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    Apparatus and method for determining measure of similarity between images
    41.
    发明申请
    Apparatus and method for determining measure of similarity between images 有权
    用于确定图像之间相似度测量的装置和方法

    公开(公告)号：US20070116341A1

    公开(公告)日：2007-05-24

    申请号：US11654254

    申请日：2007-01-16

    申请人： Dongshan Fu ,  Gopinath Kuduvalli

    发明人： Dongshan Fu ,  Gopinath Kuduvalli

    IPC分类号： G06K9/00

    CPC分类号： A61N5/1049 ,  A61N5/1067 ,  A61N5/107 ,  A61N2005/1061 ,  A61N2005/1062 ,  G01N23/04 ,  G06T7/254 ,  G06T7/32 ,  G06T7/38 ,  G06T2207/10124 ,  G06T2207/30004

    摘要： A method and system is presented in image-guided radiosurgery for determining the measure of similarity of two digital images, for example a 2D x-ray image and a 2D DRR synthesized from 3D scan data. A two-dimensional array of pixel values of a difference image may be formed by subtracting each pixel value of the second image from the corresponding pixel value of the first image. The pattern intensity function may be constructed by taking the summation of functions of the gradients of the difference image. The neighborhood R may be defined so as to allow the gradients of the difference image to be considered in at least one direction.

    摘要翻译： 在图像引导放射外科中提出了一种方法和系统，用于确定两个数字图像的相似度的测量，例如2D X射线图像和从3D扫描数据合成的2D DRR。 可以通过从第一图像的相应像素值中减去第二图像的每个像素值来形成差分图像的像素值的二维阵列。 图案强度函数可以通过取差分图像的梯度的函数的和来构成。 可以定义邻域R以允许在至少一个方向上考虑差分图像的梯度。

    Integrated quality assurance for an image guided radiation treatment delivery system
    42.
    发明申请
    Integrated quality assurance for an image guided radiation treatment delivery system 有权
    图像引导辐射治疗传播系统的综合质量保证

    公开(公告)号：US20070071176A1

    公开(公告)日：2007-03-29

    申请号：US11234708

    申请日：2005-09-23

    申请人： William Main ,  Eric Earnst ,  Gopinath Kuduvalli

    发明人： William Main ,  Eric Earnst ,  Gopinath Kuduvalli

    IPC分类号： G01D18/00

    CPC分类号： A61N5/1048 ,  A61B6/583 ,  A61N2005/1061

    摘要： A method and apparatus for quality assurance of an image guided radiation treatment delivery system. A quality assurance (“QA”) marker is positioned at a preset position under guidance of an imaging guidance system of a radiation treatment delivery system. A radiation beam is emitted from a radiation source of the radiation treatment delivery system at the QA marker. An exposure image of the QA marker due to the radiation beam is generated. The exposure image is then analyzed to determine whether the radiation treatment delivery system is aligned.

    摘要翻译： 一种用于图像引导辐射治疗递送系统的质量保证的方法和装置。 在辐射治疗传送系统的成像引导系统的引导下，质量保证（“QA”）标记位于预设位置。 在QA标记处，辐射束从放射线治疗递送系统的辐射源发射。 产生由于辐射束引起的QA标记的曝光图像。 然后分析曝光图像以确定放射治疗递送系统是否对准。

    Image guided radiosurgery method and apparatus using registration of 2D radiographic images with digitally reconstructed radiographs of 3D scan data
    44.
    发明授权
    Image guided radiosurgery method and apparatus using registration of 2D radiographic images with digitally reconstructed radiographs of 3D scan data 有权
    图像引导放射外科手术方法和装置，使用3D扫描数据的数字重建X射线照片的2D放射照相图像的配准

    公开(公告)号：US08280491B2

    公开(公告)日：2012-10-02

    申请号：US12793621

    申请日：2010-06-03

    申请人： Gopinath Kuduvalli ,  Dongshan Fu ,  Shehrzad Qureshi

    发明人： Gopinath Kuduvalli ,  Dongshan Fu ,  Shehrzad Qureshi

    IPC分类号： A61B5/05

    CPC分类号： A61N5/1049 ,  A61N5/1067 ,  A61N5/107 ,  A61N2005/1061 ,  A61N2005/1062 ,  G01N23/04 ,  G06T7/254 ,  G06T7/32 ,  G06T7/38 ,  G06T2207/10124 ,  G06T2207/30004

    摘要： A set of 2D reconstructed images is generated from a pretreatment 3D scan showing an initial position of a target, wherein the set of 2D reconstructed images corresponds to perturbations from said initial position along fewer than six degrees of freedom. Said set of 2D reconstructed images are registered with one or more 2D x-ray images of said target showing a current position of the target, wherein the registering includes computing a set of 3D transformation parameters that represent a change in position of said target between said initial position of said pretreatment 3D scan and said current position of said 2D x-ray images along six degrees of freedom. A positioning system is instructed to adjust a relative position of a radiosurgical beam generator to said target by an amount prescribed by said 3D transformation parameters, wherein said target is allowed six degrees of freedom of position.

