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40 条记录 (耗时 0.025 秒)

    Method and system for mesh-to-image registration using raycasting
    21.
    发明授权
    Method and system for mesh-to-image registration using raycasting 失效
    使用raycasting进行网格到图像配准的方法和系统

    公开(公告)号：US07339586B2

    公开(公告)日：2008-03-04

    申请号：US11111397

    申请日：2005-04-21

    申请人： Jens Gühring

    发明人： Jens Gühring

    IPC分类号： G06T15/00 ,  G06T17/00 ,  G06T15/50 ,  G06T15/60 ,  G06K9/00 ,  G06K9/32

    CPC分类号： G06T7/30 ,  G06T2207/10072 ,  G06T2207/30004

    摘要： A method of registering a digital image with a polygonal mesh comprising the steps of providing a digital image, providing a polygonal mesh comprising a plurality of vertices that approximates an object in the digital image, propagating a ray from a vertex of the polygonal mesh into the digital image and calculating a line integral of opacity values wherein each opacity value corresponds to the intensity of a pixel of the image through which said ray passes, terminating the ray at a point in the image when an opacity threshold is reached, and adding the termination point to a set of closest points. A registration is computed between the vertices of the polygonal mesh and the set of closest points, and the registration is applied to the polygonal mesh to obtain a new set of vertices.

    摘要翻译： 一种用多角形网格注册数字图像的方法，包括以下步骤：提供数字图像，提供多边形网格，其包括近似数字图像中的对象的多个顶点，将来自多边形网格的顶点的射线传播到 数字图像并计算不透明度值的线积分，其中每个不透明度值对应于所述光线通过的图像的像素的强度，当达到不透明度阈值时终止在图像中的点处的光线，并且将终止 指向一组最接近的点。 在多边形网格的顶点和最近点的集合之间计算注册，并且将注册应用于多边形网格以获得新的顶点集合。

    System and method for background phase correction for phase contrast flow images
    22.
    发明授权
    System and method for background phase correction for phase contrast flow images 有权
    用于相位对比流图像的背景相位校正的系统和方法

    公开(公告)号：US08897519B2

    公开(公告)日：2014-11-25

    申请号：US13210497

    申请日：2011-08-16

    申请人： Jens Gühring ,  Marie-Pierre Jolly ,  Hui Xue

    发明人： Jens Gühring ,  Marie-Pierre Jolly ,  Hui Xue

    IPC分类号： G06K9/00 ,  G01R33/563 ,  A61B5/026 ,  A61B5/055 ,  G01R33/56

    CPC分类号： G01R33/56316 ,  A61B5/0263 ,  A61B5/055 ,  G01R33/5608

    摘要： A method for correcting the background phase in magnetic resonance phase contrast flow images includes providing a time series of velocity encoded magnetic resonance images of a patient, where the time series of velocity encoded images comprises for each time point a phase contrast image where a pixel intensity is proportional to a flow velocity, measuring a change of intensity for each pixel over the time series of phase contrast images, identifying pixels with a low measure of temporal change as stationary pixels, and calculating a correction field for the stationary pixels, where the correction field represents a background phase to be subtracted from the phase contrast image.

    摘要翻译： 用于校正磁共振相位对比流图像中的背景相位的方法包括提供患者的速度编码的磁共振图像的时间序列，其中速度编码图像的时间序列包括每个时间点的像素强度 与流速成比例，测量在相位对比图像的时间序列上的每个像素的强度变化，将以时间变化的低度量度的像素识别为静止像素，以及计算用于静止像素的校正场，其中校正 场表示从相位差图像中减去的背景相位。

    Motion tracking for clinical parameter derivation and adaptive flow acquisition in magnetic resonance imaging
    25.
    发明授权
    Motion tracking for clinical parameter derivation and adaptive flow acquisition in magnetic resonance imaging 有权
    磁共振成像中临床参数推导和自适应流量采集的运动跟踪

    公开(公告)号：US08792699B2

    公开(公告)日：2014-07-29

    申请号：US13239530

    申请日：2011-09-22

    申请人： Christoph Guetter ,  Jens Gühring ,  Marie-Pierre Jolly ,  Xiaoguang Lu ,  Hui Xue ,  Jeremy Collins ,  Peter Weale

    发明人： Christoph Guetter ,  Jens Gühring ,  Marie-Pierre Jolly ,  Xiaoguang Lu ,  Hui Xue ,  Jeremy Collins ,  Peter Weale

    IPC分类号： G06K9/00

    CPC分类号： G01R33/56316

    摘要： A method for clinical parameter derivation and adaptive flow acquisition within a sequence of magnetic resonance images includes commencing an acquisition of a sequence of images. One or more landmarks are automatically detected from within one or more images of the sequence of images. The detected one or more landmarks are propagated across subsequent images of the sequence of images. A plane is fitted to the propagation of landmarks. The positions of landmarks or alternatively the position of the fitted plane within the sequence of images is used for derivation of clinical parameters such as tissue velocities and/or performing adaptive flow acquisitions to measure blood flow properties.

