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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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3.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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4.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：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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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：US20130334428A1
公开(公告)日：2013-12-19
申请号：US13526130
申请日：2012-06-18
申请人： Chang Lyong Kim , David Leo McDaniel , James Lindgren Malaney , William Todd Peterson , Gary V. McBroom
发明人： Chang Lyong Kim , David Leo McDaniel , James Lindgren Malaney , William Todd Peterson , Gary V. McBroom
CPC分类号： G01T1/1644 , G01T1/247 , G01T1/249
摘要： Methods and systems for signal communication in gamma ray detectors are provided. One gamma ray detector includes a scintillator block having a plurality of scintillator crystals and a plurality of light sensors coupled to the scintillator crystals and having a plurality of microcells. Each of the plurality of light sensors has a first set of signal traces connected to the microcells and a second set of signal traces connected along the first set of signal traces and together forming a signal path to a summing signal trace. Each of the plurality of light sensors also has a pin-out connected to the summing signal trace.
摘要翻译： 提供了用于伽马射线检测器中的信号通信的方法和系统。 一个伽马射线检测器包括具有多个闪烁体晶体的闪烁体块和耦合到闪烁体晶体并具有多个微单元的多个光传感器。 多个光传感器中的每一个具有连接到微小区的第一组信号迹线和沿着第一组信号迹线连接的第二组信号迹线，并且一起形成到求和信号迹线的信号路径。 多个光传感器中的每一个还具有连接到求和信号迹线的引脚输出。
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8.发明申请POSITRON EMISSION TOMOGRPAHY DETECTOR FOR DUAL-MODALITY IMAGING 审中-公开用于双模态成像的POSITRON发射TOMOGRPAHY检测器公开(公告)号：US20130284936A1
公开(公告)日：2013-10-31
申请号：US13459977
申请日：2012-04-30
申请人： Gary V. McBroom , Chang Lyong Kim , David Leo McDaniel , James Lindgren Malaney , William Todd Peterson
发明人： Gary V. McBroom , Chang Lyong Kim , David Leo McDaniel , James Lindgren Malaney , William Todd Peterson
IPC分类号： G01T1/164
CPC分类号： G01R33/481 , G01R33/34046 , G01R33/34076 , G01T1/1603
摘要： A Positron Emission Tomography (PET) detector assembly includes a cold plate having a first side and an opposite second side, the cold plate being fabricated from a thermally conductive and electrically non-conductive material, a plurality of PET detector units coupled to the first side of the cold plate, and a readout electronics section coupled to the second side of the cold plate. A radio frequency (RF) body coil assembly and a dual-modality imaging system are also described herein.
摘要翻译： 正电子发射断层摄影术（PET）检测器组件包括具有第一侧和相对的第二侧的冷板，该冷板由导热和非导电材料制成，多个PET检测器单元联接到第一侧 以及耦合到冷板的第二侧的读出电子部分。 本文还描述了射频（RF）体线圈组件和双模态成像系统。
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公开(公告)号：US06803579B2
公开(公告)日：2004-10-12
申请号：US09966857
申请日：2001-09-28
IPC分类号： G01T1164
CPC分类号： G01T1/17 , A61B6/037 , G01T1/2985
摘要： A method and apparatus for eliminating the picket fence effect in PET scanners where the scanner includes a master clock and an event processing circuit that generates time stamps during each clock cycle, the scanner also including a coincidence detector that compares the time stamps during each clock cycle to identify coincidence events, the method including the steps of, for consecutive master clock cycles, identifying an overlap period that includes a portion of a first of the master cycles adjacent a second of the master cycles, adding an overlap period that occurs during the overlap period to the second of the master cycles to generate an extended cycle, identifying overlap events that occur during the overlap period in the first of the master cycles, copying the overlap events to the overlap period in the extended second cycle and performing a comparison of the events in the extended cycle to identify coincidence event pairs
摘要翻译： 一种用于消除PET扫描仪中的栅栏栅栏效应的方法和装置，其中扫描器包括主时钟和在每个时钟周期期间产生时间戳的事件处理电路，扫描器还包括一个比较每个时钟周期内的时间戳的重合检测器 以识别符合事件，所述方法包括以下步骤：对于连续主时钟周期，识别包括与第二主周期相邻的第一主周期的一部分的重叠周期，添加在重叠期间发生的重叠周期 周期到第二主周期以产生扩展周期，识别在第一主周期中的重叠周期期间发生的重叠事件，将重叠事件复制到扩展的第二周期中的重叠周期，并执行 扩展周期中的事件来识别符合事件对
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公开(公告)号：US08907290B2
公开(公告)日：2014-12-09
申请号：US13492439
申请日：2012-06-08
申请人： Chang Lyong Kim , David Leo McDaniel , James Lindgren Malaney , William Todd Peterson , Vi-Hoa Tran , Ashwin Ashok Wagadarikar
发明人： Chang Lyong Kim , David Leo McDaniel , James Lindgren Malaney , William Todd Peterson , Vi-Hoa Tran , Ashwin Ashok Wagadarikar
IPC分类号： G01T1/24
摘要： A method for gain calibration of a gamma ray detector includes measuring signals generated by one or more light sensors of a gamma ray detector, generating one or more derived curves using the measured signals as a function of bias voltage and identifying a transition point in the one or more derived curves. The method also includes determining a breakdown voltage of the one or more light sensors using the identified transition point and setting a bias of the one or more light sensors based on the determined breakdown voltage.
摘要翻译： 用于γ射线检测器的增益校准的方法包括测量由伽马射线检测器的一个或多个光传感器产生的信号，使用测量的信号作为偏置电压的函数产生一个或多个导出曲线，并且识别一个转换点 或更多的派生曲线。 该方法还包括使用所识别的转变点确定一个或多个光传感器的击穿电压，并且基于所确定的击穿电压来设置一个或多个光传感器的偏置。
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