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43 条记录 (耗时 0.024 秒)

    Method and Apparatus for Correcting Multi-Modality Imaging Data
    33.
    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。

    Systems and methods for analyzing an abnormality of an object
    34.
    发明授权
    Systems and methods for analyzing an abnormality of an object 有权
    用于分析物体异常的系统和方法

    公开(公告)号：US07412280B2

    公开(公告)日：2008-08-12

    申请号：US10611296

    申请日：2003-07-01

    申请人： Sarah Rose Hertel ,  Stanley H. Fox ,  Alexander Ganin ,  Charles William Stearns

    发明人： Sarah Rose Hertel ,  Stanley H. Fox ,  Alexander Ganin ,  Charles William Stearns

    IPC分类号： A61B5/05 ,  A61B6/00

    CPC分类号： G06T7/0012 ,  A61B6/032 ,  A61B6/037 ,  A61B6/5235 ,  G06T7/30

    摘要： In one embodiment, a method for analyzing at least one abnormality of an object is described. The method includes obtaining a first image containing an abnormality using a first modality, obtaining a second image containing the abnormality using a second modality, selecting a first region of interest located within the first image, determining an anatomical size of the abnormality based on the first region of interest in the first image, and determining a relative metabolic activity based on a second region of interest within the second image.

    摘要翻译： 在一个实施例中，描述了用于分析对象的至少一个异常的方法。 该方法包括使用第一模式获得包含异常的第一图像，使用第二模式获得包含异常的第二图像，选择位于第一图像内的第一感兴趣区域，基于第一模式确定异常的解剖尺寸 第一图像中的感兴趣区域，以及基于第二图像内的第二感兴趣区域确定相对代谢活动。

    Systems and methods for attenuation compensation in nuclear medicine imaging based on emission data
    35.
    发明授权
    Systems and methods for attenuation compensation in nuclear medicine imaging based on emission data 有权
    基于排放数据的核医学成像中衰减补偿的系统和方法

    公开(公告)号：US08835858B2

    公开(公告)日：2014-09-16

    申请号：US13428840

    申请日：2012-03-23

    申请人： Lana Volokh ,  Yaron Hefetz ,  Alexander Ganin ,  Ravindra Manjeshwar

    发明人： Lana Volokh ,  Yaron Hefetz ,  Alexander Ganin ,  Ravindra Manjeshwar

    IPC分类号： G01T1/164 ,  A61B6/00

    CPC分类号： A61B6/03 ,  A61B6/037 ,  A61B6/483 ,  A61B6/503 ,  A61B6/52 ,  A61B6/5205 ,  A61B6/5258 ,  A61B2576/023 ,  G06T11/005

    摘要： Systems and methods for attenuation compensation in nuclear medicine imaging based on emission data are provided. One method includes acquiring emission data at a plurality of energy windows for a person having administered thereto a radiopharmaceutical comprising at least one radioactive isotope. The method also includes performing a preliminary reconstruction of the acquired emission data to create one or more preliminary images of a peak energy window and a scatter energy window and determining a body outline of the person from at least one of the reconstructed preliminary image of the peak energy window or of the scatter energy window. The method further includes identifying a heart contour and segmenting at least the left lung. The method additionally includes defining an attenuation map based on the body outline and segmented left lung and reconstructing an image of a region of interest of the person using an iterative joint estimation reconstruction.

    摘要翻译： 提供了基于发射数据的核医学成像中衰减补偿的系统和方法。 一种方法包括在给予其的人的多个能量窗口上获取包含至少一种放射性同位素的放射性药物的排放数据。 该方法还包括执行所获取的排放数据的初步重建以创建峰值能量窗口和散射能量窗口的一个或多个初步图像，并且从峰值的重建初步图像中的至少一个中确定人物轮廓线 能量窗或散射能窗。 所述方法还包括识别心脏轮廓并分割至少左肺。 该方法还包括基于身体轮廓和分割的左肺定义衰减图，并且使用迭代联合估计重建来重建人的感兴趣区域的图像。

