利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

61 条记录 (耗时 0.034 秒)

    Method for image data acquisition with a magnetic resonance device
    51.
    发明授权
    Method for image data acquisition with a magnetic resonance device 有权
    用磁共振装置进行图像数据采集的方法

    公开(公告)号：US08085043B2

    公开(公告)日：2011-12-27

    申请号：US12417782

    申请日：2009-04-03

    申请人： Andreas Grimme ,  Jens Guehring ,  Marie-Pierre Jolly ,  Michaela Schmidt ,  Peter Speier

    发明人： Andreas Grimme ,  Jens Guehring ,  Marie-Pierre Jolly ,  Michaela Schmidt ,  Peter Speier

    IPC分类号： G01V3/00

    CPC分类号： G01R33/4833 ,  G01R33/543 ,  G01R33/5608

    摘要： In a method for image data acquisition of a region of interest in a subject with a magnetic resonance device, wherein, to establish the field of view, a minimal geometric shape encompassing the subject to be acquired and/or the surface of the subject is determined automatically from previously acquired localizer exposures as aliasing information for each exposure, at least one slice plane is determined for the acquisition of the region, and the phase coding direction and/or the extent of the field of view in the phase coding direction is determined for every slice plane using the aliasing information.

    摘要翻译： 在用于使用磁共振装置对被摄体中的感兴趣区域进行图像数据采集的方法中，其中，为了建立视野，确定包含要获取的对象和/或被摄体的表面的最小几何形状 自动地从先前获得的定位器曝光作为每次曝光的混叠信息，确定至少一个切片平面用于获取该区域，并且确定相位编码方向上的相位编码方向和/或视场的范围，用于 每个切片平面使用混叠信息。

    Using Graph Cuts for Editing Photographs
    53.
    发明申请
    Using Graph Cuts for Editing Photographs 有权
    使用图形剪辑编辑照片

    公开(公告)号：US20070292025A1

    公开(公告)日：2007-12-20

    申请号：US11772915

    申请日：2007-07-03

    申请人： Yuri Boykov ,  Marie-Pierre Jolly

    发明人： Yuri Boykov ,  Marie-Pierre Jolly

    IPC分类号： G06K9/34

    CPC分类号： G06K9/342 ,  G06K9/6224 ,  G06T7/11 ,  G06T7/162 ,  G06T2207/20101

    摘要： An image editing system comprises an input device for inputting an image, a graphical user interface for selecting background and object seeds for the image, and an image processor for editing the image. The image processor has various editing routines, including a segmentation routine that builds a graph associated with the image and uses a graph cut algorithm to cut the graph into segments. The user marks certain pixels as “object” or “background” to provide hard constraints for segmentation. Additional soft constraints incorporate both boundary and regional information. Graph cuts are used to find the globally optimal segementation of the image. The obtained solution gives the best balance of boundary and region properties satisfying the constraints.

    摘要翻译： 图像编辑系统包括用于输入图像的输入装置，用于选择图像的背景和对象种子的图形用户界面，以及用于编辑图像的图像处理器。 图像处理器具有各种编辑例程，包括构建与图像相关联的图形的分割例程，并使用图形切割算法将图形切割成段。 用户将某些像素标记为“对象”或“背景”，为分割提供硬约束。 额外的软约束包含边界和区域信息。 图形切割用于查找图像的全局最佳分割。 得到的解得到满足约束条件的边界和区域性质的最佳平衡。

    Graph cuts for binary segmentation of n-dimensional images from object and background seeds
    55.
    发明授权
    Graph cuts for binary segmentation of n-dimensional images from object and background seeds 有权
    图形切割用于从对象和背景种子进行二维分割的n维图像

