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    Correlation-based motion estimation of object to be imaged
    2.
    发明授权
    Correlation-based motion estimation of object to be imaged 有权
    要成像的物体的相关运动估计

    公开(公告)号：US07587022B1

    公开(公告)日：2009-09-08

    申请号：US11277243

    申请日：2006-03-23

    申请人： Jiang Hsieh ,  Yuchuan Wei ,  Ge Wang

    发明人： Jiang Hsieh ,  Yuchuan Wei ,  Ge Wang

    IPC分类号： A61B6/00

    CPC分类号： A61B6/481 ,  A61B6/032 ,  A61B6/4085 ,  A61B6/501 ,  A61B6/504 ,  A61B6/5264 ,  G06T11/005 ,  G06T2211/412

    摘要： An imaging system in an example comprises an x-ray source, a detector, a data acquisition system (DAS), and a computer. The x-ray source emits a beam of x-rays toward an object to be imaged. The detector receives x-rays emitted by the x-ray source. The DAS is operably connected to the detector. The computer is operably connected to the DAS and programmed to estimate motion of the object on a correlation-basis and through employment of earlier-collected data.

    摘要翻译： 示例中的成像系统包括x射线源，检测器，数据采集系统（DAS）和计算机。 x射线源向待成像的物体发射一束x射线。 检测器接收x射线源发射的X射线。 DAS可操作地连接到检测器。 计算机可操作地连接到DAS，并被编程以基于相关性估计对象的运动并且通过使用早期收集的数据。

    CT image reconstruction through employment of function that describes interpreted movement of source around particular point of object
    3.
    发明授权
    CT image reconstruction through employment of function that describes interpreted movement of source around particular point of object 有权
    通过使用功能描述CT图像重建，其描述围绕特定物体点的源的解释移动

    公开(公告)号：US07376213B1

    公开(公告)日：2008-05-20

    申请号：US11276301

    申请日：2006-02-23

    申请人： Yuchuan Wei ,  Jiang Hsieh ,  Ge Wang

    发明人： Yuchuan Wei ,  Jiang Hsieh ,  Ge Wang

    IPC分类号： G01N23/00

    CPC分类号： G01T1/2985 ,  A61B6/027 ,  A61B6/032 ,  G06T11/006 ,  G06T2211/412

    摘要： A CT system in an example comprises an x-ray source, a detector, a data acquisition system (DAS), and a computer. The x-ray source emits a beam of x-rays toward an object to be imaged. The detector receives x-rays emitted by the x-ray source. The DAS is operably connected to the detector. The computer is operably connected to the DAS. The computer is programmed to reconstruct a CT image of the object to comprise a plurality of CT images, of a respective plurality of points of the object, through employment of a function that describes how many times a trajectory curve, of an interpretation of relative movement between the x-ray source and the object as that of the x-ray source, goes around each of the plurality of points of the object.

    摘要翻译： 示例中的CT系统包括x射线源，检测器，数据采集系统（DAS）和计算机。 x射线源向待成像的物体发射一束x射线。 检测器接收x射线源发射的X射线。 DAS可操作地连接到检测器。 计算机可操作地连接到DAS。 计算机被编程为通过使用描述相对运动的解释的轨迹曲线的函数的函数来重构对象的CT图像以包括对象的相应多个点的多个CT图像 在X射线源和与X射线源的对象之间，绕过物体的多个点中的每一个。

    Progressive updating approach for volumetric CT image reconstruction
    5.
    发明授权
    Progressive updating approach for volumetric CT image reconstruction 有权
    体积CT图像重建的渐进更新方法

    公开(公告)号：US06850585B2

    公开(公告)日：2005-02-01

    申请号：US10382154

    申请日：2003-03-05

    申请人： Jiang Hsieh ,  Ge Wang

    发明人： Jiang Hsieh ,  Ge Wang

    IPC分类号： A61B6/00 ,  A61B6/03 ,  G06T11/00

    CPC分类号： A61B6/481 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4085 ,  A61B6/504 ,  G06T11/006 ,  G06T2211/424 ,  Y10S378/901

    摘要： In overlapping reconstruction for multi-slide spiral CT, adjacent slices of an object typically only have small differences. Based on this property, a progressive updating approach for volumetric ct image reconstruction includes a method and apparatus to use the well-known ordered subset expectation maximization (OSEM) formula or other iterative algorithms for spiral CT overlapping reconstruction. The imaging geometry is assumed to be single-slice helical/spiral scanning. To start with, a complete set of projections is synthesized via linear interpolation of data associated with opposite rays for reconstruction of the first slice. Then, new data are incrementally utilized for reconstruction of subsequent slices by updating the previous slice using the OSEM approach. To overcome accumulative errors, traditional reconstruction from a complete set of projections is performed when it is necessary as is determined by dynamically monitoring the relevant errors.