    Method and apparatus for correcting multi-modality imaging data
    36.
    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。

    SYSTEM, METHOD AND APPARATUS FOR CANCER IMAGING
    39.
    发明申请
    SYSTEM, METHOD AND APPARATUS FOR CANCER IMAGING 审中-公开
    用于癌症成像的系统，方法和装置

    公开(公告)号：US20080146914A1

    公开(公告)日：2008-06-19

    申请号：US11612727

    申请日：2006-12-19

    申请人： Jason Andrew Polzin ,  Ralph Eugene Hurd ,  Alexander Ganin ,  Hari Hariharan

    发明人： Jason Andrew Polzin ,  Ralph Eugene Hurd ,  Alexander Ganin ,  Hari Hariharan

    IPC分类号： A61B5/055

    CPC分类号： A61B5/055 ,  A61B5/0035 ,  A61B6/037 ,  A61B6/4417 ,  A61B6/5247

    摘要： A method for imaging cancer using a combined PET-MRI system takes advantage of the performance characteristics for both PET and MRI in the context of cancer imaging. MRI is used to assess a large area of the body with high sensitivity for cancer and PET is then used in localized areas of concern to provide physiological information. Optionally, MRI may also then be used to re-scan the localized areas of concern with high spatial resolution and additional tissue contrasts to provide anatomical information and soft tissue contrast to supplement the PET information. The use of a combined PET-MRI system ensures that the imaging data from both modalities is accurately referenced to the same locations in the body.

    摘要翻译： 使用组合PET-MRI系统对癌症进行成像的方法在癌症成像的背景下利用PET和MRI两者的性能特征。 MRI用于对癌症的高灵敏度的大面积身体进行评估，然后将PET用于关注的局部区域以提供生理信息。 可选地，MRI还可用于重新扫描具有高空间分辨率和附加组织对比度的局部区域，以提供解剖信息和软组织对比度来补充PET信息。 使用组合的PET-MRI系统确保来自两种模式的成像数据准确地参考身体中相同的位置。

    Method and apparatus for timing calibration in a PET scanner
    40.
    发明授权
    Method and apparatus for timing calibration in a PET scanner 失效
    PET扫描仪中定时校准的方法和装置

    公开(公告)号：US07129495B2

    公开(公告)日：2006-10-31

    申请号：US10986792

    申请日：2004-11-15

    申请人： John Jay Williams ,  Charles William Stearns ,  David Leo McDaniel ,  Alexander Ganin

    发明人： John Jay Williams ,  Charles William Stearns ,  David Leo McDaniel ,  Alexander Ganin

    IPC分类号： G01T1/164

    CPC分类号： G01T1/172 ,  G01T1/2985

    摘要： The invention is directed to a method and apparatus for timing calibration in a PET scanner. According to one embodiment, the invention relates to a method for timing calibration in a PET scanner having a plurality of scintillator blocks. The method comprises: detecting, in a first scintillator block, a first radiation event, wherein the first scintillator block time-stamps the first radiation event; detecting, in a second scintillator block that is adjacent to the first scintillator block, a second radiation event that corresponds to the first radiation event, wherein the second scintillator block time-stamps the second radiation event; and determining a timing characteristic of the first scintillator block with respect to the second scintillator block based on a comparison between the time-stamps of the first radiation event and the second radiation event.

    摘要翻译： 本发明涉及一种用于在PET扫描仪中定时校准的方法和装置。 根据一个实施例，本发明涉及一种具有多个闪烁体块的PET扫描器中的定时校准方法。 该方法包括：在第一闪烁体块中检测第一辐射事件，其中第一闪烁体块对第一辐射事件进行时间戳; 在与所述第一闪烁体块相邻的第二闪烁器块中检测对应于所述第一辐射事件的第二辐射事件，其中所述第二闪烁体块对所述第二辐射事件进行时间戳; 以及基于所述第一辐射事件和所述第二辐射事件的时间戳之间的比较来确定所述第一闪烁体块相对于所述第二闪烁体块的定时特性。