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    • 1. 发明申请
    • CORONARY ARTERY SELECTIVE CALCIUM ASSIGNMENT USING LOW DOSE CALCIUM SCORING SCANS
    • 冠状动脉选择性钙分配使用低剂量钙分析扫描
    • WO2008135946A2
    • 2008-11-13
    • PCT/IB2008/051737
    • 2008-05-05
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHGRASS, MichaelVON BERG, Jens
    • GRASS, MichaelVON BERG, Jens
    • A61B6/03
    • A61B6/504A61B6/481A61B6/503
    • It is described a method for coronary artery selective calcium assignment by computed tomography, wherein the method comprising the steps of performing a low x-ray dose cardiac calcium scoring scan, obtaining a data set of said cardiac calcium scoring scan, generating reconstructed images from the data set of said cardiac calcium scoring scan, analyzing the reconstructed images for segmented calcium deposits, deriving a data set of calcification from the analysis, wherein a cardiac model is adapted to the reconstructed image such that segmented calcium deposits can be assigned to specific areas of the heart. Further a device (100) for performing a method for coronary artery selective calcium assignment by computed tomography according to the inventive method is described, wherein the device (100) comprises a CT unit (10) for performing a low x-ray dose cardiac calcium scoring scan; an acquisition unit (20) for obtaining a data set of said cardiac calcium scoring scan; a generation unit (30) for generating reconstructed images from the data set of said cardiac calcium scoring scan; an analyzing unit (40) for analyzing the reconstructed images for segmented calcium deposits; a deriving unit (50) for deriving a data set of calcification from the analysis.
    • 描述了通过计算机断层摄影术进行冠状动脉选择性钙分配的方法,其中所述方法包括以下步骤:执行低X射线剂量心脏钙评分扫描,获得所述心脏钙评分扫描的数据集,从 所述心脏钙评分扫描的数据集,分析分割钙沉积物的重建图像,从分析中导出钙化数据集,其中心脏模型适用于重建图像,使得分割的钙沉积物可被分配到 心脏 此外,描述了根据本发明的方法通过计算机断层摄影执行冠状动脉选择性钙分配方法的装置(100),其中所述装置(100)包括用于执行低x射线剂量心脏钙的CT单元(10) 得分扫描; 获取单元(20),用于获取所述心脏钙评分扫描的数据集; 用于从所述心脏钙评分扫描的数据集中产生重建图像的生成单元(30); 分析单元(40),用于分析用于分割的钙沉积物的重建图像; 用于从分析中导出钙化数据集的导出单元(50)。
    • 2. 发明申请
    • INTERACTIVE IMAGE REGISTRATION
    • 互动图像注册
    • WO2010134013A1
    • 2010-11-25
    • PCT/IB2010/052169
    • 2010-05-17
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHVON BERG, JensNEITZEL, Ulrich
    • VON BERG, JensNEITZEL, Ulrich
    • G06T7/00
    • G06T7/30G06T2207/20101
    • A system for registering at least two input images is described. The input images comprise projection images. The system comprises a graphical user interface (1) for receiving a user input indicating a portion of at least one of the input images. The system comprises segmenting means (2) for segmenting an object represented by the input image, based on the portion,to obtain a segmented object. The system comprises mask identifying means (3) for identifying a mask based on the segmented object, the mask being indicative of a portion of the input image whereon the registering is to be based. The system comprises registration means (4) for registering the images, taking into account the mask, for obtaining at least two registered images. The system further comprises subtracting means (5) for subtracting one registered image from another registered image.
    • 描述用于登记至少两个输入图像的系统。 输入图像包括投影图像。 该系统包括用于接收指示至少一个输入图像的一部分的用户输入的图形用户界面(1)。 该系统包括用于基于该部分分割由输入图像表示的对象的分割装置(2),以获得分割对象。 该系统包括用于基于分割对象识别掩模的掩模识别装置(3),掩模指示登记所基于的输入图像的一部分。 该系统包括用于登记图像的登记装置(4),考虑到掩模,以获得至少两个登记图像。 该系统还包括从另一个登记图像中减去一个登记图像的减法装置(5)。
    • 3. 发明申请
    • PREDICTING USER INTERACTIONS DURING IMAGE PROCESSING
    • 预测图像处理过程中的用户交互
    • WO2010084435A2
    • 2010-07-29
    • PCT/IB2010/050123
    • 2010-01-13
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHSCHMIDT, Stefan, M., F.DRIES, Sebastian, P., M.VON BERG, Jens
    • SCHMIDT, Stefan, M., F.DRIES, Sebastian, P., M.VON BERG, Jens
    • G06N7/00
    • G06N5/048G06K9/00335G06N7/005G06N99/005
    • The invention relates to an apparatus for processing images by means of a series of user interactions. When processing an image, the user follows a series of interactions. Preferably, this is standardized to ensure reproducibility and accuracy. However, the series of interactions required from the user may be dependent on the needs of the user, the image being processed or even on the preferences of the user. The invention provides an apparatus which can deal with complex image processing requirements, providing both a standardized series of steps, or trail, in the image visualization process, and allowing the user to deviate from this standard trail if required. This accelerates and simplifies the interaction necessary when the user performs a known task on a different image. It also provides valuable assistance when the user performs an unfamiliar task, thereby avoiding mistakes, such as incorrect radiation levels during image acquisition, which can have serious consequences in a medical imaging environment.
