G1/60

    CPC分类号： H04B1/1638 ,  G06T11/008 ,  G06T2211/408

    摘要： A system and method for material decomposition optimization in the image domain include a non-transitory computer readable medium has stored thereon a sequence of instructions which, when executed by a computer, causes the computer to access a reconstructed basis material image. For a first voxel of the reconstructed basis material image, the instructions also cause the computer to optimize a concentration of a pair of materials (a,b) in the first voxel exclusively in the image domain and based on a first probability based on random perturbations and a second probability based on random perturbations. The optimization is further based on a third probability based on known materials and a fourth probability based on concentrations of the pair of materials in a pair of voxels neighboring the first voxel.

    摘要翻译： 用于图像域中的材料分解优化的系统和方法包括其上存储有一系列指令的非瞬时计算机可读介质，所述指令序列当由计算机执行时使计算机访问重建的基础材料图像。 对于重建的基材图像的第一体素，指令还使计算机优化仅在图像域中的第一体素中的一对材料（a，b）的浓度，并且基于基于随机扰动的第一概率 和基于随机扰动的第二概率。 优化进一步基于基于已知材料的第三概率和基于邻近第一体素的一对体素中的该对材料对的浓度的第四概率。

    SYSTEM AND METHOD OF ACQUIRING COMPUTED TOMOGRAPHY DATA USING A MULTI-ENERGY X-RAY SOURCE
    5.
    发明申请
    SYSTEM AND METHOD OF ACQUIRING COMPUTED TOMOGRAPHY DATA USING A MULTI-ENERGY X-RAY SOURCE 审中-公开
    使用多能量X射线源获取计算机图像数据的系统和方法

    公开(公告)号：US20130003912A1

    公开(公告)日：2013-01-03

    申请号：US13174485

    申请日：2011-06-30

    申请人： Bruno Kristiaan Bernard De Man ,  Jiang Hsieh ,  Naveen Stephan Chandra ,  Jiahua Fan ,  Jed Douglas Pack

    发明人： Bruno Kristiaan Bernard De Man ,  Jiang Hsieh ,  Naveen Stephan Chandra ,  Jiahua Fan ,  Jed Douglas Pack

    IPC分类号： A61B6/03 ,  G01N23/04

    CPC分类号： A61B6/482 ,  A61B6/032 ,  A61B6/405

    摘要： The subject matter disclosed herein relates to X-ray imaging systems, and more specifically, to multi-energy computed tomography (CT) X-ray imaging systems. In an embodiment, a multi-energy computed tomography (CT) imaging system includes an X-ray source that emits X-rays upon the application of a low stable bias, a high stable bias, and transitional biases between the low stable bias and the high stable bias. The imaging system also includes an X-ray detector configured to produce an electrical signal corresponding to the intensity of the X-rays emitted by the X-ray source that reach the X-ray detector. The imaging system also includes data processing circuitry configured to acquire a first set of data corresponding to the electrical signal produced by the X-ray detector only when the low stable bias or the high stable bias is applied to the X-ray source. The imaging system also includes a processor configured to process the first set of acquired data and construct one or more multi-energy CT images.

    摘要翻译： 本文公开的主题涉及X射线成像系统，更具体地，涉及多能计算机断层摄影（CT）X射线成像系统。 在一个实施例中，多能量计算机断层摄影（CT）成像系统包括在施加低稳定偏压，高稳定偏差以及低稳定偏压和低稳定偏差之间的过渡偏差时发射X射线的X射线源 高稳定偏差。 成像系统还包括：X射线检测器，被配置为产生对应于由X射线源发射的X射线的强度的电信号，该X射线到达X射线检测器。 成像系统还包括数据处理电路，其被配置为仅当低稳定偏压或高稳定偏压施加到X射线源时才获取对应于由X射线检测器产生的电信号的第一组数据。 成像系统还包括被配置为处理第一组获取的数据并构造一个或多个多能CT图像的处理器。

    SYSTEM AND METHOD OF NOTCH FILTRATION FOR DUAL ENERGY CT
    7.
    发明申请
    SYSTEM AND METHOD OF NOTCH FILTRATION FOR DUAL ENERGY CT 有权
    双能量CT的盲孔过滤系统及方法

    公开(公告)号：US20120069953A1

    公开(公告)日：2012-03-22

    申请号：US12887584

    申请日：2010-09-22

    申请人： Naveen Chandra ,  Bruno Kristiaan Bernard De Man

    发明人： Naveen Chandra ,  Bruno Kristiaan Bernard De Man

    IPC分类号： A61B6/03 ,  G01N23/04

    CPC分类号： A61B6/03 ,  A61B6/06 ,  A61B6/4035 ,  A61B6/4042 ,  A61B6/4435 ,  A61B6/482 ,  G21K1/10

    摘要： An imaging system includes an x-ray source that emits a beam of x-rays toward an object to be imaged, a detector that receives the x-rays attenuated by the object, a spectral notch filter positioned between the x-ray source and the object, a data acquisition system (DAS) operably connected to the detector, and a computer operably connected to the DAS and programmed to acquire a first image dataset at a first kVp, acquire a second image dataset at a second kVp that is greater than the first kVp, and generate an image of the object using the first image dataset and the second image dataset.

    摘要翻译： 成像系统包括：x射线源，其向待成像物体发射X射线束;接收被物体衰减的x射线的检测器;定位在x射线源和 对象，可操作地连接到检测器的数据采集系统（DAS）和可操作地连接到DAS并被编程为在第一kVp获取第一图像数据集的计算机，在第二个kVp处获取第二个图像数据集，该第二个kVp大于 并且使用第一图像数据集和第二图像数据集生成对象的图像。

    System and method of notch filtration for dual energy CT
    8.
    发明授权
    System and method of notch filtration for dual energy CT 有权
    双能量CT的陷波过滤系统及方法

    公开(公告)号：US08311182B2

    公开(公告)日：2012-11-13

    申请号：US12887584

    申请日：2010-09-22

    申请人： Naveen Chandra ,  Bruno Kristiaan Bernard De Man

    发明人： Naveen Chandra ,  Bruno Kristiaan Bernard De Man

    IPC分类号： A61B6/00 ,  G06K9/00

    CPC分类号： A61B6/03 ,  A61B6/06 ,  A61B6/4035 ,  A61B6/4042 ,  A61B6/4435 ,  A61B6/482 ,  G21K1/10

    摘要： An imaging system includes an x-ray source that emits a beam of x-rays toward an object to be imaged, a detector that receives the x-rays attenuated by the object, a spectral notch filter positioned between the x-ray source and the object, a data acquisition system (DAS) operably connected to the detector, and a computer operably connected to the DAS and programmed to acquire a first image dataset at a first kVp, acquire a second image dataset at a second kVp that is greater than the first kVp, and generate an image of the object using the first image dataset and the second image dataset.

    摘要翻译： 成像系统包括：x射线源，其向待成像物体发射X射线束;接收被物体衰减的x射线的检测器;定位在x射线源和 对象，可操作地连接到检测器的数据采集系统（DAS）和可操作地连接到DAS并被编程为在第一kVp获取第一图像数据集的计算机，在第二个kVp处获取第二个图像数据集，该第二个kVp大于 并且使用第一图像数据集和第二图像数据集生成对象的图像。