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1.发明授权公开(公告)号：US07227149B2
公开(公告)日：2007-06-05
申请号：US11026236
申请日：2004-12-30
申请人： Charles William Stearns , David Leo McDaniel , John Jay Williams , Alexander Ganin , Ravindra Mohan Manjeshwar , Floribertus Philippus Martinus Heukensfeldt Jansen , Yiping Shao
发明人： Charles William Stearns , David Leo McDaniel , John Jay Williams , Alexander Ganin , Ravindra Mohan Manjeshwar , Floribertus Philippus Martinus Heukensfeldt Jansen , Yiping Shao
IPC分类号： G01T1/164
CPC分类号： G01T1/2985
摘要： Methods and systems for controlling a positron emission tomography (PET) system are provided. The method includes receiving timing information from a PET system during an imaging scan using the PET system. The method further includes processing the received timing information and timing bias information relating to the PET system to control the PET system.
摘要翻译： 提供了用于控制正电子发射断层摄影（PET）系统的方法和系统。 该方法包括在使用PET系统的成像扫描期间从PET系统接收定时信息。 该方法还包括处理接收到的定时信息和与PET系统有关的定时偏差信息以控制PET系统。
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公开(公告)号：US07129495B2
公开(公告)日：2006-10-31
申请号：US10986792
申请日：2004-11-15
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。
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公开(公告)号：US06661866B1
公开(公告)日：2003-12-09
申请号：US10064912
申请日：2002-08-28
申请人： Mark Kenneth Limkeman , Alexander Ganin , Charles William Stearns , David Leo McDaniel , Robert Franklin Senzig
发明人： Mark Kenneth Limkeman , Alexander Ganin , Charles William Stearns , David Leo McDaniel , Robert Franklin Senzig
IPC分类号： G01N2300
CPC分类号： A61B6/032 , A61B6/027 , A61B6/037 , A61B6/4014 , A61B6/4028 , A61B6/482 , A61B6/5235
摘要： A combined emission-transmission imaging apparatus, the apparatus comprising oppositely facing first and second photon detector segments disposed on opposite sides of an imaging area and defining the imaging area there between and a radiation source disposed adjacent and outside the imaging area and adjacent at least one of the detector segments, the source generating a fan beam of radiation that emanates from a focal point and juxtaposed such that the fan beam is directed along a trajectory through the imaging area and toward the other of the detector segments, wherein the segments collect both emission and transmission radiation.
摘要翻译： 一种组合发射透射成像装置，该装置包括相对面对的第一和第二光子检测器部分，其设置在成像区域的相对侧上并且限定其间的成像区域和与成像区域相邻和偏离地设置的至少一个 所述源产生从焦点发出并且并置的扇形辐射束，使得所述扇形束沿着轨迹穿过所述成像区域并朝向所述检测器段中的另一个，其中所述段收集两个发射 和透射辐射。
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4.发明授权公开(公告)号：US07301144B2
公开(公告)日：2007-11-27
申请号：US11025233
申请日：2004-12-29
申请人： John Jay Williams , Alexander Ganin , Charles William Stearns , Yiping Shao , Floribertus Philippus Martinus Heukensfeldt Jansen , Ravindra Mohan Manjeshwar
发明人： John Jay Williams , Alexander Ganin , Charles William Stearns , Yiping Shao , Floribertus Philippus Martinus Heukensfeldt Jansen , Ravindra Mohan Manjeshwar
CPC分类号： G01T1/2985
摘要： Methods and systems for calibrating a positron emission tomography (PET) system are provided. The method includes determining at least one non-acquisition time period for the PET system. The method further includes automatically acquiring calibration data during the at least one non-acquisition time period.
摘要翻译： 提供了用于校正正电子发射断层摄影（PET）系统的方法和系统。 该方法包括确定PET系统的至少一个非获取时间段。 所述方法还包括在所述至少一个非采集时段期间自动获取校准数据。
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公开(公告)号：US20100116994A1
公开(公告)日：2010-05-13
申请号：US12270437
申请日：2008-11-13
CPC分类号： G01T1/1648 , G01T1/1611
摘要： A method and apparatus are provided for correcting primary and secondary emission data. The method includes obtaining an emission data set having primary and secondary emission data representative of primary and secondary emission particles emitting from a region of interest and applying a scatter correction model to the emission data set to derive an estimated scatter vector. The method also includes comparing the emission data set to the estimated scatter vector to identify an amount of secondary emission data in the emission data set and correcting the emission data set based on the amount of secondary emission data identified in the comparing operation.
摘要翻译： 提供了一种用于校正一次和二次发射数据的方法和装置。 该方法包括获得具有代表从感兴趣区域发射的初级和次级发射粒子的初级和次级发射数据的发射数据集，并向发射数据集应用散射校正模型以导出估计的散射矢量。 该方法还包括将发射数据集与估计的散射矢量进行比较，以识别发射数据组中的二次发射数据的量，并且基于在比较操作中识别的二次发射数据的量来校正发射数据集。
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公开(公告)号：US08017914B2
公开(公告)日：2011-09-13
申请号：US12270437
申请日：2008-11-13
IPC分类号： G01T1/166
CPC分类号： G01T1/1648 , G01T1/1611
摘要： A method and apparatus are provided for correcting primary and secondary emission data. The method includes obtaining an emission data set having primary and secondary emission data representative of primary and secondary emission particles emitting from a region of interest and applying a scatter correction model to the emission data set to derive an estimated scatter vector. The method also includes comparing the emission data set to the estimated scatter vector to identify an amount of secondary emission data in the emission data set and correcting the emission data set based on the amount of secondary emission data identified in the comparing operation.