    摘要翻译： 在多片螺旋CT的重叠重建中，对象的相邻切片通常仅具有小的差异。 基于这一特性，用于体积ct图像重建的逐步更新方法包括使用公知的有序子集期望最大化（OSEM）公式或用于螺旋CT重叠重建的其他迭代算法的方法和装置。 假设成像几何是单层螺旋/螺旋扫描。 首先，通过与用于重构第一切片的相反射线相关联的数据的线性插值来合成一整套投影。 然后，通过使用OSEM方法更新先前的切片，新的数据被递增地用于后续切片的重构。 为了克服累积的错误，通过动态监测相关错误确定必要时，可以通过一套完整的预测来进行传统的重建。

    X-RAY PHOTON-COUNTING DATA CORRECTION THROUGH DEEP LEARNING
    7.
    发明申请
    X-RAY PHOTON-COUNTING DATA CORRECTION THROUGH DEEP LEARNING 有权

    公开(公告)号：US20220308242A1

    公开(公告)日：2022-09-29

    申请号：US17704520

    申请日：2022-03-25

    申请人： Ge Wang ,  Mengzhou Li ,  David S. Rundle

    发明人： Ge Wang ,  Mengzhou Li ,  David S. Rundle

    IPC分类号： G01T1/17 ,  G06N3/04 ,  G06N3/08 ,  G01T1/36

    摘要： A method for x-ray photon-counting data correction. The method includes generating, by a training data generation module, training input spectral projection data based, at least in part, on a reference spectral projection data. The training input spectral projection data includes at least one of a pulse pileup distortion, a charge splitting distortion, and/or noise. The method further includes training, by a training module, a data correction artificial neural network (ANN) based, at least in part, on training data. The data correction ANN includes a pulse pileup correction ANN, and a charge splitting correction ANN. The training data includes the training input spectral projection data and the reference spectral projection data.

    Extended interior methods and systems for spectral, optical, and photoacoustic imaging
    10.
    发明授权
    Extended interior methods and systems for spectral, optical, and photoacoustic imaging 有权
    用于光谱，光学和光声成像的扩展内部方法和系统

    公开(公告)号：US08862206B2

    公开(公告)日：2014-10-14

    申请号：US12945733

    申请日：2010-11-12

    申请人： Ge Wang ,  Yong Xu ,  Alexander Cong ,  Haiou Shen ,  Wenxiang Cong ,  Lin Yang ,  Yang Lu

    发明人： Ge Wang ,  Yong Xu ,  Alexander Cong ,  Haiou Shen ,  Wenxiang Cong ,  Lin Yang ,  Yang Lu

    IPC分类号： A61B5/05 ,  G01N23/04 ,  G06T11/00 ,  A61B6/00 ,  A61B6/03 ,  A61B5/00

    CPC分类号： A61B6/032 ,  A61B5/0095 ,  A61B5/7232 ,  A61B6/4007 ,  A61B6/508 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612 ,  G06T11/006 ,  G06T2211/424 ,  G06T2211/432 ,  G06T2211/436

    摘要： The present invention relates to the field of medical imaging. More particularly, embodiments of the invention relate to methods, systems, and devices for imaging, including for tomography-based applications. Embodiments of the invention include, for example, a computed tomography based imaging system comprising: (a) at least one wide-beam gray-scale imaging chain capable of performing a global scan of an object and acquiring projection data relating to the object; (b) at least one narrow-beam true-color imaging chain capable of performing a spectral interior scan of a region of interest (ROI) of and acquiring projection data relating to the object; (c) a processing module operably configured for: (1) receiving the projection data; (2) reconstructing the ROI into an image by analyzing the data with a color interior tomography algorithm, aided by an individualized gray-scale reconstruction of an entire field of view (FOV), including the ROI; and (d) a processor for executing the processing module. The extended interior methods and systems for spectral, optical, and photoacoustic imaging presented in this application can lead to better medical diagnoses by providing images with higher resolution or quality, and can lead to safer procedures by providing systems capable of reducing a patient's exposure time to, and thus quantity of, potentially harmful x-rays. Embodiments of the invention also provide tools for real-time tomography-based analyses.

    摘要翻译： 本发明涉及医学成像领域。 更具体地，本发明的实施例涉及用于成像的方法，系统和装置，包括用于基于层析摄影的应用。 本发明的实施例包括例如基于计算机断层摄影的成像系统，包括：（a）至少一个能够执行对象的全局扫描并获取与该对象有关的投影数据的宽光束灰度级成像链; （b）至少一个能够执行感兴趣区域（ROI）的光谱内部扫描并获取与该对象有关的投影数据的窄束真彩色成像链; （c）可操作地配置用于：（1）接收投影数据的处理模块; （2）通过在包括ROI的整个视场（FOV）的个体化灰度重建的辅助下，利用颜色内部层析成像算法分析数据，将ROI重建成图像; 和（d）用于执行处理模块的处理器。 本应用中提出的用于光谱，光学和光声成像的扩展内部方法和系统可以通过提供具有更高分辨率或质量的图像来导致更好的医学诊断，并且可以通过提供能够减少患者的暴露时间的系统来导致更安全的程序 ，因此可能有害x射线的数量。 本发明的实施例还提供用于基于实时断层摄影的分析的工具。