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    Method and apparatus for timing calibration in a PET scanner
    3.
    发明申请
    Method and apparatus for timing calibration in a PET scanner 失效

    公开(公告)号：US20060102845A1

    公开(公告)日：2006-05-18

    申请号：US10986792

    申请日：2004-11-15

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

    发明人： John Williams ,  Charles Stearns ,  David 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.

    SYSTEMS AND METHODS FOR ATTENUATION COMPENSATION IN NUCLEAR MEDICINE IMAGING BASED ON EMISSION DATA
    5.
    发明申请
    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的衰减补偿系统与方法

    公开(公告)号：US20130248719A1

    公开(公告)日：2013-09-26

    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

    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发射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。

    Systems and methods for attenuation compensation in nuclear medicine imaging based on emission data
    8.
    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。