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    METHOD FOR TUBE SPIT CORRECTION BASED ON HIGH VOLTAGE OUTPUT
    1.
    发明申请
    METHOD FOR TUBE SPIT CORRECTION BASED ON HIGH VOLTAGE OUTPUT 有权
    基于高压输出的管腔修正方法

    公开(公告)号：US20050047551A1

    公开(公告)日：2005-03-03

    申请号：US10604956

    申请日：2003-08-28

    申请人： Fang Dong ,  Jiang Hsieh ,  Bruce Dunham ,  Clarence Gordon

    发明人： Fang Dong ,  Jiang Hsieh ,  Bruce Dunham ,  Clarence Gordon

    IPC分类号： A61B6/03 ,  G01D18/00 ,  H05G1/00 ,  H05G1/26

    CPC分类号： H05G1/265 ,  A61B6/03

    摘要： The present invention provides a method to detect tube spits and to reduce spit related artifacts in a computed tomography imaging system. A way of detecting tube spit is to monitor the generator kilovolt or milliamp waveforms. Changes in kV waveform follow closely with those in offset-corrected projection data. If a tube-spit event is not detected, processing proceeds without tube spit correction. If a tube-spit event is detected, a tube spit correction is performed. The objective of tube-spit correction is to remove image artifacts due to the occurrence of a tube-spit event.

    摘要翻译： 本发明提供了一种在计算机断层成像系统中检测管唾液并减少呕吐相关赝像的方法。 检测管唾液的一种方法是监测发生器千伏或毫安波形。 kV波形的变化与偏移校正投影数据中的变化密切相关。 如果没有检测到管痰事件，则处理过程不进行管口修复。 如果检测到管痰事件，则执行管痰修正。 管道修正的目的是消除由于管it事件的发生引起的图像伪影。

    Methods and apparatus for hybrid cone beam image reconstruction
    2.
    发明授权
    Methods and apparatus for hybrid cone beam image reconstruction 有权
    混合锥束图像重建方法与装置

    公开(公告)号：US08131042B2

    公开(公告)日：2012-03-06

    申请号：US12028543

    申请日：2008-02-08

    申请人： Xiangyang Tang ,  Jiang Hsieh ,  Fang Dong ,  Jiahua Fan ,  Thomas Louis Toth

    发明人： Xiangyang Tang ,  Jiang Hsieh ,  Fang Dong ,  Jiahua Fan ,  Thomas Louis Toth

    IPC分类号： G06K9/00

    CPC分类号： A61B6/032 ,  A61B6/027 ,  G06T11/006 ,  G06T2211/421 ,  Y10S378/901

    摘要： A method for reconstructing an image using an imaging apparatus that includes a radiation source, a detector array, and a computer. The method includes performing a helical scan of an object at a selected helical pitch using the radiation source and detector array to obtain image data, and reconstructing an image of the object utilizing the computer programmed to perform a hybrid cone beam image reconstruction having ray-wise 3D weighting, wherein the weighting is dependent upon both helical pitch and z-distance.

    摘要翻译： 一种使用包括辐射源，检测器阵列和计算机的成像装置重建图像的方法。 该方法包括使用辐射源和检测器阵列以选定的螺距进行物体的螺旋扫描以获得图像数据，以及使用被编程为执行具有射线方向的混合锥形束图像重建的计算机来重建物体的图像 3D加权，其中加权取决于螺距和z距离。

    METHODS AND APPARATUS FOR HYBRID CONE BEAM IMAGE RECONSTRUCTION
    3.
    发明申请
    METHODS AND APPARATUS FOR HYBRID CONE BEAM IMAGE RECONSTRUCTION 有权
    混合光束图像重构的方法和装置

    公开(公告)号：US20090202126A1

    公开(公告)日：2009-08-13

    申请号：US12028543

    申请日：2008-02-08

    申请人： Xiangyang Tang ,  Jiang Hsieh ,  Fang Dong ,  Jiahua Fan ,  Thomas Louis Toth

    发明人： Xiangyang Tang ,  Jiang Hsieh ,  Fang Dong ,  Jiahua Fan ,  Thomas Louis Toth

    IPC分类号： G06K9/00

    CPC分类号： A61B6/032 ,  A61B6/027 ,  G06T11/006 ,  G06T2211/421 ,  Y10S378/901

    摘要： A method for reconstructing an image using an imaging apparatus that includes a radiation source, a detector array, and a computer. The method includes performing a helical scan of an object at a selected helical pitch using the radiation source and detector array to obtain image data, and reconstructing an image of the object utilizing the computer programmed to perform a hybrid cone beam image reconstruction having ray-wise 3D weighting, wherein the weighting is dependent upon both helical pitch and z-distance.

    摘要翻译： 一种使用包括辐射源，检测器阵列和计算机的成像装置重建图像的方法。 该方法包括使用辐射源和检测器阵列以选定的螺距进行物体的螺旋扫描以获得图像数据，以及使用被编程为执行具有射线方向的混合锥形束图像重建的计算机来重建物体的图像 3D加权，其中加权取决于螺距和z距离。

    SYSTEM AND METHOD OF IMAGE ARTIFACT REDUCTION IN FAST KVP SWITCHING CT
    4.
    发明申请
    SYSTEM AND METHOD OF IMAGE ARTIFACT REDUCTION IN FAST KVP SWITCHING CT 有权
    快速KVP切换CT图像缩小的系统和方法

    公开(公告)号：US20110085719A1

    公开(公告)日：2011-04-14

    申请号：US12578886

    申请日：2009-10-14

    申请人： Jiahua Fan ,  Naveen Chandra ,  Andrew Johnson ,  Jiang Hsieh ,  Fang Dong ,  Mary Sue Kulpins ,  Peter Crandall