摘要翻译： 提供了一种用于校正一次和二次发射数据的方法和装置。 该方法包括获得具有代表从感兴趣区域发射的初级和次级发射粒子的初级和次级发射数据的发射数据集，并向发射数据集应用散射校正模型以导出估计的散射矢量。 该方法还包括将发射数据集与估计的散射矢量进行比较，以识别发射数据组中的二次发射数据的量，并且基于在比较操作中识别的二次发射数据的量来校正发射数据集。
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7.发明授权Method and system for normalization of a positron emission tomography system 有权正电子发射断层扫描系统的归一化方法和系统公开(公告)号：US07129497B2
公开(公告)日：2006-10-31
申请号：US10843503
申请日：2004-05-11
IPC分类号： G01T1/164
CPC分类号： G01T1/2985 , G01T1/171
摘要： A method and system for normalization of a positron emission tomography system are provided. The method includes determining a plurality of block busy fractions for a positron emission tomography system and using the determined block busy fractions to provide correction during normalization of the positron emission tomography system.
摘要翻译： 提供了正电子发射断层摄影系统的归一化方法和系统。 该方法包括确定用于正电子发射断层摄影系统的多个块繁忙分数，并且使用确定的块繁忙分数来在正电子发射断层摄影系统的归一化期间提供校正。
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公开(公告)号：US07412280B2
公开(公告)日：2008-08-12
申请号：US10611296
申请日：2003-07-01
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。
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9.发明申请APPARATUS AND METHODS FOR DETERMINING A BOUNDARY OF AN OBJECT FOR POSITRON EMISSION TOMOGRAPHY SCATTER CORRECTION 有权用于确定POSI发射平面扫描校正的对象边界的装置和方法公开(公告)号：US20110150306A1
公开(公告)日：2011-06-23
申请号：US12643735
申请日：2009-12-21
申请人： Steven Gerard Ross , Timothy Wayne Deller , Ravindra Mohan Manjeshwar , Scott David Wollenweber , Charles William Stearns
发明人： Steven Gerard Ross , Timothy Wayne Deller , Ravindra Mohan Manjeshwar , Scott David Wollenweber , Charles William Stearns
CPC分类号： A61B6/032 , A61B6/037 , A61B6/5211 , G01T1/1611 , G01T1/2985 , G06T11/005
摘要： Apparatus and methods for determining a boundary of an object for positron emission tomography (PET) scatter correction are provided. One method includes obtaining positron emission tomography (PET) data and computed tomography (CT) data for an object. The PET data and CT data is acquired from an imaging system. The method further includes determining a PET data boundary of the object based on the PET data and determining a CT data boundary of the object based on the CT data. The method further includes determining a combined boundary for PET scatter correction. The combined boundary encompasses the PET data boundary and the CT data boundary.
摘要翻译： 提供了用于确定正电子发射断层摄影（PET）散射校正物体边界的装置和方法。 一种方法包括获得对象的正电子发射断层摄影（PET）数据和计算机断层摄影（CT）数据。 从成像系统获取PET数据和CT数据。 该方法还包括基于PET数据确定对象的PET数据边界，并且基于CT数据确定对象的CT数据边界。 该方法还包括确定PET散射校正的组合边界。 组合边界包含PET数据边界和CT数据边界。
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公开(公告)号：US20080240335A1
公开(公告)日：2008-10-02
申请号：US11731612
申请日：2007-03-30
申请人： Ravindra Mohan Manjeshwar , Floribertus Philippus Martinus Henkensfeldt Jansen , James William Hugg , Charles William Stearns
发明人： Ravindra Mohan Manjeshwar , Floribertus Philippus Martinus Henkensfeldt Jansen , James William Hugg , Charles William Stearns
IPC分类号： A61B6/00
CPC分类号： A61B6/032 , A61B6/037 , A61B6/469 , G06T11/006 , G06T2211/424 , G06T2211/432
摘要： Methods for performing image reconstruction that include deriving background projection data for an area outside a targeted field of view of a tomographic image, and reconstructing the tomographic image of the targeted field of view, wherein the background projection data is used in the reconstruction. Methods for selecting a reconstruction methodology that include determining a number of pixels in a reconstructed image for a first reconstruction methodology, determining a number of pixels in a reconstructed image for a second reconstruction methodology, comparing the number of pixels for the first reconstruction methodology and the number of pixels for the second reconstruction methodology, and selecting the reconstruction methodology for image reconstruction based on the comparison of the number of pixels. Imaging systems implementing these methods are also provided.
摘要翻译： 用于执行图像重建的方法，包括导出用于断层图像的目标视场外的区域的背景投影数据，以及重构所述目标视场的断层图像，其中所述背景投影数据用于所述重建。 用于选择重建方法的方法，所述重建方法包括确定用于第一重建方法的重建图像中的像素数量，确定用于第二重建方法的重建图像中的像素数量，将第一重建方法的像素数与 用于第二重建方法的像素数量，以及基于像素数目的比较来选择用于图像重建的重建方法。 还提供了实现这些方法的成像系统。
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