    公开(公告)号：US06973212B2

    公开(公告)日：2005-12-06

    申请号：US09943035

    申请日：2001-08-30

    申请人： Yuri Boykov ,  Marie-Pierre Jolly

    发明人： Yuri Boykov ,  Marie-Pierre Jolly

    IPC分类号： G06T5/00 ,  G06K9/34

    CPC分类号： G06K9/342 ,  G06K9/6224 ,  G06T7/11 ,  G06T7/162 ,  G06T2207/10072 ,  G06T2207/20101

    摘要： Disclosed is a method of segmenting one or more objects from one or more backgrounds in an image, the method comprising defining a plurality of image nodes, each said image node corresponding to one or more pixels of said image, connecting pairs of adjacent nodes with n-links, each said n-link weighted with an n-link cost, defining a source node, defining a sink node, defining one or more object seeds, said object seeds corresponding to image nodes within said objects, defining one or more background seeds, said background seeds corresponding to image nodes within said backgrounds, connecting said source node with each said object seed with a plurality of t-links, connecting said sink node with each said background seed with a plurality of t-links, wherein each said t-links is weighted with a t-link cost, and calculating a segmentation cut having the smallest total cost of all cuts separating said source from said sink, wherein said total cost of each said cut is defined as the sum of the costs of all said n-links and t-links that each said cut severs.

    摘要翻译： 公开了一种从图像中的一个或多个背景分割一个或多个对象的方法，所述方法包括定义多个图像节点，每个所述图像节点对应于所述图像的一个或多个像素，将相邻节点对与n 链接，每个所述n链路以n链路成本加权，定义源节点，定义汇聚节点，定义一个或多个对象种子，所述对象种子对应于所述对象内的图像节点，定义一个或多个背景种子 所述背景种子对应于所述背景内的图像节点，将所述源节点与每个所述对象种子连接多个t链路，将所述宿节点与每个所述背景种子连接多个t链路，其中每个所述t链路 链接以t链接成本加权，并且计算具有将所述源与所述宿分开的所有切割的总成本最小的分割切割，其中每个所述切割的总成本被定义为 所有这些切断的所有n链路和t链路的成本。

    Localization of aorta and left atrium from magnetic resonance imaging
    56.
    发明授权
    Localization of aorta and left atrium from magnetic resonance imaging 有权
    从磁共振成像定位主动脉和左心房

    公开(公告)号：US08781552B2

    公开(公告)日：2014-07-15

    申请号：US13546101

    申请日：2012-07-11

    申请人： Xiaoguang Lu ,  Marie-Pierre Jolly

    发明人： Xiaoguang Lu ,  Marie-Pierre Jolly

    IPC分类号： A61B5/055 ,  G06K9/00 ,  A61B5/00 ,  G01R33/483

    CPC分类号： A61B5/055 ,  A61B5/0044 ,  A61B5/7267 ,  A61B2576/023 ,  G01R33/483

    摘要： The aorta and left atrium are localized from magnetic resonance data. The locations of the aorta and left atrium are detected jointly. The aorta and the left atrium are, at least in part, treated as one object. The detection may be from data representing a two-dimensional region. The two-dimensional region may be determined by first detecting the left ventricle from data representing a volume.

    摘要翻译： 主动脉和左心房由磁共振数据定位。 联合检测主动脉和左心房的位置。 主动脉和左心房至少部分被视为一个对象。 检测可以来自表示二维区域的数据。 可以通过首先从表示体积的数据检测左心室来确定二维区域。

    System and method for cardiac segmentation in MR-cine data using inverse consistent non-rigid registration
    57.
    发明授权
    System and method for cardiac segmentation in MR-cine data using inverse consistent non-rigid registration 有权
    使用反向一致非刚性注册的MR电影数据中心脏分割的系统和方法

