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公开(公告)号：US08933409B2
公开(公告)日：2015-01-13
申请号：US13549638
申请日：2012-07-16
IPC分类号： G01T1/29
CPC分类号： G01T1/2985 , A61B6/037
摘要： A method (70) of operation of a PET scanner (10) that determines the depth of interaction of the annihilation photons within the scintillator (32) in localizing a temporal photon pair along a line of response (LOR).
摘要翻译： PET扫描器（10）的操作方法（70），其确定沿着响应线（LOR）定位时间光子对的闪烁体（32）内的湮灭光子的相互作用的深度。
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2.发明申请Method for Energy Calculation and Pileup Determination for Continuously Sampled Nuclear Pulse Processing 有权用于连续采样核脉冲处理的能量计算和堆积测定方法公开(公告)号：US20090074281A1
公开(公告)日：2009-03-19
申请号：US12210464
申请日：2008-09-15
IPC分类号： G06K9/00
CPC分类号： A61B6/032 , A61B6/037 , A61B6/5235 , A61B2503/40 , G01T1/1644
摘要： A method for processing events in a medical imaging device may comprise the steps of receiving analog signals from at least one PMT into an Applied Specific Integrated Circuit (ASIC) comprising a Constant Fraction Discriminator (CFD) and transmitting analog outputs from the ASIC. Further, sampling the analog outputs continuously using an Analog to Digital Converter (ADC) and transmitting digital outputs; and collecting a number of samples of the digital output during a sampling period using a Field Programmable Gate Array (FPGA) when triggered by the CFD. The method may additionally determine the energy of the analog signals from the at lease one PMT by subtracting the peak value of each signal from the baseline value of each signal, wherein the peak value is determined as an average of at least one sample taken only around the peak during the sampling period, and the baseline value is determined as an average of at least one sample taken only around the beginning or end of the sampling period.
摘要翻译： 用于在医疗成像设备中处理事件的方法可以包括以下步骤：从至少一个PMT接收模拟信号到包括恒定分数鉴别器（CFD）并且从ASIC传输模拟输出的应用专用集成电路（ASIC）。 此外，使用模数转换器（ADC）连续采样模拟输出并传输数字输出; 以及当由CFD触发时，使用现场可编程门阵列（FPGA）在采样周期期间收集数字输出的多个样本。 该方法可以通过从每个信号的基线值减去每个信号的峰值来另外确定来自至少一个PMT的模拟信号的能量，其中该峰值被确定为仅在周围采集的至少一个采样的平均值 在采样期间的峰值，并且基线值被确定为仅在采样周期的开始或结束周围取得的至少一个采样的平均值。
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3.发明授权公开(公告)号：US07759648B2
公开(公告)日：2010-07-20
申请号：US12209411
申请日：2008-09-12
CPC分类号： G21K1/025
摘要： A grid suitable for being positioned and held in relation to a detector has positive positioning means and at least one magnet for holding the grid.
摘要翻译： 适于相对于检测器定位和保持的格栅具有正定位装置和用于保持格栅的至少一个磁体。
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4.发明授权公开(公告)号：US08340377B2
公开(公告)日：2012-12-25
申请号：US12210464
申请日：2008-09-15
IPC分类号： G06K9/00
CPC分类号： A61B6/032 , A61B6/037 , A61B6/5235 , A61B2503/40 , G01T1/1644
摘要： A method for processing events in a medical imaging device may comprise the steps of receiving analog signals from at least one PMT into an Applied Specific Integrated Circuit (ASIC) comprising a Constant Fraction Discriminator (CFD) and transmitting analog outputs from the ASIC. Further, sampling the analog outputs continuously using an Analog to Digital Converter (ADC) and transmitting digital outputs; and collecting a number of samples of the digital output during a sampling period using a Field Programmable Gate Array (FPGA) when triggered by the CFD. The method may additionally determine the energy of the analog signals from the at lease one PMT by subtracting the peak value of each signal from the baseline value of each signal, wherein the peak value is determined as an average of at least one sample taken only around the peak during the sampling period, and the baseline value is determined as an average of at least one sample taken only around the beginning or end of the sampling period.
摘要翻译： 用于在医疗成像设备中处理事件的方法可以包括以下步骤：从至少一个PMT接收模拟信号到包括恒定分数鉴别器（CFD）并且从ASIC传输模拟输出的应用专用集成电路（ASIC）。 此外，使用模数转换器（ADC）连续采样模拟输出并传输数字输出; 以及当由CFD触发时，使用现场可编程门阵列（FPGA）在采样周期期间收集数字输出的多个样本。 该方法可以通过从每个信号的基线值减去每个信号的峰值来另外确定来自至少一个PMT的模拟信号的能量，其中该峰值被确定为仅在周围采集的至少一个采样的平均值 在采样期间的峰值，并且基线值被确定为仅在采样周期的开始或结束周围取得的至少一个采样的平均值。
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5.发明申请公开(公告)号：US20090072149A1
公开(公告)日：2009-03-19
申请号：US12209411
申请日：2008-09-12
CPC分类号： G21K1/025
摘要： A grid suitable for being positioned and held in relation to a detector has positive positioning means and at least one magnet for holding the grid.