    发明人： Jiahua Fan ,  Naveen Chandra ,  Andrew Johnson ,  Jiang Hsieh ,  Fang Dong ,  Mary Sue Kulpins ,  Peter Crandall

    IPC分类号： G06K9/00 ,  H05G1/60

    CPC分类号： G06T11/008 ,  G06T2211/408

    摘要： A CT system includes a generator configured to energize an x-ray source to a first kilovoltage (kVp) and to a second kVp, and a computer that is programmed to acquire a first view dataset with the x-ray source energized to the first kVp and a second view dataset with the x-ray source energized to the second kVp, generate a base correction image using the first view dataset and the second view dataset, and reconstruct a pair of base material images from the first view dataset and from the second view dataset. The computer is also programmed to estimate artifact correlation in the pair of base material images using the base correction image, generate a pair of final base material images and a final monochromatic image, and correct one of the pair of final base material images and the final monochromatic image at a keV value using the estimated artifact correlation.

    摘要翻译： CT系统包括发电机，其被配置为将x射线源激励到第一千伏（kVp）和第二kVp;以及计算机，其被编程为获取第一视图数据集，其中x射线源被激励到第一kVp 以及将x射线源激励到第二kVp的第二视图数据集，使用第一视图数据集和第二视图数据集生成基本校正图像，并且从第一视图数据集和第二视图数据集重构一对基本材料图像 查看数据集。 计算机还被编程为使用基本校正图像来估计一对基础材料图像中的伪像相关性，生成一对最终的基底图像和最终的单色图像，并且校正一对最终基底图像和最终的基底图像中的一个 使用估计的伪像相关性，以keV值的单色图像。

    Method and apparatus for improving inner auditory canal images
    5.
    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。

    Method, system and storage medium for reference normalization for blocked reference channels
    7.
    发明申请
    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：US20050226366A1

    公开(公告)日：2005-10-13

    申请号：US10709080

    申请日：2004-04-12

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

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

    IPC分类号： A61B6/00 ,  A61B6/03 ,  G01N23/00 ,  G21K1/12 ,  H05G1/10 ,  H05G1/60

    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。

    System and method of image artifact reduction in fast kVp switching CT
    8.
    发明授权
    System and method of image artifact reduction in fast kVp switching CT 有权
    快速kVp开关CT中图像伪影减少的系统和方法

    公开(公告)号：US08363917B2

    公开(公告)日：2013-01-29

    申请号：US12578886

    申请日：2009-10-14

    申请人： Jiahua Fan ,  Naveen Chandra ,  Andrew Johnson ,  Jiang Hsieh ,  Fang Dong ,  Mary Sue Kulpins ,  Peter Crandall

    发明人： Jiahua Fan ,  Naveen Chandra ,  Andrew Johnson ,  Jiang Hsieh ,  Fang Dong ,  Mary Sue Kulpins ,  Peter Crandall

    IPC分类号： G06K9/00 ,  A61B6/00 ,  H05G1/64

    CPC分类号： G06T11/008 ,  G06T2211/408

    摘要： A CT system includes a generator configured to energize an x-ray source to a first kilovoltage (kVp) and to a second kVp, and a computer that is programmed to acquire a first view dataset with the x-ray source energized to the first kVp and a second view dataset with the x-ray source energized to the second kVp, generate a base correction image using the first view dataset and the second view dataset, and reconstruct a pair of base material images from the first view dataset and from the second view dataset. The computer is also programmed to estimate artifact correlation in the pair of base material images using the base correction image, generate a pair of final base material images and a final monochromatic image, and correct one of the pair of final base material images and the final monochromatic image at a keV value using the estimated artifact correlation.

    摘要翻译： CT系统包括发电机，其被配置为将x射线源激励到第一千伏（kVp）和第二kVp;以及计算机，其被编程为获取第一视图数据集，其中x射线源被激励到第一kVp 以及将x射线源激励到第二kVp的第二视图数据集，使用第一视图数据集和第二视图数据集生成基本校正图像，并且从第一视图数据集和第二视图数据集重构一对基本材料图像 查看数据集。 计算机还被编程为使用基本校正图像来估计一对基础材料图像中的伪像相关性，生成一对最终的基底图像和最终的单色图像，并且校正一对最终基底图像和最终的基底图像中的一个 使用估计的伪像相关性，以keV值的单色图像。

    System and method for buffering real-time streaming content in a peer-to-peer overlay network
    10.
    发明授权
    System and method for buffering real-time streaming content in a peer-to-peer overlay network 失效
    用于在对等覆盖网络中缓存实时流内容的系统和方法

    公开(公告)号：US07672235B1

    公开(公告)日：2010-03-02

    申请号：US11453479

    申请日：2006-06-14

    申请人： Chenghui Lian ,  Fang Dong

    发明人： Chenghui Lian ,  Fang Dong

    IPC分类号： G01R31/08

    CPC分类号： H04L12/66

    摘要： One embodiment provides a system and method for synchronously buffering real-time streaming content in a peer-to-peer overlay network to improve inter-peer-node synchronization. A requesting peer node identifies a partner peer node that transiently stages content segments. The requesting peer node determines the status of its local buffer and sends a request that indicates such status to a partner peer node. After receiving the most recent segment not present in the buffer from the partner peer node, the requesting peer node transiently stages the received segments in the buffer.

    摘要翻译： 一个实施例提供了一种用于在对等覆盖网络中同步缓冲实时流内容以提高对等节点同步的系统和方法。 请求对等节点标识瞬时分段内容段的伙伴对等节点。 请求对等体节点确定其本地缓冲区的状态，并向合作伙伴对等节点发送指示这种状态的请求。 在从伙伴对等节点接收缓冲器中不存在的最新段之后，请求对等节点暂时缓冲缓冲器中接收到的段。