    摘要翻译： 从显示目标的初始位置的预处理3D扫描产生一组2D重建图像，其中所述一组2D重建图像对应于沿着少于6个自由度的所述初始位置的扰动。 所述一组2D重建图像与所述目标的当前位置的一个或多个2D X射线图像一起登记，其中所述注册包括计算一组3D变换参数，所述三维变换参数表示所述目标在所述目标位置之间的位置变化 所述预处理3D扫描的初始位置和所述2D X射线图像的当前位置沿着六个自由度。 指示定位系统将放射外科手术束发生器相对于所述目标的相对位置调整由所述3D变换参数规定的量，其中所述目标被允许六个位置自由度。

    DYNAMIC TRACKING OF SOFT TISSUE TARGETS WITH ULTRASOUND IMAGES, WITHOUT USING FIDUCIAL MARKERS
    46.
    发明申请
    DYNAMIC TRACKING OF SOFT TISSUE TARGETS WITH ULTRASOUND IMAGES, WITHOUT USING FIDUCIAL MARKERS 审中-公开
    具有超声图像的软组织目标的动态跟踪，不使用FIDUCAL MARKERS

    公开(公告)号：US20100183196A1

    公开(公告)日：2010-07-22

    申请号：US12750519

    申请日：2010-03-30

    申请人： Dongshan Fu ,  Gopinath Kuduvalli ,  John Allison

    发明人： Dongshan Fu ,  Gopinath Kuduvalli ,  John Allison

    IPC分类号： G06K9/00

    CPC分类号： A61N5/1049 ,  A61B8/08 ,  A61N5/1067 ,  A61N5/107 ,  A61N2005/1052 ,  A61N2005/1055 ,  A61N2005/1058 ,  A61N2005/1061 ,  A61N2005/1062

    摘要： An apparatus and method of dynamically tracking a soft tissue target with ultrasound images, without the use of fiducial markers. In one embodiment, the apparatus includes an ultrasound imager to generate a reference ultrasound and a first ultrasound image having a soft tissue target, and a processing device coupled to the ultrasound imager to receive the reference ultrasound image and the first ultrasound image, to register the first ultrasound image with the reference ultrasound image, and to determine a displacement of the soft tissue target based on registration of the first ultrasound image with the reference ultrasound image.

    摘要翻译： 用超声图像动态跟踪软组织靶的装置和方法，而不使用基准标记。 在一个实施例中，该装置包括用于产生参考超声的超声波成像器和具有软组织靶的第一超声图像，以及耦合到超声波成像器以接收参考超声图像和第一超声图像的处理装置， 第一超声图像和参考超声图像，并且基于第一超声图像与参考超声图像的配准来确定软组织靶的位移。

    Image enhancement method and system for fiducial-less tracking of treatment targets
    49.
    发明授权
    Image enhancement method and system for fiducial-less tracking of treatment targets 失效
    图像增强方法和系统，用于无基准跟踪治疗目标

    公开(公告)号：US07522779B2

    公开(公告)日：2009-04-21

    申请号：US10881208

    申请日：2004-06-30

    申请人： Dongshan Fu ,  Gopinath Kuduvalli

    发明人： Dongshan Fu ,  Gopinath Kuduvalli

    IPC分类号： G06K9/40

    CPC分类号： G06T5/30 ,  A61B6/505 ,  A61B6/5235 ,  A61N5/1049 ,  A61N2005/1061 ,  A61N2005/1062 ,  G06T5/008 ,  G06T7/33 ,  G06T7/35 ,  G06T7/38 ,  G06T2207/10116 ,  G06T2207/30004

    摘要： A method and system are presented for enhancing one or more images of an object, so as to increase the visibility within the images of one or more structures within the object. The object may be an anatomical region of a patient, and may include one or more reference structures, for example skeletal structures or vertebral structures, and one or more treatment targets, for example tumors or lesions. An operator, for example a top-hat filter operator, selects at least a first neighborhood and a second neighborhood within the images. The operator selects within each neighborhood one or more pixels having an optimal pixel value, and eliminates the remaining pixels in these neighborhoods. When the operator is applied to the selected neighborhoods, only the pixels having the greatest pixel values remain in the selected neighborhoods, and the remaining pixels are eliminated in the selected neighborhoods. As a result, desired features can be located and enhanced in the images.

    摘要翻译： 呈现用于增强对象的一个​​或多个图像的方法和系统，以便增加对象内的一个或多个结构的图像内的可视性。 该对象可以是患者的解剖区域，并且可以包括一个或多个参考结构，例如骨骼结构或椎体结构，以及一个或多个治疗靶，例如肿瘤或病变。 运算符，例如顶帽滤波器运算符，选择图像内的至少第一邻域和第二邻域。 操作者在每个邻域内选择具有最佳像素值的一个或多个像素，并消除这些邻域中的剩余像素。 当操作者被应用于所选择的邻域时，只有具有最大像素值的像素保留在所选择的邻域中，并且在所选择的邻域中消除剩余的像素。 因此，可以在图像中定位和增强期望的特征。