    公开(公告)号：US08494236B2

    公开(公告)日：2013-07-23

    申请号：US12894255

    申请日：2010-11-30

    申请人： Marie-Pierre Jolly ,  Christoph Guetter ,  Jens Guehring

    发明人： Marie-Pierre Jolly ,  Christoph Guetter ,  Jens Guehring

    IPC分类号： G06K9/00 ,  G06K9/46 ,  G06K9/34

    CPC分类号： G06T7/12 ,  G06K2209/051 ,  G06T7/174 ,  G06T2207/10076 ,  G06T2207/30048

    摘要： A method for cardiac segmentation in magnetic resonance (MR) cine data, includes providing a time series of 3D cardiac MR images acquired at a plurality of phases over at least one cardiac cycle, in which each 3D image includes a plurality of 2D slices, and a heart and blood pool has been detected in each image. Gray scales of each image are analyzed to compute histograms of the blood pool and myocardium. Non-rigid registration deformation fields are calculated to register a selected image slice with corresponding slices in each phase. Endocardium and epicardium gradients are calculated for one phase of the selected image slice. Contours for the endocardium and epicardium are computed from the gradients in the one phase, and the endocardium and epicardium contours are recovered in all phases of the selected image slice. The recovered endocardium and epicardium contours segment the heart in the selected image slice.

    摘要翻译： 一种用于磁共振（MR）电影数据中的心脏分割的方法，包括提供在至少一个心动周期上以多个相位获取的3D心脏MR图像的时间序列，其中每个3D图像包括多个2D切片，以及 在每张图像中都检测到心脏和血液池。 分析每个图像的灰度级，以计算血库和心肌的直方图。 计算非刚性配准变形场，以在每个相位中对应选定的图像切片。 对所选图像切片的一个相位计算心内膜和心外膜梯度。 从一个阶段的梯度计算心内膜和心外膜的轮廓，并且在所选图像切片的所有阶段恢复心内膜和外膜轮廓。 恢复的心内膜和心外膜轮廓在选定的图像切片中分割心脏。

    SYSTEM AND METHOD FOR CARDIAC SEGMENTATION IN MR-CINE DATA USING INVERSE CONSISTENT NON-RIGID REGISTRATION
    59.
    发明申请
    SYSTEM AND METHOD FOR CARDIAC SEGMENTATION IN MR-CINE DATA USING INVERSE CONSISTENT NON-RIGID REGISTRATION 有权
    使用反向一致性非刚性注册的磁盘阵列数据中的心脏分割的系统和方法

    公开(公告)号：US20110081066A1

    公开(公告)日：2011-04-07

    申请号：US12894255

    申请日：2010-11-30

    申请人： Marie-Pierre Jolly ,  Christoph Guetter ,  Jens Guehring

    发明人： Marie-Pierre Jolly ,  Christoph Guetter ,  Jens Guehring

    IPC分类号： G06K9/00

    CPC分类号： G06T7/12 ,  G06K2209/051 ,  G06T7/174 ,  G06T2207/10076 ,  G06T2207/30048

    摘要： A method for cardiac segmentation in magnetic resonance (MR) cine data, includes providing a time series of 3D cardiac MR images acquired at a plurality of phases over at least one cardiac cycle, in which each 3D image includes a plurality of 2D slices, and a heart and blood pool has been detected in each image. Gray scales of each image are analyzed to compute histograms of the blood pool and myocardium. Non-rigid registration deformation fields are calculated to register a selected image slice with corresponding slices in each phase. Endocardium and epicardium gradients are calculated for one phase of the selected image slice. Contours for the endocardium and epicardium are computed from the gradients in the one phase, and the endocardium and epicardium contours are recovered in all phases of the selected image slice. The recovered endocardium and epicardium contours segment the heart in the selected image slice.

    摘要翻译： 一种用于磁共振（MR）电影数据中的心脏分割的方法，包括提供在至少一个心动周期上以多个相位获取的3D心脏MR图像的时间序列，其中每个3D图像包括多个2D切片，以及 在每张图像中都检测到心脏和血液池。 分析每个图像的灰度级，以计算血库和心肌的直方图。 计算非刚性配准变形场，以在每个相位中对应选定的图像切片。 对所选图像切片的一个相位计算心内膜和心外膜梯度。 从一个阶段的梯度计算心内膜和心外膜的轮廓，并且在所选图像切片的所有阶段恢复心内膜和外膜轮廓。 恢复的心内膜和心外膜轮廓在选定的图像切片中分割心脏。