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353 条记录 (耗时 0.056 秒)

    Method and apparatus for improving inner auditory canal images
    43.
    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 and Apparatus for Correcting Multi-Modality Imaging Data
    44.
    发明申请
    Method and Apparatus for Correcting Multi-Modality Imaging Data 有权
    用于校正多模态成像数据的方法和装置

    公开(公告)号：US20090238427A1

    公开(公告)日：2009-09-24

    申请号：US12053370

    申请日：2008-03-21

    申请人： Jiang Hsieh ,  James George Colsher ,  Albert Henry Lonn ,  Alexander Ganin ,  Jean-Baptiste Thibault

    发明人： Jiang Hsieh ,  James George Colsher ,  Albert Henry Lonn ,  Alexander Ganin ,  Jean-Baptiste Thibault

    IPC分类号： A61B6/00

    CPC分类号： A61B6/032 ,  A61B6/037 ,  A61B6/5235

    摘要： A method for correcting Positron Emission Tomography (PET) data includes adjusting a tube current generated by the CT imaging system to a second tube current value that is less than a first tube current value used to generate diagnostic quality CT images, and imaging the patient with the CT imaging system set at the second tube current value. The method also includes generating a plurality of computed tomography (CT) projection data from the CT imaging system and preprocessing the CT projection data to generate preprocessed CT projection data. The method further includes filtering the preprocessed CT projection data to reduce electronic noise to generate filtered CT projection data, and performing a minus logarithmic operation on the filtered CT projection data to generate the corrected PET data.

    摘要翻译： 用于校正正电子发射断层摄影（PET）数据的方法包括将由CT成像系统产生的管电流调节到小于用于产生诊断质量CT图像的第一管电流值的第二管电流值，以及使患者成像 CT成像系统设置在第二管电流值。 该方法还包括从CT成像系统生成多个计算机断层摄影（CT）投影数据，并预处理CT投影数据以产生预处理的CT投影数据。 该方法还包括对预处理的CT投影数据进行滤波以减少电子噪声以产生经滤波的CT投影数据，以及对经滤波的CT投影数据执行负对数运算以产生经校正的PET数据。

    METHODS AND APPARATUS FOR HYBRID CONE BEAM IMAGE RECONSTRUCTION
    45.
    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。

    Methods and apparatus for reconstruction in helical cone beam volumetric CT
    46.
    发明授权
    Methods and apparatus for reconstruction in helical cone beam volumetric CT 失效
    螺旋锥束体积CT重建方法与装置

    公开(公告)号：US07539281B2

    公开(公告)日：2009-05-26

    申请号：US10966881

    申请日：2004-10-15

    申请人： Xiangyang Tang ,  Jiang Hsieh ,  Roy Arnulf Helge Nilsen

    发明人： Xiangyang Tang ,  Jiang Hsieh ,  Roy Arnulf Helge Nilsen

    IPC分类号： A61B6/03

    CPC分类号： G06T11/006 ,  A61B6/027 ,  G06T2211/416 ,  G06T2211/421 ,  Y10S378/901

    摘要： A method for reconstructing an image of an object utilizing a cone-beam volumetric computed tomographic imaging apparatus includes helically scanning the object with a radiation source utilizing the cone-beam volumetric computed tomographic imaging apparatus, selecting radiation beams emitted by the radiation source passing through a pixel P, a Tam-window, and a Katsevich window, filtering the selected projection data, and reconstructing an image of the object utilizing the filtered selected projection data including projection data within the Katsevich window and outside the Tam-window.

    摘要翻译： 使用锥形束体积计算机断层成像装置重建物体的图像的方法包括利用锥束体积计算机断层成像装置用辐射源对物体进行螺旋扫描，选择通过辐射源的辐射源发射的辐射束 像素P，Tam窗口和Katsevich窗口，对所选择的投影数据进行滤波，并且利用包括Katsevich窗口内和Tam窗口之外的投影数据的滤波的所选择的投影数据来重建对象的图像。

    METHODS AND APPARATUS FOR ARTIFACT REDUCTION
    47.
    发明申请
    METHODS AND APPARATUS FOR ARTIFACT REDUCTION 有权
    减少手艺的方法和装置

    公开(公告)号：US20080292173A1

    公开(公告)日：2008-11-27

    申请号：US12177641

    申请日：2008-07-22

    申请人： Jiang Hsieh ,  Stanley Haim Fox

    发明人： Jiang Hsieh ,  Stanley Haim Fox

    IPC分类号： G06K9/40

    CPC分类号： G06K9/40 ,  A61B6/027 ,  G06T5/002 ,  G06T5/20 ,  G06T2207/10081 ,  G06T2207/30004 ,  Y10S378/901

    摘要： A method for facilitating a reduction in image artifacts is provided. The method includes receiving data regarding a scan of an object, reconstructing a plurality of images using the received data to form a three-dimensional image space, determining an orientation for a maximum intensity pixel operation, locating the maximum intensity pixels within a plurality of ray paths in accordance with the determined orientation, and filtering around each maximum intensity pixel along each ray path.

    摘要翻译： 提供了一种便于减少图像伪影的方法。 该方法包括接收关于对象的扫描的数据，使用所接收的数据重建多个图像以形成三维图像空间，确定最大强度像素操作的取向，将最大强度像素定位在多个射线内 根据确定的方向进行路径，并沿着每个射线路径围绕每个最大强度像素进行滤波。

    Systems, methods and apparatus for specialized filtered back-projection reconstruction for digital tomosynthesis
    48.
    发明授权
    Systems, methods and apparatus for specialized filtered back-projection reconstruction for digital tomosynthesis 有权
    用于数字断层合成的专门滤波反投影重建的系统，方法和装置

    公开(公告)号：US07457451B2

    公开(公告)日：2008-11-25

    申请号：US11950418

    申请日：2007-12-04

    申请人： Jiang Hsieh ,  Stephen W. Metz ,  Gopal B. Avinash ,  Baojun Li ,  John Michael Sabol

    发明人： Jiang Hsieh ,  Stephen W. Metz ,  Gopal B. Avinash ,  Baojun Li ,  John Michael Sabol

    IPC分类号： G06K9/00 ,  G01N23/223

    CPC分类号： G06T11/005 ,  G06T2211/424 ,  G06T2211/436

    摘要： Systems, methods and apparatus are provided through which in one aspect, a three-dimensional (3D) image of an object is constructed from a plurality of two-dimensional (2D) images of the object using a specialized filter. In some embodiments, the specialized filter implements a linear ramp function, a windowing function, and/or a polynomial function. In some embodiments, the 3D image is back-projected from the filtered two-dimensional images, yielding a 3D image that has improved visual distinction of overlapping anatomic structures and reduced blurring.

    摘要翻译： 提供了一种系统，方法和装置，通过该系统，方法和装置，在一个方面，使用专用滤波器从对象的多个二维（2D）图像构建对象的三维（3D）图像。 在一些实施例中，专用滤波器实现线性斜坡函数，加窗函数和/或多项式函数。 在一些实施例中，3D图像从经过滤的二维图像反投影，产生3D重建解剖结构改善的视觉区别并减少模糊。