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    Method of and software for conducting motion correction in tomographic scanning and system for tomographic scanning using the method
    2.
    发明授权
    Method of and software for conducting motion correction in tomographic scanning and system for tomographic scanning using the method 失效
    用于在层析扫描中进行运动校正的方法和软件以及使用该方法进行断层扫描的系统

    公开(公告)号：US07923690B2

    公开(公告)日：2011-04-12

    申请号：US11917179

    申请日：2006-06-09

    申请人： Kris Filip Johan Jules Thielemans

    发明人： Kris Filip Johan Jules Thielemans

    IPC分类号： G01T1/29

    CPC分类号： G01T1/1647

    摘要： During data acquisition in a tomographic scan of a subject unscattered events and scatter events are collected. The data are corrected for the scatter events and movement of the subject during the scan. A scatter estimate is derived for use in the reconstruction of an image of the subject; a first step in the derivation has a first dependence on the movement of the subject. The image of the subject is derived from the detected events using the scatter estimate; a second step in this derivation has a second dependence on the movement of the subject, the dependence being different from that of the first step.

    摘要翻译： 在收集主题未分散事件和分散事件的断层扫描中的数据采集期间。 校正扫描过程中的物体的散射事件和移动的数据。 导出用于重建受试者图像的散射估计值; 推导的第一步首先依赖于受试者的运动。 使用散点估计从检测到的事件导出受试者的图像; 该推导的第二步骤对受试者的移动具有第二依赖性，该依赖性与第一步骤的依赖性不同。

    METHODS AND SYSTEMS FOR SCATTER ESTIMATION IN POSITRON EMISSION TOMOGRAPHY
    4.
    发明申请
    METHODS AND SYSTEMS FOR SCATTER ESTIMATION IN POSITRON EMISSION TOMOGRAPHY 有权
    方法和系统在排气排放测量中的散射估计

    公开(公告)号：US20130026370A1

    公开(公告)日：2013-01-31

    申请号：US13191205

    申请日：2011-07-26

    申请人： Hua Qian ,  Ravindra Mohan Manjeshwar ,  Kris Filip Johan Jules Thielemans

    发明人： Hua Qian ,  Ravindra Mohan Manjeshwar ,  Kris Filip Johan Jules Thielemans

    IPC分类号： G01T1/164

    CPC分类号： G01T1/1615 ,  A61B6/037 ,  G06T11/005

    摘要： Methods and systems for multiple scatter estimation in Positron Emission Tomography (PET) are provided. One method includes determining attenuation sinograms and determining a varying convolution kernel as a function of the attenuation sinograms, wherein the kernel varies in amplitude and width over a radial length of a PET imaging system. The method also includes using the varying convolution kernel to estimate multiple PET scatter.

    摘要翻译： 提供了正电子发射断层扫描（PET）中多重散射估计的方法和系统。 一种方法包括确定衰减正弦图并确定作为衰减正弦图的函数的变化的卷积核，其中所述核在PET成像系统的径向长度上的幅度和宽度上变化。 该方法还包括使用变化的卷积核估计多个PET散射。

    Method of and software for calculating a scatter estimate for tomographic scanning and system for tomographic scanning
    5.
    发明授权
    Method of and software for calculating a scatter estimate for tomographic scanning and system for tomographic scanning 失效
    用于计算层析扫描的散射估计的方法和软件以及用于层析扫描的系统

    公开(公告)号：US07902511B2

    公开(公告)日：2011-03-08

    申请号：US12518334

    申请日：2007-12-18

    申请人： Kris Filip Johan Jules Thielemans ,  Charalampos Panos Tsoumpas ,  Floribertus P. M. Heukensfeldt Jansen

    发明人： Kris Filip Johan Jules Thielemans ,  Charalampos Panos Tsoumpas ,  Floribertus P. M. Heukensfeldt Jansen

    IPC分类号： G01T1/164

    CPC分类号： G01T1/1647 ,  G06T11/005

    摘要： The method calculates a scatter estimate for scatter correction of detection data from a subject in a positron emission tomographic scanner. The detection data represent the scattered events and unscattered events of annihilation photons emitted in the subject. The method uses the following steps: determine an estimate of the unscattered events; determine a simulation of the scattered events; determine a value of a scaling factor by fitting the sum of the estimate of the unscattered events and a product of the scaling factor and the simulation of the scattered events to the detection data; and determine the scatter estimate as the product of the scaling factor having said value and the simulation of the scattered events.

