利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

353 条记录 (耗时 0.035 秒)

    Method and apparatus for improving inner auditory canal images
    1.
    发明授权
    Method and apparatus for improving inner auditory canal images 有权
    改善内窥镜影像的方法和装置

    公开(公告)号：US07720270B2

    公开(公告)日：2010-05-18

    申请号：US11302609

    申请日：2005-12-14

    申请人： Jianying Li ,  Jiang Hsieh ,  Fang Frank Dong ,  Thomas John Myers ,  George Edward Seidenschnur

    发明人： Jianying Li ,  Jiang Hsieh ,  Fang Frank Dong ,  Thomas John Myers ,  George Edward Seidenschnur

    IPC分类号： G06K9/00

    CPC分类号： G06K9/00 ,  G06K2209/055

    摘要： Method and apparatus for locally enhancing image data represented as pixels having CT numbers is provided. The image data includes bony structures, and the method comprises segmenting pixels within the image data into areas based on the pixel's CT number. A first area represents a combination of soft tissue and lower density bones and a second area represents higher density bones. A subset of pixels is identified within the first area representative of the lower density bones. An enhancement is applied to the subset of pixels within the first area and to the second area to create an enhanced dataset, and a locally enhanced image is generated based on the image data and the enhanced dataset.

    摘要翻译： 提供了用于局部增强表示为具有CT编号的像素的图像数据的方法和装置。 图像数据包括骨结构，并且该方法包括基于像素的CT数量将图像数据内的像素分割成区域。 第一区域代表软组织和较低密度骨骼的组合，第二区域代表较高密度的骨骼。 在代表较低密度骨骼的第一区域内识别像素的子集。 将增强应用于第一区域内的像素子集和第二区域以创建增强数据集，并且基于图像数据和增强数据集生成局部增强图像。

    Method, system and storage medium for reference normalization for blocked reference channels
    3.
    发明授权
    Method, system and storage medium for reference normalization for blocked reference channels 失效
    阻塞参考通道的参考标准化方法，系统和存储介质

    公开(公告)号：US06996206B2

    公开(公告)日：2006-02-07

    申请号：US10709080

    申请日：2004-04-12

    申请人： Jiang Hsieh ,  Jean-Baptiste Thibault ,  Fang Frank Dong ,  Jian ying Li ,  Edward Chao ,  Scott Matt McOlash

    发明人： Jiang Hsieh ,  Jean-Baptiste Thibault ,  Fang Frank Dong ,  Jian ying Li ,  Edward Chao ,  Scott Matt McOlash

    IPC分类号： A61B6/03

    CPC分类号： A61B6/583 ,  A61B6/032 ,  A61B6/585

    摘要： A method for performing reference normalization for an image created by an imaging system. The imaging system includes a radiation detector array with a right and left edge. The method includes receiving a projection dataset created by the imaging system in response to a varying x-ray tube current. The projection dataset includes a view and predicted fluxes are calculated for the set of reference channels within the view. A right set of reference channels are located proximate at the right edge of the detector array and a left set of reference channels are located proximate to the left edge of the detector array. The method also includes calculating average actual fluxes for the sets of reference channels. Based on the predicted reference fluxes and the average fluxes, a reference correction value for the view is determined. The correction value is applied for the reference correction of the view.

    摘要翻译： 一种用于对由成像系统创建的图像执行参考归一化的方法。 成像系统包括具有左右边缘的辐射检测器阵列。 该方法包括响应于变化的X射线管电流接收由成像系统创建的投影数据集。 投影数据集包括视图，并且为视图内的参考通道集合计算预测通量。 参考通道的右侧集合位于检测器阵列的右边缘附近，并且左组参考通道位于检测器阵列的左边缘附近。 该方法还包括计算参考通道组的平均实际通量。 基于预测的参考通量和平均通量，确定视图的参考校正值。 校正值被应用于视图的参考校正。

    Step-and-shoot cardiac CT imaging
    6.
    发明授权
    Step-and-shoot cardiac CT imaging 有权
    分步心脏CT成像

    公开(公告)号：US07570733B2

    公开(公告)日：2009-08-04

    申请号：US11149993

    申请日：2005-06-10

    申请人： Jiang Hsieh ,  Jianying Li ,  Xiangyang Tang

    发明人： Jiang Hsieh ,  Jianying Li ,  Xiangyang Tang

    IPC分类号： A61B6/00

    CPC分类号： A61B6/503 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4085 ,  A61B6/541 ,  G06T11/005 ,  G06T2211/404 ,  G06T2211/412

    摘要： The present invention is directed to a method and system of blending data acquired from neighboring partial-scans. Data is acquired from an imaging volume in a series of fractional or partial-scans. Each partial-scan samples a fraction of the imaging volume. During reconstruction, data from the partial-scans are combined to compensate for the unsampled portion of the imaging volume that is experienced in any partial-scan alone.

