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    DATA-BASED SCAN GATING
    1.
    发明申请
    DATA-BASED SCAN GATING 审中-公开

    公开(公告)号：US20200163639A1

    公开(公告)日：2020-05-28

    申请号：US16200175

    申请日：2018-11-26

    Applicant: General Electric Company

    Inventor： Bruno Kristiaan Bernard De Man ,  Eri Haneda ,  Jed Douglas Pack ,  Bernhard Erich Hermann Claus

    IPC: A61B6/00 ,  G06T7/20 ,  G06N3/08

    Abstract: In accordance with the present disclosure, the present technique finds a diagnostic scan timing for a non-static object (e.g., a heart or other dynamic object undergoing motion) from raw scan data, as opposed to reconstructed image data. To find the scan timing, a monitoring scan of a patient's heart is performed. In the monitoring scan, the patient dose may be limited or minimized. As the projection data is acquired during such a monitoring scan, the projection data may be subjected to sinogram analysis in a concurrent or real-time manner to determine when to start (or trigger) the diagnostic scan.

    Iterative reconstruction in image formation
    5.
    发明授权
    Iterative reconstruction in image formation 有权
    图像形成中的迭代重建

    公开(公告)号：US09406154B2

    公开(公告)日：2016-08-02

    申请号：US13918656

    申请日：2013-06-14

    Applicant: General Electric Company ,  The Regents of the University of Michigan

    Inventor： Lin Fu ,  Madison Gray McGaffin ,  Zhou Yu ,  Jean-Baptiste Thibault ,  Sathish Ramani ,  Jeffrey Allen Fessler ,  Bruno Kristiaan Bernard De Man ,  Debashish Pal

    IPC: G06T11/00

    CPC classification number: G06T11/006 ,  G06T2211/424

    Abstract: The use of the channelized preconditioners in iterative reconstruction is disclosed. In certain embodiments, different channels correspond to different frequency sub-bands and the output of the different channels can be combined to update an image estimate used in the iterative reconstruction process. While individual channels may be relatively simple, the combined channels can represent complex spatial variant operations. The use of channelized preconditioners allows empirical adjustment of individual channels.

    Abstract translation: 公开了在迭代重建中使用信道化预处理器。 在某些实施例中，不同的信道对应于不同的频率子带，并且可以组合不同信道的输出以更新在迭代重建过程中使用的图像估计。 虽然单个通道可能相对简单，但组合通道可以表示复杂的空间变体操作。 通道化预处理器的使用允许对各个通道进行实证调整。

    SYSTEMS AND METHODS FOR METAL ARTIFACT REDUCTION
    6.
    发明申请
    SYSTEMS AND METHODS FOR METAL ARTIFACT REDUCTION 有权
    金属制品减少的系统和方法

    公开(公告)号：US20160117850A1

    公开(公告)日：2016-04-28

    申请号：US14920991

    申请日：2015-10-23

    Applicant: GENERAL ELECTRIC COMPANY

    Inventor： Yannan Jin ,  Bruno Kristiaan Bernard De Man ,  Ge Wang ,  Yan Xi

    IPC: G06T11/00 ,  G06T5/00 ,  A61B6/00

    CPC classification number: A61B6/5258 ,  A61B6/03 ,  A61B6/482 ,  A61B6/5205 ,  G06T5/005 ,  G06T5/50 ,  G06T11/005 ,  G06T2207/10081 ,  G06T2207/10144 ,  G06T2207/20221 ,  G06T2207/30004 ,  G06T2211/408

    Abstract: A method includes receiving, with at least one processor, a first projection dataset corresponding to X-rays at a first energy level projected towards a subject at a first set of view angles and receiving, with the at least one processor, a second projection dataset corresponding to X-rays at a second energy level projected towards the subject at a second set of view angles. The method further includes identifying, with the at least one processor, a metal trace from at least one of the first projection dataset and the second projection dataset. Moreover, the method includes converting, with the at least one processor, at least a portion of the first projection dataset to a pseudo dataset at the second energy level. The method also includes generating, with the at least one processor, a final image of the subject based on the second projection dataset, the pseudo dataset, and the metal trace.