    摘要翻译： 在磁共振图像序列内的临床参数推导和自适应流采集的方法包括开始获取图像序列。 在图像序列的一个或多个图像内自动检测一个或多个地标。 检测到的一个或多个地标在图像序列的后续图像中传播。 一个平面适合于地标的传播。 地标的位置或替代地，图像序列内的拟合平面的位置用于推导诸如组织速度的临床参数和/或执行自适应流采集以测量血流特性。

    Medical Imaging Guideline Compliance System
    27.
    发明申请
    Medical Imaging Guideline Compliance System 审中-公开
    医学影像指导合规体系

    公开(公告)号：US20130297331A1

    公开(公告)日：2013-11-07

    申请号：US13756928

    申请日：2013-02-01

    申请人： Sven Zuehlsdorff ,  Christopher Glielmi ,  Ning Jin ,  Xiaoming Bi ,  Jens Gühring

    发明人： Sven Zuehlsdorff ,  Christopher Glielmi ,  Ning Jin ,  Xiaoming Bi ,  Jens Gühring

    IPC分类号： G06Q40/08 ,  G06Q50/22

    CPC分类号： G06Q40/08 ,  G06F19/328 ,  G06Q50/22 ,  G16H40/20

    摘要： A system supports medical imaging compliance with guideline and reimbursement requirements using at least one repository and a compliance processor. The at least one repository associates information including, specific reimbursement requirements of a patient insurance company with an imaging protocol compliant with predetermined guidelines for imaging a particular anatomical feature and with a specific type of imaging device and with multiple different steps of the imaging protocol. The compliance processor uses the information in, determining whether a particular imaging protocol for imaging a particular anatomical feature of a particular patient on a particular type of imaging device is compliant with the guidelines and the reimbursement requirements and identifying at least one of, (a) a missing step and (b) an incorrect step, in the particular imaging protocol.

    摘要翻译： 系统使用至少一个存储库和合规处理器来支持符合指南和报销要求的医学成像。 所述至少一个存储库将包括患者保险公司的特定报销要求的信息与符合预定准则的成像协议相关联，所述成像协议用于成像特定解剖特征以及特定类型的成像设备以及成像协议的多个不同步骤。 合规处理器使用信息，确定用于对特定类型的成像装置上的特定患者的特定解剖特征进行成像的特定成像协议是否符合指南和报销要求，并且确定以下中的至少一个：（a） 缺少一个步骤，（b）特定成像协议中的错误步骤。

    INTERACTION METHOD FOR REGIONS OF-INTEREST IN TIME SERIES IMAGES
    29.
    发明申请
    INTERACTION METHOD FOR REGIONS OF-INTEREST IN TIME SERIES IMAGES 有权
    时间序列图像中的区域交互方法

    公开(公告)号：US20120087561A1

    公开(公告)日：2012-04-12

    申请号：US13248309

    申请日：2011-09-29

    申请人： Christoph Guetter ,  Jens Gühring ,  Marie-Pierre Jolly ,  Arne Littmann ,  Manuela Rick ,  Michaela Schmidt ,  Hui Xue

    发明人： Christoph Guetter ,  Jens Gühring ,  Marie-Pierre Jolly ,  Arne Littmann ,  Manuela Rick ,  Michaela Schmidt ,  Hui Xue

    IPC分类号： G06K9/46

    CPC分类号： G06T7/0083 ,  G06T7/12 ,  G06T7/174 ,  G06T2207/10016 ,  G06T2207/10072 ,  G06T2207/10116 ,  G06T2207/20104 ,  G06T2207/30004

    摘要： A method for identifying a region of interest within a time sequence of images includes acquiring a time sequence of images comprising a plurality of image frames. Image segmentation is performed to segment a region of interest (ROI) from within each of the plurality of image frames of the time sequence of images. Manual edits are received for the ROI within one or more of the plurality of image frames. The manual edits are propagated to other image frames of the plurality of images. An extent to which each of the manual edits are propagated to other image frames is dependent upon a transformation function or deformation field used to propagate the manual edits and a weighing factor that is influenced by a distance in time between the other image frames and the frames that have been manually edited.

    摘要翻译： 用于识别图像的时间序列内的感兴趣区域的方法包括获取包括多个图像帧的图像的时间序列。 执行图像分割以从图像的时间序列的多个图像帧的每一个内分割感兴趣区域（ROI）。 对于多个图像帧中的一个或多个中的ROI，接收手动编辑。 手动编辑被传播到多个图像的其他图像帧。 每个手动编辑传播到其他图像帧的程度取决于用于传播手动编辑的变换函数或变形字段以及受其他图像帧和帧之间的时间距离的影响的称重因子 已经被手动编辑。