    摘要翻译： 本发明涉及一种混合从相邻部分扫描获得的数据的方法和系统。 在一系列分数或部分扫描中从成像体积获取数据。 每个部分扫描采集成像体积的一部分。 在重构期间，来自部分扫描的数据被组合以补偿仅在任何部分扫描中经历的成像体积的未采样部分。

    Method and apparatus for reducing cone beam artifacts using spatially varying weighting functions
    7.
    发明申请
    Method and apparatus for reducing cone beam artifacts using spatially varying weighting functions 有权
    使用空间变化的加权函数减少锥束伪像的方法和装置

    公开(公告)号：US20070140535A1

    公开(公告)日：2007-06-21

    申请号：US11305929

    申请日：2005-12-19

    申请人： Jianying Li ,  Jiang Hsieh ,  Melissa Vass ,  Xiangyang Tang ,  John Londt ,  Darin Okerlund

    发明人： Jianying Li ,  Jiang Hsieh ,  Melissa Vass ,  Xiangyang Tang ,  John Londt ,  Darin Okerlund

    IPC分类号： G06K9/00

    CPC分类号： A61B6/032 ,  A61B6/027 ,  A61B6/463 ,  A61B6/503 ,  A61B6/583

    摘要： A method for combining images acquired using helical half-scan imaging comprises identifying an image plane within an overlap region comprising data from first and second view streams representative of first and second cycles of acquired image data. The image plane comprises the same anatomical structure. First and second weighting functions are calculated for first and second images based on first and second tube positions of an x-ray tube. The first and second images correspond to the image plane and are from the first and second view streams, respectively. The first and second tube positions also correspond to the image plane. A weighted image is then formed based on the first and second weighting functions and the first and second images.

    摘要翻译： 一种用于组合使用螺旋半扫描成像获取的图像的方法包括在包括表示所获取的图像数据的第一和第二周期的第一和第二视图流的数据的重叠区域内识别图像平面。 图像平面包括相同的解剖结构。 基于X射线管的第一和第二管位置对第一和第二图像计算第一和第二加权函数。 第一和第二图像分别对应于图像平面并且分别来自第一和第二视图流。 第一和第二管位置也对应于图像平面。 然后基于第一和第二加权函数以及第一和第二图像形成加权图像。

    Method and apparatus for improving inner auditory canal images
    8.
    发明申请
    Method and apparatus for improving inner auditory canal images 有权
    改善内窥镜影像的方法和装置

    公开(公告)号：US20070133853A1

    公开(公告)日：2007-06-14

    申请号：US11302609

    申请日：2005-12-14

    申请人： Jianying Li ,  Jiang Hsieh ,  Fang Dong ,  Thomas Myers ,  George Seidenschnur

    发明人： Jianying Li ,  Jiang Hsieh ,  Fang Dong ,  Thomas Myers ,  George Seidenschnur

    IPC分类号： G06K9/00

    CPC分类号： G06K9/00 ,  G06K2209/055

    摘要： Method and apparatus for locally enhancing image data represented as pixels having CT numbers is provided. The image data includes bony structures, and the method comprises segmenting pixels within the image data into areas based on the pixel's CT number. A first area represents a combination of soft tissue and lower density bones and a second area represents higher density bones. A subset of pixels is identified within the first area representative of the lower density bones. An enhancement is applied to the subset of pixels within the first area and to the second area to create an enhanced dataset, and a locally enhanced image is generated based on the image data and the enhanced dataset.

    摘要翻译： 提供了用于局部增强表示为具有CT编号的像素的图像数据的方法和装置。 图像数据包括骨结构，并且该方法包括基于像素的CT数量将图像数据内的像素分割成区域。 第一区域代表软组织和较低密度骨骼的组合，第二区域代表较高密度的骨骼。 在代表较低密度骨骼的第一区域内识别像素的子集。 将增强应用于第一区域内的像素子集和第二区域以创建增强数据集，并且基于图像数据和增强数据集生成局部增强图像。

    METHODS AND APPARATUS FOR CT SMOOTHING TO REDUCE ARTIFACTS
    9.
    发明申请
    METHODS AND APPARATUS FOR CT SMOOTHING TO REDUCE ARTIFACTS 审中-公开
    CT扫描减少手术的方法和设备

    公开(公告)号：US20120275561A1

    公开(公告)日：2012-11-01

    申请号：US13545743

    申请日：2012-07-10

    申请人： Jianying Li ,  Jiang Hsieh

    发明人： Jianying Li ,  Jiang Hsieh

    IPC分类号： G06K9/44 ,  H05G1/60

    CPC分类号： G06T11/005 ,  A61B6/027 ,  G06T11/003 ,  G06T2211/421

    摘要： A method for reconstructing an image of an object includes scanning an object using a computed tomographic (CT) imaging apparatus to acquire projections of the object. A set of thresholds are determined utilizing the projections, and selected smoothing kernels are associated with the thresholds. The method further includes utilizing the smoothing kernels and the projections to produce smoothed projections in accordance with the thresholds and filtering and backprojecting the smoothed projections to generate an image of the object.

    摘要翻译： 用于重建对象的图像的方法包括使用计算机断层摄影（CT）成像设备扫描对象以获取对象的投影。 使用投影来确定一组阈值，并且所选择的平滑内核与阈值相关联。 该方法还包括利用平滑内核和投影来根据阈值产生平滑的投影，并过滤和反投影平滑的投影以生成对象的图像。