    摘要翻译： 该方法计算用于正电子发射断层摄影扫描仪中来自被摄体的检测数据的散射校正的散射估计。 检测数据表示在受试者中发射的湮灭光子的分散事件和不受散射的事件。 该方法使用以下步骤：确定未分散事件的估计; 确定分散事件的模拟; 通过将未散射事件的估计和缩放因子的乘积和分散事件的模拟的和拟合到检测数据来确定缩放因子的值; 并将散射估计确定为具有所述值的缩放因子与散射事件的模拟的乘积。

    Method of and Software for Calculating a Scatter Estimate for Tomographic Scanning and System for Tomographic Scanning
    6.
    发明申请
    Method of and Software for Calculating a Scatter Estimate for Tomographic Scanning and System for Tomographic Scanning 失效
    用于计算层析扫描的分散估计的方法和软件以及用于层析扫描的系统

    公开(公告)号：US20080224050A1

    公开(公告)日：2008-09-18

    申请号：US11994580

    申请日：2006-07-07

    申请人： Kris Filip Johan Jules Thielemans ,  Charalampus Tsoumpas

    发明人： Kris Filip Johan Jules Thielemans ,  Charalampus Tsoumpas

    IPC分类号： G01T1/29 ,  G01T1/00

    CPC分类号： G01T1/2985 ,  A61B6/037 ,  G01T1/1647

    摘要： The method calculates a scatter estimate for annihilation photons in a subject having a distribution of attenuation. The method can be used for scatter correction of detection data from a positron emission tomographic scanner. The method uses the following steps: —select a first scatter point S1 and a second scatter point S2, —determine a first scatter probability for scattering of a photon at scatter point S1 and a second scatter probability for scattering of a photon at scatter point S2, —determine an integral of the attenuation over a line connecting S1 and S2, —multiply the integral and the scatter probabilities and use the product in the calculation of the scatter estimate.

    摘要翻译： 该方法计算具有衰减分布的受试者中的湮灭光子的散射估计。 该方法可用于来自正电子发射断层扫描仪的检测数据的散射校正。 该方法使用以下步骤： - 选择第一散射点S 1和第二散射点S 2， - 确定用于在散射处散射光子的第一散射概率 点S 1和散射点S 2 2处的光子的散射的第二散射概率，确定在连接S 1上的线的衰减的积分， / SUB>和S＆lt; 2＆gt;， - 多项式的积分和散布概率，并在散布估计的计算中使用该乘积。

    Method and system for processing gated image data
    8.
    发明授权
    Method and system for processing gated image data 有权
    门控图像数据处理方法及系统

    公开(公告)号：US08569706B2

    公开(公告)日：2013-10-29

    申请号：US13487046

    申请日：2012-06-01

    申请人： Sheshadri Thiruvenkadam ,  Rakesh Mullick ,  Kris Filip Johan Jules Thielemans ,  Srikrishnan Viswanathan

    发明人： Sheshadri Thiruvenkadam ,  Rakesh Mullick ,  Kris Filip Johan Jules Thielemans ,  Srikrishnan Viswanathan

    IPC分类号： G01T1/164

    CPC分类号： A61B6/037 ,  A61B6/503 ,  A61B6/5205 ,  A61B6/5264 ,  A61B6/5288

    摘要： A method for generating an image is provided. The method comprises: acquiring a first set of image data using a first imaging modality; sorting the first set of image data into a plurality of gates to generate a plurality of gated data sets; reconstructing each gated data set to generate a respective gated image for each gated data set; registering the respective gated images to generate a plurality of registered images; and generating a median image from the plurality of registered images, wherein each voxel of the median image is a respective median value of the corresponding voxels of the plurality of registered images.

    摘要翻译： 提供了一种用于生成图像的方法。 该方法包括：使用第一成像模式获取第一组图像数据; 将第一组图像数据分类成多个门以产生多个门控数据集; 重建每个门控数据集以为每个门控数据集生成相应的门控图像; 注册各个门控图像以生成多个登记图像; 以及从所述多个登记图像生成中值图像，其中所述中值图像的每个体素是所述多个登记图像中的相应体素的相应中值。

    METHOD AND SYSTEM FOR PROCESSING GATED IMAGE DATA
    9.
    发明申请
    METHOD AND SYSTEM FOR PROCESSING GATED IMAGE DATA 有权
    用于处理图像数据的方法和系统

    公开(公告)号：US20120305780A1

    公开(公告)日：2012-12-06

    申请号：US13487046

    申请日：2012-06-01

    申请人： Sheshadri THIRUVENKADAM ,  Rakesh Mullick ,  Kris Filip Johan Jules Thielemans ,  Srikrishnan Viswanathan

    发明人： Sheshadri THIRUVENKADAM ,  Rakesh Mullick ,  Kris Filip Johan Jules Thielemans ,  Srikrishnan Viswanathan

    IPC分类号： A61B6/00 ,  G01T1/164

    CPC分类号： A61B6/037 ,  A61B6/503 ,  A61B6/5205 ,  A61B6/5264 ,  A61B6/5288

    摘要： A method for generating an image is provided. The method comprises: acquiring a first set of image data using a first imaging modality; sorting the first set of image data into a plurality of gates to generate a plurality of gated data sets; reconstructing each gated data set to generate a respective gated image for each gated data set; registering the respective gated images to generate a plurality of registered images; and generating a median image from the plurality of registered images, wherein each voxel of the median image is a respective median value of the corresponding voxels of the plurality of registered images.

    摘要翻译： 提供了一种用于生成图像的方法。 该方法包括：使用第一成像模式获取第一组图像数据; 将第一组图像数据分类成多个门以产生多个门控数据集; 重建每个门控数据集以为每个门控数据集生成相应的门控图像; 注册各个门控图像以生成多个登记图像; 以及从所述多个登记图像生成中值图像，其中所述中值图像的每个体素是所述多个登记图像中的相应体素的相应中值。