    Abstract translation: 一种方法包括：利用至少一个处理器，以在第一组视角投射到对象的第一能级对应于对应于X射线的第一投影数据集，并且与所述至少一个处理器接收第二投影数据集 对应于在第二组视角下朝向对象投射的第二能级的X射线。 该方法还包括用至少一个处理器识别来自第一投影数据集和第二投影数据集中的至少一个的金属迹线。 而且，该方法包括：利用至少一个处理器将第一投影数据集的至少一部分转换为第二能级的伪数据集。 该方法还包括基于第二投影数据集，伪数据集和金属迹线与至少一个处理器生成对象的最终图像。

    SYSTEM AND METHOD FOR FOCAL SPOT DEFLECTION
    8.
    发明申请
    SYSTEM AND METHOD FOR FOCAL SPOT DEFLECTION 审中-公开
    用于FOCAL SPOT偏差的系统和方法

    公开(公告)号：US20140177794A1

    公开(公告)日：2014-06-26

    申请号：US13726321

    申请日：2012-12-24

    Applicant: The Board of Trustees of the Leland Stanford Junior University ,  GENERAL ELECTRIC COMPANY

    Inventor： Bruno Kristiaan Bernard De Man ,  Kyle Morgan Champley ,  Norbert Joseph Pelc

    IPC: G01N23/04

    CPC classification number: H01J35/10 ,  A61B6/032 ,  A61B6/0457 ,  A61B6/4021 ,  G01N23/046 ,  G01N2223/204 ,  H01J35/26 ,  H01J2235/086

    Abstract: An X-ray tube and methods for imaging are disclosed. The X-ray tube includes an emitter configured to generate an electron beam. Further, the X-ray tube includes a target configured to generate X-rays in response to the electron beam, where a target surface includes at least a first region having a first elevation and a second region having a second elevation different from the first elevation. The X-ray tube also includes a detector configured to generate projection data based on the X-rays and a computing device coupled to the emitter, the detector and/or the target. The computing device is configured to deflect a focal spot on the target surface by controlling target rotation such that the electron beam impinges alternatively on the first and second regions. The computing device processes the projection data corresponding to the deflected focal spot positions and reconstructs images of a subject using the processed projection data.

    Abstract translation: 公开了一种X射线管和成像方法。 X射线管包括被配置为产生电子束的发射器。 此外，X射线管包括被配置为响应于电子束产生X射线的目标，其中目标表面至少包括具有第一高度的第一区域和具有不同于第一高度的第二高度的第二区域 。 X射线管还包括被配置为基于X射线产生投影数据的检测器和耦合到发射器，检测器和/或靶的计算装置。 计算设备被配置为通过控制目标旋转来偏转目标表面上的焦点，使得电子束交替地入射在第一和第二区域上。 计算设备处理与偏转的焦点位置相对应的投影数据，并使用处理的投影数据重建对象的图像。

    ORDERED SUBSETS WITH MOMENTUM FOR X-RAY CT IMAGE RECONSTRUCTION
    9.
    发明申请
    ORDERED SUBSETS WITH MOMENTUM FOR X-RAY CT IMAGE RECONSTRUCTION 有权
    用于X射线CT图像重建的订购子系统

    公开(公告)号：US20140140599A1

    公开(公告)日：2014-05-22

    申请号：US14045816

    申请日：2013-10-04

    Applicant: The Regents of the University of Michigan ,  General Electric Company

    Inventor： Donghwan Kim ,  Sathish Ramani ,  Jeffrey A. Fessler ,  Lin Fu ,  Bruno Kristiaan Bernard De Man

    IPC: G06T7/00

    CPC classification number: G06T11/006 ,  G06T2211/424

    Abstract: Methods, systems, and non-transitory computer readable media for image reconstruction are presented. Measured data corresponding to a subject is received. A preliminary image update in a particular iteration is determined based on one or more image variables computed using at least a subset of the measured data in the particular iteration. Additionally, at least one momentum term is determined based on the one or more image variables computed in the particular iteration and/or one or more further image variables computed in one or more iterations preceding the particular iteration. Further, a subsequent image update is determined using the preliminary image update and the momentum term. The preliminary image update and/or the subsequent image update are iteratively computed for a plurality of iterations until one or more termination criteria are satisfied.

    Abstract translation: 提出了用于图像重建的方法，系统和非暂时性计算机可读介质。 接收与被摄体对应的测量数据。 基于在特定迭代中使用至少一个测量数据的子集计算的一个或多个图像变量来确定特定迭代中的初步图像更新。 另外，基于在特定迭代中计算的一个或多个图像变量和/或在特定迭代之前的一个或多个迭代中计算的一个或多个另外的图像变量来确定至少一个动量项。 此外，使用初步图像更新和动量项来确定随后的图像更新。 对多个迭代迭代地计算初步图像更新和/或后续图像更新，直到满足一个或多个终止标准。

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