    • 通过一系列用户交互来处理图像的设备技术领域本发明涉及一种通过一系列用户交互来处理图像的设备。 处理图像时,用户会进行一系列交互。 优选地,这被标准化以确保再现性和准确性。 然而,用户所需的一系列交互可能取决于用户的需求,正在处理的图像或甚至取决于用户的偏好。 本发明提供一种装置,其能够处理复杂的图像处理要求,在图像可视化过程中提供标准化的一系列步骤或轨迹,并且如果需要允许用户偏离该标准轨迹。 这加速并简化了用户在不同图像上执行已知任务时所需的交互。 当用户执行不熟悉的任务时,它还提供了有价值的帮助,从而避免了错误,例如图像采集期间的不正确辐射水平,这可能在医学成像环境中产生严重后果。
    • 5. 发明申请
    • PREDICTION OF CARDIAC SHAPE BY A MOTION MODEL
    • 运动模型预测心脏形态
    • WO2008004171A2
    • 2008-01-10
    • PCT/IB2007/052559
    • 2007-07-02
    • PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHKONINKLIJKE PHILIPS ELECTRONICS N.V.VON BERG, JensLORENZ, Cristian
    • VON BERG, JensLORENZ, Cristian
    • G06T7/00G06T7/20A61B5/00
    • G06T7/33G06T7/20G06T2207/10072G06T2207/30048
    • The invention relates to a system (100) for propagating a model mesh based on a first mean model mesh and on a second mean model mesh, the system comprising: a registration unit (110) for computing a registration transformation for registering the first model mesh with the first mean model mesh; a forward transformation unit (120) for transforming the model mesh into a registered model mesh using the registration transformation; a computation unit (130) for computing a propagation field for propagating the registered model mesh, the propagation field comprising vectors of displacements of vertices of the second mean model mesh relative to respective vertices of the first mean model mesh; a propagation unit (140) for transforming the registered model mesh into the propagated registered model mesh based on applying the vertex displacement vectors comprised in the propagation field to respective vertices of the registered model mesh; and an inverse transformation unit (150) for transforming the propagated registered model mesh into the propagated model mesh using the inverse of the registration transformation, thereby propagating the model mesh. Using the propagation field comprising vectors of displacements of vertices of the second mean model mesh relative to respective vertices of the first mean model mesh improves modeling motion of anatomical shapes. Advantageously, the propagation field of vertex displacement vectors is straightforward to compute and to apply.
    • 本发明涉及一种用于基于第一平均模型网格和第二平均模型网格传播模型网格的系统(100),该系统包括:注册单元(110),用于计算用于注册第一模型网格的注册变换 用第一个平均模型网格; 用于使用所述注册变换将模型网格变换为注册模型网格的正向变换单元(120) 计算单元(130),用于计算用于传播所述注册的模型网格的传播场,所述传播场包括相对于所述第一平均模型网格的相应顶点的所述第二平均模型网格的顶点的位移的向量; 传播单元,用于通过将包含在传播场中的顶点位移矢量应用于注册的模型网格的各顶点,将登记的模型网格变换为传播的注册模型网格; 以及逆变换单元(150),用于使用所述配准变换的逆来将所述传播的注册模型网格变换为所述传播的模型网格,从而传播所述模型网格。 使用包括第二平均模型网格的顶点的位移矢量相对于第一平均模型网格的各个顶点的传播场改进了解剖形状的建模运动。 有利地,顶点位移矢量的传播场是直接计算和应用的。
    • 9. 发明申请
    • BONE SUPPRESSION IN X-RAY RADIOGRAMS
    • 在X射线放射治疗中的骨抑制
    • WO2011077334A1
    • 2011-06-30
    • PCT/IB2010/055876
    • 2010-12-16
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHVON BERG, JensNEITZEL, Ulrich
    • VON BERG, JensNEITZEL, Ulrich
    • G06T7/00
    • G06T7/0083A61B6/5258G06T7/12G06T2207/10116G06T2207/30008
    • The invention relates to a system (100) for extracting an object (Ob) from a source image, said object being delineated by a contour (C), the system (100) comprising a gradient unit (110) for computing the source image gradient field, based on the source image, a smoothing unit (120) for smoothing the source image gradient field, and an integration unit (130) for calculating an object image by integrating the smoothed source image gradient field, thereby extracting the object (Ob) from the source image. At each point of the source image, the smoothing is defined by a 2-dimensional convolution kernel which is a product of a first 1 -dimensional convolution kernel in the first direction substantially parallel to the contour (C), and a second 1 -dimensional convolution kernel in the second direction substantially normal to the contour (C). The first 1-dimensional convolution kernel defines smoothing within each region separated by the contour, while the second 1-dimensional convolution kernel defines smoothing across the contour separating two regions, independently of the orientation of the object and the contour curvature.
    • 本发明涉及一种用于从源图像提取对象(Ob)的系统(100),所述对象由轮廓(C)描绘,所述系统(100)包括梯度单元(110),用于计算源图像梯度 字段,基于源图像,平滑源图像梯度场的平滑单元(120),以及用于通过对平滑源图像梯度场进行积分来计算对象图像的积分单元(130),从而提取对象(Ob) 从源图像。 在源图像的每个点处,平滑由二维卷积核定义,该二维卷积核是在基本上平行于轮廓(C)的第一方向上的第一个1维卷积核的乘积,第二个1维 卷积核心在大致垂直于轮廓(C)的第二方向上。 第一个1维卷积内核定义在由轮廓分隔的每个区域内的平滑,而第二个1维卷积内核定义了分离两个区域的轮廓的平滑,独立于物体的方向和轮廓曲率。