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    Method and apparatus for correcting multi-modality imaging data
    1.
    发明授权
    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：US08553959B2

    公开(公告)日：2013-10-08

    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： G06K9/00

    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。

    Method and Apparatus for Correcting Multi-Modality Imaging Data
    2.
    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 NOISE ESTIMATION FOR MULTI-RESOLUTION ANISOTROPIC DIFFUSION FILTERING
    5.
    发明申请
    METHODS AND APPARATUS FOR NOISE ESTIMATION FOR MULTI-RESOLUTION ANISOTROPIC DIFFUSION FILTERING 有权
    用于多分辨方差扩散滤波的噪声估计的方法和装置

    公开(公告)号：US20090232269A1

    公开(公告)日：2009-09-17

    申请号：US12049128

    申请日：2008-03-14

    申请人： Jiang Hsieh ,  Jean-Baptiste Thibault

    发明人： Jiang Hsieh ,  Jean-Baptiste Thibault

    IPC分类号： A61B6/00

    CPC分类号： A61B6/032 ,  A61B6/4021 ,  A61B6/405 ,  A61B6/482 ,  G06T5/002 ,  G06T5/20 ,  G06T5/50 ,  G06T2200/12 ,  G06T2207/10081 ,  G06T2207/30056

    摘要： A method for reducing noise in a computed tomographic (CT) image includes acquiring both a first set of projection views and a second set of projection views, wherein for each projection view in the first set of projection views there is an associated projection view in the second set of projection views representing the same object scanned at substantially the same time from substantially the same position. The method further includes reconstructing the first set of projection views and the associated second set of projection views to obtain a first image and a second image, respectively. Next, the first image and the second image are combined to obtain a noise map and an amount of noise in a product image is estimated utilizing the noise map. The method also includes filtering using the noise map to perform noise reduction.

    摘要翻译： 一种用于减少计算机断层摄影（CT）图像中的噪声的方法包括获取第一组投影视图和第二组投影视图，其中对于第一组投影视图中的每个投影视图，在 第二组投影视图表示在基本相同的位置上基本相同的时间扫描的相同对象。 该方法还包括重建第一组投影视图和相关联的第二组投影视图，以分别获得第一图像和第二图像。 接下来，组合第一图像和第二图像以获得噪声图，并且利用噪声图来估计产品图像中的噪声量。 该方法还包括使用噪声图进行滤波以执行降噪。

    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。