摘要翻译： 适于相对于检测器定位和保持的格栅具有正定位装置和用于保持格栅的至少一个磁体。
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公开(公告)号：US20130020487A1
公开(公告)日：2013-01-24
申请号：US13549638
申请日：2012-07-16
IPC分类号： G01T1/164
CPC分类号： G01T1/2985 , A61B6/037
摘要： A method (70) of operation of a PET scanner (10) that determines the depth of interaction of the annihilation photons within the scintillator (32) in localizing a temporal photon pair along a line of response (LOR).
摘要翻译： PET扫描器（10）的操作方法（70），其确定沿着响应线（LOR）定位时间光子对的闪烁体（32）内的湮灭光子的相互作用的深度。
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7.发明申请公开(公告)号：US20100080339A1
公开(公告)日：2010-04-01
申请号：US12568339
申请日：2009-09-28
申请人： Derek W. Austin , Mu Chen , Bing Feng , Robert A. Mintzer , Anne Smith
发明人： Derek W. Austin , Mu Chen , Bing Feng , Robert A. Mintzer , Anne Smith
CPC分类号： G06T11/006 , G06T2211/424 , G21K2207/00
摘要： A system and method for reconstructing single photon emission computed tomography data acquired with a pinhole collimator includes sub-dividing each voxel in the imaging target object space into sub-voxels and sub-dividing each of the detector bins in the gamma camera detector into sub-bins, connecting the centers of each of the sub-voxels to each of the detector sub-bins through a pinhole provided in the pinhole collimator by ray tracing and for each ray connecting the centers of each of the sub-voxels to each of the detector sub-bins, the transmission probability is calculated by analytically solving the intersections between the ray and the pinhole surfaces. Then, a geometric-response-function of the pinhole collimator is computed which is then convolved with the intrinsic-response-function of the detector to obtain the PSF.
摘要翻译： 用于重构用针孔准直器获取的单光子发射计算机断层摄影数据的系统和方法包括将成像目标对象空间中的每个体素划分成子体素，并且将伽马相机检测器中的每个检测器区块分割成子像素， 将每个子体素的中心连接到每个检测器子箱中，通过通过光线跟踪设置在针孔准直器中的针孔，以及将每个子体素的中心连接到每个检测器的每个射线 通过解析光线和针孔表面之间的交点来计算传输概率。 然后，计算针孔准直仪的几何响应函数，然后将其与检测器的内在响应函数进行卷积以获得PSF。
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8.发明授权公开(公告)号：US08389943B2
公开(公告)日：2013-03-05
申请号：US12568339
申请日：2009-09-28
申请人： Derek W. Austin , Mu Chen , Bing Feng , Robert A. Mintzer , Anne M. Smith
发明人： Derek W. Austin , Mu Chen , Bing Feng , Robert A. Mintzer , Anne M. Smith
CPC分类号： G06T11/006 , G06T2211/424 , G21K2207/00
摘要： A system and method for reconstructing single photon emission computed tomography data acquired with a pinhole collimator includes sub-dividing each voxel in the imaging target object space into sub-voxels and sub-dividing each of the detector bins in the gamma camera detector into sub-bins, connecting the centers of each of the sub-voxels to each of the detector sub-bins through a pinhole provided in the pinhole collimator by ray tracing and for each ray connecting the centers of each of the sub-voxels to each of the detector sub-bins, the transmission probability is calculated by analytically solving the intersections between the ray and the pinhole surfaces. Then, a geometric-response-function of the pinhole collimator is computed which is then convolved with the intrinsic-response-function of the detector to obtain the PSF.
摘要翻译： 用于重构用针孔准直器获取的单光子发射计算机断层摄影数据的系统和方法包括将成像目标对象空间中的每个体素划分成子体素，并且将伽马相机检测器中的每个检测器区块分割成子像素， 将每个子体素的中心连接到每个检测器子箱中，通过通过光线跟踪设置在针孔准直器中的针孔，以及将每个子体素的中心连接到每个检测器的每个射线 通过解析光线和针孔表面之间的交点来计算传输概率。 然后，计算针孔准直仪的几何响应函数，然后将其与检测器的内在响应函数进行卷积以获得PSF。
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