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    Methods and systems for positron emission tomography data correction
    1.
    发明申请
    Methods and systems for positron emission tomography data correction 有权
    正电子发射断层扫描数据校正的方法和系统

    公开(公告)号：US20060081784A1

    公开(公告)日：2006-04-20

    申请号：US10969716

    申请日：2004-10-20

    申请人： Steven Ross ,  Charles Stearns ,  Ravindra Manjeshwar

    发明人： Steven Ross ,  Charles Stearns ,  Ravindra Manjeshwar

    IPC分类号： G01T1/164

    CPC分类号： G06T11/006 ,  G06T2211/424

    摘要： Methods and systems for image overlap correction are provided. The method includes acquiring the emission projection data from a plurality of scan frames that extend across at least a portion of a length of an object being imaged wherein elements of the object lie between a region of overlap between two successive frames. The method further includes iteratively reconstructing a 3D image volume from multi-frame emission projection data by updating an estimate of 3D image volume using emission projection data from the plurality of frames within an iterative reconstruction loop.

    摘要翻译： 提供了图像重叠校正的方法和系统。 该方法包括从多个扫描帧中获取发射投影数据，所述多个扫描帧延伸穿过被成像物体的长度的至少一部分，其中物体的元件位于两个连续帧之间的重叠区域之间。 该方法还包括通过使用来自迭代重建循环内的多个帧的发射投影数据更新3D图像体积的估计来从多帧发射投影数据中迭代重建3D图像体积。

    METHOD AND SYSTEM FOR IMAGING USING A FILTER FOR TIME-OF-FLIGHT PET
    2.
    发明申请
    METHOD AND SYSTEM FOR IMAGING USING A FILTER FOR TIME-OF-FLIGHT PET 失效
    使用过滤器进行成像的方法和系统

    公开(公告)号：US20060102846A1

    公开(公告)日：2006-05-18

    申请号：US10988878

    申请日：2004-11-15

    申请人： Ravindra Manjeshwar ,  Charles Stearns

    发明人： Ravindra Manjeshwar ,  Charles Stearns

    IPC分类号： G01T1/164

    CPC分类号： G06T11/005

    摘要： Methods and systems for imaging by using a filter for Time-Of-Flight Positron Emission Tomography (TOF PET) are described. The described methods of imaging a patient by using a positron emission tomography (PET) system includes acquiring a plurality of frames of sinogram data, filtering the acquired sinogram data and back-projecting the filtered sinogram data to form an output image of the patient. The acquired sinogram data defines a line of response (LOR) and a time-of-flight (TOF) measurement that localizes positron annihilation within the patient. The filtering of the acquired sinogram data is performed using the TOF measurement.

    摘要翻译： 描述了使用飞行时间正电子发射断层扫描（TOF PET）的滤波器进行成像的方法和系统。 所描述的通过使用正电子发射断层摄影（PET）系统对患者进行成像的方法包括获取正弦图数据的多个帧，对所获取的正弦图数据进行滤波，以及反投影过滤的正弦图数据以形成患者的输出图像。 获得的正中图数据定义了定位在患者体内的正电子湮灭的响应线（LOR）和飞行时间（TOF）测量。 使用TOF测量来执行所获取的正弦图数据的滤波。

    Method and system for reconstructing an image in a positron emission tomography (PET) system
    3.
    发明申请
    Method and system for reconstructing an image in a positron emission tomography (PET) system 有权
    用于在正电子发射断层摄影（PET）系统中重建图像的方法和系统

    公开(公告)号：US20060261275A1

    公开(公告)日：2006-11-23

    申请号：US11131149

    申请日：2005-05-17

    申请人： Charles Stearns ,  Ravindra Manjeshwar ,  Floribertus Philippus Heukensfeldt Jansen

    发明人： Charles Stearns ,  Ravindra Manjeshwar ,  Floribertus Philippus Heukensfeldt Jansen

    IPC分类号： G01T1/164

    CPC分类号： G01T1/2985

    摘要： A method and system for reconstructing an image in a time-of-flight (TOF) positron emission tomography (PET) system is provided. The method includes using a reconstructed image to determine predicted timing information. Timing bias data is updated based on received timing information associated with acquired scan data from a PET system and the predicted timing information. The method further includes reconstructing the image, based on the updated timing bias data.

    摘要翻译： 提供了一种用于在飞行时间（TOF）正电子发射断层摄影（PET）系统中重建图像的方法和系统。 该方法包括使用重构图像来确定预测的定时信息。 基于与来自PET系统的获取的扫描数据相关联的接收定时信息和预测的定时信息来更新定时偏差数据。 该方法还包括基于更新的定时偏差数据重建图像。

    Technique for reconstructing PET scan images
    5.
    发明申请
    Technique for reconstructing PET scan images 有权
    PET扫描图像重建技术

    公开(公告)号：US20070040122A1

    公开(公告)日：2007-02-22

    申请号：US11205067

    申请日：2005-08-17

    申请人： Ravindra Manjeshwar ,  Floribertus Heukensfeldt Jansen ,  Charles Stearns

    发明人： Ravindra Manjeshwar ,  Floribertus Heukensfeldt Jansen ,  Charles Stearns

    IPC分类号： G01T1/164

    CPC分类号： G01T1/2985

    摘要： The invention is directed to a technique for reconstructing PET scan images. According to one embodiment, the invention relates to a method for reconstructing PET scan images. The method comprises: detecting a plurality of coincidence events in a PET scanner; storing data associated with the plurality of coincidence events in a chronological list based on a detection time for each of the plurality of coincidence events; generating correction data based on scatter coincidence events and random coincidence events in the plurality of coincidence events; and reconstructing one or more PET scan images based at least in part on the chronological list of data and the correction data.

    摘要翻译： 本发明涉及一种重建PET扫描图像的技术。 根据一个实施例，本发明涉及一种重建PET扫描图像的方法。 该方法包括：在PET扫描器中检测多个符合事件; 基于多个重合事件中的每一个的检测时间，将与所述多个重合事件相关联的数据存储在时序列表中; 基于所述多个重合事件中的分散符合事件和随机符合事件生成校正数据; 以及至少部分地基于时间顺序的数据列表和校正数据重建一个或多个PET扫描图像。

    Method and system for scattered coincidence estimation in a time-of-flight positron emission tomography system
    6.
    发明申请
    Method and system for scattered coincidence estimation in a time-of-flight positron emission tomography system 有权
    飞行时间正电子发射断层扫描系统中分散重合估计的方法和系统

    公开(公告)号：US20060163485A1

    公开(公告)日：2006-07-27

    申请号：US11040088

    申请日：2005-01-21

    申请人： Charles Stearns ,  Ravindra Manjeshwar

    发明人： Charles Stearns ,  Ravindra Manjeshwar

    IPC分类号： G01T1/164

    CPC分类号： G01T1/2985

    摘要： A method and system for controlling a positron emission tomography (PET) system is disclosed. The method includes acquiring image data and time-of-flight information from a PET system during an imaging scan. Further, the method includes performing scatter correction on the image data using the time-of-flight information.

    摘要翻译： 公开了一种用于控制正电子发射断层摄影（PET）系统的方法和系统。 该方法包括在成像扫描期间从PET系统获取图像数据和飞行时间信息。 此外，该方法包括使用飞行时间信息对图像数据执行散射校正。

    Nuclear medicine imaging system and method using multiple types of imaging detectors
    9.
    发明授权
    Nuclear medicine imaging system and method using multiple types of imaging detectors 有权
    核医学成像系统和使用多种成像检测器的方法

    公开(公告)号：US08575555B2

    公开(公告)日：2013-11-05

    申请号：US13077540

    申请日：2011-03-31

    申请人： Kristen Ann Wangerin ,  Evren Asma ,  Jorge Uribe ,  Ravindra Manjeshwar

    发明人： Kristen Ann Wangerin ,  Evren Asma ,  Jorge Uribe ,  Ravindra Manjeshwar

    IPC分类号： G01T1/166

    CPC分类号： G01T1/166 ,  A61B6/037 ,  G01T1/1603 ,  G01T1/1644 ,  G01T1/249

    摘要： A Nuclear Medicine (NM) imaging system and method using multiple types of imaging detectors are provided. One NM imaging system includes a gantry, at least a first imaging detector coupled to the gantry, wherein the first imaging detector is a non-moving detector, and at least a second imaging detector coupled to the gantry, wherein the second imaging detector is a moving detector. The first imaging detector is larger than the second imaging detector and the first and second imaging detectors have different detector configurations. The NM imaging system further includes a controller configured to control the operation of the first and second imaging detectors during an imaging scan of an object to acquire Single Photon Emission Computed Tomography (SPECT) image information such that at least the first imaging detector remains stationary with respect to the gantry during image acquisition.

    摘要翻译： 提供了使用多种成像检测器的核医学（NM）成像系统和方法。 一个NM成像系统包括台架，至少第一成像检测器，其耦合到台架，其中第一成像检测器是非移动检测器，以及耦合到台架的至少第二成像检测器，其中第二成像检测器是 移动探测器。 第一成像检测器大于第二成像检测器，并且第一和第二成像检测器具有不同的检测器配置。 NM成像系统还包括控制器，其被配置为在对象的成像扫描期间控制第一和第二成像检测器的操作，以获取单光子发射计算机断层扫描（SPECT）图像信息，使得至少第一成像检测器保持静止， 在图像采集期间对台架的尊重。

    Method and system for calibrating a time of flight positron emission tomography system
    10.
    发明申请
    Method and system for calibrating a time of flight positron emission tomography system 失效
    校准飞行时间正电子发射断层扫描系统的方法和系统

    公开(公告)号：US20070205368A1

    公开(公告)日：2007-09-06

    申请号：US11786951

    申请日：2007-04-13

    申请人： Floribertus Heukensfeldt Jansen ,  Ravindra Manjeshwar

    发明人： Floribertus Heukensfeldt Jansen ,  Ravindra Manjeshwar

    IPC分类号： G01T1/161

    CPC分类号： G01T1/2985

    摘要： A method and system for calibrating a time of flight (TOF) positron emission tomography (PET) scanner are provided. The method stores acquired scan data from detector pairs including data and timing information. The method further calculates an intensity distribution of emission sources based on the scan data and defines a timing pivot point based on a median of an intensity histogram. The method determines a timing correction for each detector based on the location of the timing pivot point. The positron emission tomography (PET) system further provides a plurality of detectors, used in performing imaging scans, and a processor. The processor is configured to determine a timing correction for each detector.

    摘要翻译： 提供了一种用于校准飞行时间（TOF）正电子发射断层摄影（PET）扫描仪的方法和系统。 该方法存储来自检测器对的获取的扫描数据，包括数据和定时信息。 该方法还基于扫描数据计算发射源的强度分布，并且基于强度直方图的中值来定义定时枢轴点。 该方法基于定时枢轴点的位置确定每个检测器的定时校正。 正电子发射断层摄影（PET）系统还提供用于执行成像扫描的多个检测器和处理器。 处理器被配置为确定每个检测器的定时校正。